apachehvac user guide - iesve

JURONG Consultant’s GMPro -

User Guide

Powered by the IES Virtual Environment

GM-Pro Navigator for Green Mark® assessments - Singapore 1

Contents

1 Assessment of Green Mark® - Singapore ................................................ 6

1.1 Green Mark® Navigator Introduction ...................................................................................6

1.2 VE Interface Elements Introduction ......................................................................................7

2 Setup .................................................................................................... 9

2.1 Workflow concept ...............................................................................................................9

2.2 Location / weather file .........................................................................................................9

2.3 Import baseline files .......................................................................................................... 10

2.4 Building Geometry ............................................................................................................. 10

2.4.1 Enter modelling mode ............................................................................................................................... 11

2.4.2 Settings ...................................................................................................................................................... 11

2.4.3 Input Options ............................................................................................................................................. 12

2.5 Site Obstructions and Shading............................................................................................ 14

2.5.1 Set selected zones to obstructions ............................................................................................................ 14

2.6 Building Orientation .......................................................................................................... 15

2.7 Room grouping (GM) ......................................................................................................... 16

2.8 Verify Suitability for Green Mark Assessment..................................................................... 17

3 Thermal envelope ............................................................................... 18

3.1 Create constructions .......................................................................................................... 18

3.2 Assign constructions .......................................................................................................... 20

4 Ap Systems ......................................................................................... 21

4.1 Ventilation approach (CMM) .............................................................................................. 21

4.2 Hot water systems ............................................................................................................. 22

5 Activities ............................................................................................. 23

5.1 Open Template Manager to set up templates .................................................................... 23

5.2 Import templates ............................................................................................................... 23

5.3 Create model templates:.................................................................................................... 24

5.3.1 Set building type and Set room type ......................................................................................................... 24

5.3.2 Receptacle, People and Lighting loads ...................................................................................................... 24

5.3.3 Other end uses ........................................................................................................................................... 24

6 Natvent designs .................................................................................. 26


6.1 Set up MacroFlo opening types .......................................................................................... 26

6.2 Assign types to windows / doors ........................................................................................ 26

7 ApHVAC systems ................................................................................. 27

7.1 Import system prototypes .................................................................................................. 27

7.1.1 Enter HVAC mode ...................................................................................................................................... 27

7.2 Name systems ................................................................................................................... 27

7.3 Assign spaces ..................................................................................................................... 28

7.4 Edit boilers / chillers / heat recovery devices / fans ............................................................ 28

7.5 System schedules ............................................................................................................... 28

7.6 Plant sizing (option): .......................................................................................................... 29

7.6.1 Room Load Calculations ............................................................................................................................. 29

7.6.2 Assign Room Sizing Data ............................................................................................................................ 29

7.6.3 System Load Calculations .......................................................................................................................... 29

7.6.4 Update fan and coil sizing data .................................................................................................................. 29

7.7 Configure fan pressure drops ............................................................................................. 29

7.8 Validate proxy ApSystems against ApHVAC ........................................................................ 29

8 Renewables ........................................................................................ 31

8.1 Open dialog (PVs and Wind) ............................................................................................... 31

8.2 Solar thermal ..................................................................................................................... 31

9 Compliance models ............................................................................. 32

9.1 Enter GM compliance mode ............................................................................................... 32

9.2 Proposed model: ............................................................................................................... 32

9.2.1 Create/refresh proposed model from real model ..................................................................................... 32

9.2.2 Edit substitutions: ...................................................................................................................................... 33

9.2.3 Pre-requisite checks:.................................................................................................................................. 33

9.2.4 Create proposed systems .......................................................................................................................... 33

9.2.5 Plant sizing (option): .................................................................................................................................. 34

9.3 Reference model: .............................................................................................................. 34

9.3.1 Create/refresh reference model from proposed model............................................................................ 34

9.3.2 Pre-requisites: ............................................................................................................................................ 34

9.3.3 Create baseline systems: ........................................................................................................................... 35

10 Simulation ............................................................................. 37

10.1 Pre-simulations: ................................................................................................................. 37

10.1.1 Solar ........................................................................................................................................................... 37

10.1.2 Daylight (option) ........................................................................................................................................ 37


10.2 Thermal simulations: ......................................................................................................... 37

10.2.1 Settings ...................................................................................................................................................... 37

10.2.2 Simulate compliance models ..................................................................................................................... 37

11 Part 0 - model ........................................................................ 39

11.1 Customise report logo ........................................................................................................ 39

11.2 Point Score card ................................................................................................................. 39

11.3 Point summary .................................................................................................................. 39

11.4 Cost details / Energy results ............................................................................................... 39

12 Part 1 - energy eff. A .............................................................. 41

12.1 ETTV NRB 1-1 ..................................................................................................................... 41

12.2 Air-con system NRB 1-2 ...................................................................................................... 41

13 Part 1 - energy eff. B .............................................................. 42

13.1 Envelope NRB 1-3 .............................................................................................................. 42

13.2 Natvent / mech-vent NRB 1-4 ............................................................................................ 42

13.3 Day light NRB 1-5 ............................................................................................................... 43

13.3.1 Edit Spaces ................................................................................................................................................. 43

13.3.2 Edit Tvis ...................................................................................................................................................... 43

13.3.3 Edit Preferences ......................................................................................................................................... 43

13.3.4 Choose simple/advanced & simulate ........................................................................................................ 44

14 Part 1 - energy eff. C .............................................................. 45

14.1 Artificial lighting NRB 1-6 ................................................................................................... 45

14.1.1 Edit spaces ................................................................................................................................................. 45

14.1.2 Report ........................................................................................................................................................ 45

14.1.3 Exterior lighting ......................................................................................................................................... 45

14.2 Car Park Ventilation NRB 1-7 .............................................................................................. 46

14.2.1 Check room activities set ........................................................................................................................... 46

14.2.2 Report ........................................................................................................................................................ 46

14.3 Common Area Ventilation NRB 1-8 .................................................................................... 46

14.3.1 Check room activities set ........................................................................................................................... 46

14.3.2 Report ........................................................................................................................................................ 46

14.4 Lifts NRB 1-9 ...................................................................................................................... 46

14.4.1 Check lift data ............................................................................................................................................ 46

14.4.2 Report ........................................................................................................................................................ 47

14.5 Energy eff. features NRB 1-10 ............................................................................................ 47

14.5.1 Green walls ................................................................................................................................................ 47


14.5.2 Energy eff. features ................................................................................................................................... 47

14.5.3 Report ........................................................................................................................................................ 47

14.6 Renewables NRB 1-11 ........................................................................................................ 47

14.6.1 Tenant details ............................................................................................................................................ 47

14.6.2 Report ........................................................................................................................................................ 47

15 Part 2 - water efficiency ......................................................... 48

15.1 Water Efficient Fittings (NRB 2-1) ....................................................................................... 48

15.1.1 Edit Appliance Data.................................................................................................................................... 48

15.1.2 Report ........................................................................................................................................................ 48

16 Part 4 - Indoor Environment Quality ....................................... 49

16.1 Thermal Comfort (NRB 4-1) ................................................................................................ 49

16.1.1 Report ........................................................................................................................................................ 49

17 Appendices ............................................................................ 50

17.1 Appendix A ........................................................................................................................ 50

17.1.1 Weather data ............................................................................................................................................. 50

17.1.2 Model data................................................................................................................................................. 50

17.2 Appendix B: ETTV details ................................................................................................... 50

17.3 Appendix C ........................................................................................................................ 50

17.3.1 Report Data ................................................................................................................................................ 50

17.3.2 Appendix C: GMIS submission form........................................................................................................... 50

17.4 Project Details/Summary ................................................................................................... 51

17.4.1 User details ................................................................................................................................................ 51

17.4.2 Project details ............................................................................................................................................ 51

18 ANNEX ................................................................................... 52


Green Mark® - Singapore navigator


1 Assessment of Green Mark® - Singapore

1.1 Green Mark® Navigator Introduction

Step-by-step analysis workflows – GM-Pro’s complete workflow environment is driven by “step-by-step” smart navigation that opens wide the power of IES analysis. A series of Navigator steps guide users through a range of tasks; from modelling the building, to energy analysis, to individual credit interrogation and report creation.

The GM-Pro Navigator establishes a ‘workflow concept’ to guide the user through the Green Mark® assessment process. It particularly targets the BCA Green Mark® Energy credits in the BCA Green Mark Certification Standard v.4 for New Non-Residential Buildings.

Detailed reports and modelling outputs are aimed at providing insight into building performance above and beyond the credit calculation requirements.

A range of individual software modules and features are available within the VE-Pro suite, which are used to construct a detailed model for Green Mark® assessment usage. The navigator allows switching between modules and provides guidance on which module is appropriate to use for the required functionality. It is beneficial to familiarize yourself with the specific capabilities of each module and their corresponding User Interface (UI) elements.

The GM-Pro Navigator is a tool which brings all of the individual VE-Pro modules and features together in a single area and presents the user with step-by-step smart navigation and management of the compliance workflow and analysis process. The Navigator is driven through the successful execution of specific actions and commands which are activated by the user in a defined sequence. Some of the actions in the navigator will trigger functionality within VE-Pro, whilst other steps are for guidance or to remind the user to check a number of assumptions and pre-requisites.

This smart navigation leads the user through the process of basic geometry creation, to constructions/thermal data assignment, and ultimately to the automatic generation of a full set of simulation results and credit analysis reports.


The Navigator also provides the user with predefined prototypical Singapore data which can be used to populate the model with default baseline information, location-appropriate constructions, and prototype HVAC networks.

The main structure of the GM-Pro Navigator workflow includes the following steps:

1. Preliminary Data setup

2. Model Geometry / Zone Creation

3. Envelope Thermo/Physical Properties

4. DHW / Ventilation strategy

5. Zone Configuration

6. Ventilation Setup / HVAC systems

7. Energy Saving Measures

8. Generate Proposed / Baseline models

9. Simulations

10. Analysis / Results

1.2 VE Interface Elements Introduction

The Main User Interface Toolbar and Menu sit at the top of the product interface. The Navigator window sits to the left of the interface, below the main toolbar. Below the Navigator is the (Room) Browser area. The Browser content will change depending on the currently active VE-Pro module. Both the Browser and Navigator display can be toggled on/off with controls on the Main Toolbar. The right hand side of the interface contains the display of the currently active VE-Pro module. Most modules will also contain their own module-specific toolbar(s).

The Navigator functions as a series of hyperlinks that are accessed within the smart navigator tree structure that is located on the upper left side of the interface. The hyperlinks take the user to the relevant VE-Pro module and / or dialog box to complete the tasks associated with that topic. When multiple Navigators are available, a drop-down selector at the top of the Navigator area allows changing between Navigators.

Note: you can increase the size (vertically and horizontally) of this area by dragging the borders between the workflows area and its surrounding areas.


Each task line in the navigator will have up to three buttons shown to the right:

- ? – provides a link to ‘help files’ directly related to that task line

- Notes icon – when selected a ‘notes field’ will appear below, which allows the user to input specific notes related to that task for documentation purposes or to share with other team members

- Check box – provides users the ability to select and ‘check’ that task as complete. This can be important for personal or team tracking on a large or complex project.

Some Navigator entries can be collapsed / expanded to show a number of sub-actions. These lines contain a circle on the left which can be clicked.

Some Navigator entries are dependent on previous actions having been completed. These actions will remain greyed out until the pre-requisites have been checked as completed.

Small icons at the top of the Navigator display allow the Navigator to be printed or copied to the clipboard. These print-outs or copies will contain the Notes information and checkmark information, allowing convenient project tracking.

If a Navigator entry results in a VE action or module change, the mouse cursor will change shape when it is positioned over the navigator entry, and the navigator line will turn blue. Other navigator entries serve as reminders / prompts, and the cursor will not change when hovering over these items. These items will not launch actions when clicked, but can be used to check actions or record notes.

Most modules within VE-Pro have their own User Guide, which can be accessed from the Help -> User Guides menu entry. The following modules will be used in the GM-Pro Navigator:

ModelIT [default starting view] – Used to draw or import Model Geometry, defining zones, windows, etc.

Singapore Compliance – used to configure model / zone activities, room types, initiate simulations etc.

ApacheHVAC – used to configure the HVAC network


2 Setup

2.1 Workflow concept

The GM-Pro Navigator assists the user through the Green Mark® validation process. It aims to assist the user with automated steps and reminders throughout their project. The general workflow centred around the navigator involves the following steps: 1. Model, configure, and analyse the Real Model (also sometimes referred to as the Actual model). This

is the building as designed and as it will be constructed. All actions up to the Compliance models section is aimed at developing the Real Model.

2. When satisfied with the Real Model, the Compliance models section of the navigator assists with the construction of the Proposed and Reference model variants. The Proposed model is based on the real model, whereas the Reference (or Baseline) model is based on the same geometry, but is customised as per Green Mark baseline requirements.

3. The Simulation workflow steps will analyse and compare the Proposed and Reference models. 4. Part 0, Part 1 and the Appendices workflow sections assist with the credit data for the Proposed (and,

where appropriate, Reference) models.

2.2 Location / weather file

Selecting this item launches the ApLocate sub-program, from which the user sets the location of the model, external design conditions, and the appropriate weather data.

In the dialog shown by the navigator action, use the “Selection Wizard…” to walk through the required steps. Ensure that the resulting weather file derived from the location is appropriate for Singapore. Note that Singapore can be found in the Australasia/Pacific region within ApLocate.

Public Holidays may also be defined in the ApLocate sub-program, in the dedicated tab sitting on the right hand side of the window.


2.3 Import baseline files

This command imports a selection of Singapore / Green Mark® baseline data. This data is required for a number of Green Mark actions, but also provide the user with a convenient selection of data from which to derive their own settings.

Upon selecting this item, the user is prompted to select the appropriate Baseline file data set. The appropriate location is pre-configured. The user should open the “GreenMark.mit” data file.

Once the file is loaded, a selection of baseline data is imported. This includes Green Mark® appropriate profiles for Internal Loads (Lighting, Equipment) and Occupancy. The Construction Database (CDB) will also

be seeded with a number of constructions and materials appropriate for the Singapore location. Default HVAC and ApacheSystems data is loaded, ready for user customization.

At some instances, this item must be checked as completed to unlock further actions in the Navigator. Unlocked steps of the Navigator are greyed out, and cannot be clicked on. This will mean that a previous compulsory step has not been performed before, and that the associated box needs to be ticked.

Example: early in the workflow, the models have to be imported to be able to continue with the process.

2.4 Building Geometry

This section of the navigator allows the creation of the building model using the ModelIT module in the <Virtual Environment>.

Please see the appropriate modelling user guides in the Help section for more information on ModelIT.

Additional guidance is also available using the Navigators in the Geometry section of the Navigator selection drop-down.


At this stage, several templates can be defined for thermal conditions, materials, general parameters for the building. It is advised that before starting the geometry construction, the templates related to lettable/common spaces areas are chosen and assigned during the construction of the model. This information will be used for the automatic computation of the EEI of the building.

2.4.1 Enter modelling mode

This navigator action switches the current active module to ModelIT, which is the <Virtual Environment> building creation module. Each time it is necessary to amend the model and its geometry, this link will allow to switch back to the building creation module.

2.4.2 Settings

2.4.2.1 Locks

Locks allow the user to snap the drawing tool to various items in the model view window such as model endpoint, midpoint, grid, etc. When creating model geometry it is useful to have the lock window open so you can switch different locks on and off depending on the particular modelling task you are trying to perform.

2.4.2.2 Grid

Snapping to the grid when building model geometry ensures the creation of an accurate compact model which enhances accuracy and performance later in the analysis. This option allows the distance between grid points to be set - in both the x and y direction. Checking the grid box in the locks menu will force the drawing tool to snap to the grid. In general it is recommended to use a grid separation distance of 4 inches (0.1m).

2.4.2.3 Inner volumes

This option allows you to add or remove inner volumes from your model.


Inner volumes are used to take account of the thickness of walls, ceilings and floors. The thickness of the walls will be defined later in the Apache Constructions Database. The thickness of the wall is represented in the model by a grey line which is offset into the room by the thickness of the wall. Inner volumes are only suitable for use in models with relatively simple geometry. Note that when using the option of inner volume, the area associated to the thickness of the walls will not be accounted for as part of the area of the room in question. Inner volumes will then give the Net area of the building rooms, whereas no inner volume will give in aggregate the GFA of the building; according to the value desired by the user, this can be of importance to take in account before starting the construction of the model.

2.4.2.4 Adjacency separation distance

This command opens the model settings window. Adjacency separation distance defines the maximum distance that two surfaces can be away from each other, while still being recognized by the software as being adjacent.

This setting is particularly important when modelling a building using thick-wall configuration, as placing two walls further apart than the adjacency separation distance means they will not be considered adjacent, and hence are likely to become external rather than internal walls. Alternative, if set too wide, it can cause two adjoining external walls to be seen as adjacent and hence modelled as an internal wall.

The default value is set at 0.10m, which is an appropriate value for most typical cases.

2.4.3 Input Options

Zoning

Zoning is of critical importance to the model. Too many zones and the model becomes over complex, too few and detail is lost. Although the main focus should be on capturing core functional spaces e.g. offices in commercial buildings or living rooms, bedrooms etc. in residential buildings - it is also necessary to capture the area/volume of other miscellaneous/ancillary spaces such as elevator shafts, toilets, stairs etc.

The single most important aspect to note in relation to these space types is that they do not have to be represented exactly and individually to effectively convey the energy consumption of the building. In other words it is not necessary to model each and every space separately but instead zones can be outlined around each of these space types that capture all of a space type together.

Each zone should represent a single activity or zone purpose. During the configuration of the Proposed model, you will be assigning a room type (or activity) to each zone. You can also do this during the Real model phase using the Building Template Manager, Building Regulations grid:


2.4.3.1 Manually Extrude Rooms / Zones

Click the ‘draw extruded shape’ button and the ‘shape settings’ window will open. Set the height of the room and what plane the room sits on. You can name the room here or you can choose to name the room later by right clicking on it in the room list in the side bar. Draw the outline of a room by clicking on points in the model view window to define the room vertices. It is important to snap to the grid.

2.4.3.2 Import DXF & Manually Extrude

When importing a .dxf it is important to select the correct scale factor. The drawing will appear in grey in the model view window and will sit behind the model. Use this to as a guide in which to trace your rooms over while snapping to the grid at all times.

2.4.3.3 Import GBXML (Revit, ArchiCAD etc.)

This hyperlink offers an alternative to manually building a model within the <VE> ModelIT module. It allows a .GBXML file to be imported from another CAD platform such as ArchiCAD, Revit or other.

2.4.3.4 Model Settings

The model setting window allows you to change the adjacency separation distance, vertical-horizontal element transition angle and perform model checks.


Vertical-Horizontal Element Transition angle define at what angle a wall becomes a ceiling or a floor. By default, if a surface is at an angle less than 60° it is recognized by the software as a ceiling or floor.

For Green Mark, it is recommended to set this to a value of 70° to comply with ETTV calculation tables.

The model check option allows you to perform a check on the quality/integrity of the geometry in your model. Check the boxes for intersections and surfaces and click the check button. A text file will be created which will flag up any error in your model geometry. It is recommended to perform model check regularly throughout the model building process. It is usually far easier to fix a geometry problem soon after it occurs rather than at the end.

Clicking the rebuild button refreshes all the adjacencies in the model.

2.5 Site Obstructions and Shading

The <VE> contains powerful solar analysis capabilities, including ETTV analysis using simulated solar and shadow projection data. This section of the navigator prompts the user to create both local (on-building) shading devices as well as surrounding external shading objects. Only local external shades will be used in the ETTV calculation for the proposed building. Topographical shades/Adjacent buildings will be taken in account as for the shadows they cast on the building, but only for the energy modelling results (if chosen by the user; this choice will need to be justified to the assessor during the energy modelling assessment); they will not be taken in account in the ETTV computation.

2.5.1 Set selected zones to obstructions

Select all appropriate zones that you wish to configure as obstructions prior to selecting this action.

This Navigator action shows a dialog which changes the selected zones to one of the following room types:

Room

Adjacent Building

Topographical Shade

Local Shade


Local shades are shades associated to the building itself. They will be taken in account for the proposed building ETTV computation, as well as energy modelling for the proposed model; however, they will be removed from the reference building ETTV computation as well as energy modelling for the reference model.

As for topographical shades, or adjacent buildings, they will not be accounted for in the ETTV calculation, for both the proposed and reference building. However, there impact on the building energy consumption will be taken in account in both the proposed and reference model (if chosen by the user).

It is then advised to think carefully while selecting a shade as either a local shade or a topographical shade/Adjacent building.

2.6 Building Orientation

This option allows the orientation of the building to be set. The arrow points in the direction of North and adjusts when a value is entered on the input line (default position = pointing straight up). A corresponding North-pointing arrow is always visible on the Main Toolbar.

Example: for the following model, the façade of the building indicated in the model is oriented towards North-East.


2.7 Room grouping (GM)

An optional step in the Navigator, but recommended for working with larger models and for HVAC.

The Room browser below the navigator allows the grouping of rooms in categories. These categories can be created manually, or various pre-configured categories can be selected using the ‘Room Group Creator…’ entry in the main <VE> menu bar.

Using the first icon (circled in red in the caption on the left) in the Room Browser window you can add and remove room

schemes, and control the grouping within each scheme. Using the second button (circled in blue in the caption on the left), you can assign the currently selected zone(s) to the active scheme / group. You can switch room group schemes using the drop-down selector.

For ease of room assignment to Multiplexes in HVAC, it is recommended that rooms be grouped together in an HVAC grouping scheme. A multiplex can then be assigned to a room group, automatically associating all rooms in the room group to the multiplex.


2.8 Verify Suitability for Green Mark Assessment

Performs a basic check on the building’s suitability for Green Mark assessment, including whether building area meets the minimum size requirement for Green Mark assessment.


3 Thermal envelope

3.1 Create constructions

Selecting this Navigator action opens the ApCDB, or Construction Database, dialog:

If you have previously imported the Green Mark baseline files, a number of constructions will be shown which are targeted at the Singapore / Green Mark environment. It is also possible to create new constructions, or modify existing ones to suit the material selection for the current project.

It is also possible to manually import constructions from the System Construction database that ships with the <VE>. This database can be opened using the View -> System Constructions menu entry. Right-click the required construction and select “Copy Construction”. This will copy the system construction into the project.

Edit an existing project construction by double-clicking the line you wish to edit. You can change the layers of a construction, as well as the materials (and material properties) for each layer.


Note that the pre-defined constructions imported with the Green Mark template are not editable directly. You will simply need to select it and copy it as a new construction, then the copied version will be editable.


3.2 Assign constructions

This navigator command shows the Assign Constructions dialog, which allows the assignment of CDB constructions to the currently selected zones. It is therefore required that the required zones are selected prior to invoking this command.

Within the Assign Constructions dialog, select the category you wish to assign in the top list, select the construction to replace in the middle list (all active instances of the construction will be shown in the model view to the left), and select the new construction to use in the bottom list. Press the Replace button to assign the new construction.

Note that it can be useful to create a Room Grouping Scheme dedicated to this assignment of constructions. It is then possible to click on the group’s name and assign the constructions to all of the rooms included in the group.

For more guidance in using the Constructions Database please see the Constructions Database user guide.


4 Ap Systems ApacheSystems are simplified Heating/Cooling systems available within the <VE>. For the Green Mark navigator, it is required to configure an ApacheSystem for DHW purposes, as well as to provide supplementary information to the ApHVAC module.

Each HVAC network / HVAC System in the model is required to have a corresponding ApSystem. An ApSystem is also required for zones that are to be mechanically or naturally ventilated.

4.1 Ventilation approach (CMM)

This Navigator action opens the Apache Systems dialog. Any number of Apache Systems may be defined using the Add / Remove buttons at the top of the dialog.

An Apache System is named using the Name edit field. To assign the new name, re-select the system you are naming, and the new name is automatically applied.

The name of an Apache System should be of the following form:

<prefix>=<description>, where

<prefix> is a short combination of letters or numbers which should also be added to the start of the description of the matching (paired) HVAC network. (See section 7.2, naming HVAC systems)

= is an equals sign

<description> is a description of the Heating/Cooling system

For each Apache System, the cooling/ventilation strategy must be configured in the “Cooling” tab. This setting determines whether a room is considered conditioned, mechanically ventilated, or naturally ventilated, and thus evaluated in the relevant credit analysis.


4.2 Hot water systems

This step uses the same table as the previous one. The Hot water systems can be configured for each of the systems defined earlier in the “Hot water” tab.


5 Activities This section of the navigator covers the use of the Building Template Manager (BTM). A full user guide on the Building Template Manager is available from the Help -> User Guides.

Icon of the Building Template Manager:

Building Templates are not mandatory, but can save significant time by applying a large number of settings to a number of rooms at once. Most template settings can be overridden on a per-room basis by un-ticking the “Template” setting in the appropriate Room Data dialogs (accessed from toolbar in Singapore compliance module, Room Query button).

5.1 Open Template Manager to set up templates

This link opens up the Building Template Manager (there is a corresponding button on the Main Toolbar). You can create new templates from scratch, or copy/modify existing templates. Once you have created the Proposed Building (and assigned some room activities), the list of Templates will be extended with Green Mark regulation templates, which cannot be modified, but can be used as a starting point for deriving your own templates from.

Once you have created a Template, it can be assigned to the currently selected zones within GM Compliance Mode (Singapore compliance module) using the appropriate toolbar icon:

5.2 Import templates

Templates can be imported from other projects. After import they can be customized or used as they are.


5.3 Create model templates:

5.3.1 Set building type and Set room type

On the Thermal Conditions template UI (the default template type), you will find a grid where you can specify the room and building type:

Double-click a grid cell in order to select from the possible values for that cell. Once you assign a room activity / building type to a Template, assigning that Thermal template to a room automatically sets the room activity and Building Type for that room in the Proposed and Reference models. This setting can also be overridden on a per-room basis within the Singapore Compliance module.

5.3.2 Receptacle, People and Lighting loads

Within your template it is possible to set up Internal Gain loads. Most loads will operate on a Variation Profile basis. By Importing Baseline files at the start of the navigator, a number of pre-defined Profiles will be made available. Additional Profiles can be created using the “Apache Profiles Database” button in the Template Manager.

5.3.3 Other end uses

Not all end-uses can be configured in the Building Template Manager. Several loads, such as lifts / escalators, are specified as part of the credit calculation steps (in the case of lifts / escalators, for example,


the appropriate data entry is done in NRB 1-9 steps); they still need to be added to the concerned spaces of the model for energy modelling purposes.

Energy saving devices can also be defined as part of the NRB 1-10 steps.

Exterior Lighting analysis (part of NRB 1-6 navigator section) requires the internal lighting gains to be configured.


6 Natvent designs MacroFlo is a program for analysing infiltration and natural ventilation in buildings. It uses a zonal airflow model to calculate bulk air movement in and through the building, driven by wind and buoyancy induced pressures. Details of the methods used in MacroFlo may be found in the MacroFlo Calculation Methods manual. MacroFlo is invoked as an adjunct to Apache Simulation, as described in the Apache User Guide.

The preparation of MacroFlo input data in the MacroFlo view consists of setting the air flow characteristics of openings in the building (windows, doors and holes). Once these MacroFlo types have been assigned to openings, they can be included in the simulation.

A full user guide on MacroFlo is available from the Help -> User Guides.

6.1 Set up MacroFlo opening types

Opens the MacroFlo settings dialog. The different type of openings to the outside can be defined here, in terms of the operability and degree of opening of the aperture to the exterior. This will determine the effectiveness of natural ventilation of spaces.

6.2 Assign types to windows / doors

Allows the assignment of MacroFlo opening types to the model. It operates on the currently selected rooms. If no rooms have been selected, an error message is shown.

Note that a hole in a room should be modelled in the first place as a window, and then a 100% opening should be assigned to it from this step of MacroFlo itself.


7 ApHVAC systems This navigator category consists of a number of sub-categories and tasks designed to guide users through the process of setting up the actual building HVAC system.

7.1 Import system prototypes

The Green Mark baseline data provides a number of pre-defined HVAC networks which are to be used for Green Mark HVAC modelling.

7.1.1 Enter HVAC mode

This action switches the software to the ApHVAC module, loads the Actual network file (GMactual.asp), and opens the Import Prototype System dialog. The user can re-open this dialog at any time whilst in the HVAC module by clicking the “Import from library” button on the HVAC toolbar.

In the Import Systems dialog, select the Green Mark library, and identify which system is suitable for your design. Once the system type is identified select & import the system(s) on to the ApHVAC work space. A number of system loops may need to be imported depending on the system design in question. Prototype systems can be imported in a vertical or horizontal placement.

Note that systems can also be input manually from scratch. However, the auto-sizing options for the proposed and reference cases will not be available in this configuration.

7.2 Name systems

Double-click the grey title bar to name your HVAC network. The naming scheme is similar to the Ap Systems naming scheme:

<prefix>=<description>, where

<prefix> is the same prefix assigned to the corresponding Ap System.

= is an equals sign

<description> is a description of the Heating/Cooling loop.

Note that it is important that the names given in the HVAC mode to the various sytems are exactly the same as the ones given in the ventilation approach (CMM) step. A step dedicated to the checking of this proper naming will come later in the Navigator.


7.3 Assign spaces

Rooms / zones must be assigned to the HVAC networks. The easiest way to do this is through the use of room groups, which would have been created prior to switching to HVAC mode. Double clicking the Multiplex & using the “Assign from room group” icon allows groups of rooms to be assigned to the selected HVAC network.

7.4 Edit boilers / chillers / heat recovery devices / fans

Please see the HVAC user manual for further details.

7.5 System schedules

Set ApHVAC system operation schedules. Indicate the occupied and unoccupied hours and the associated heating and cooling set points. The morning start-up and after-hours operation are in relation to the occupied hours. Select the appropriate control strategy for operation using setback temperatures during the unoccupied hours. These settings will apply to all ApacheHVAC systems for this project that use the default control (HVAC HP1, HP2, CP3, CP6, etc.) profiles referenced in the prototype system controllers.

Any number of additional HVAC schedules can be created to match any building system operation schedule or set point where zones may have different requirements. This is done by entering a “Prefix” refer in the dialogue & clicking the “generate alternative schedule & set points”. For example if a prefix refer of “0823” is entered & generate is clicked a copy of the default HVAC control profiles will be created in ApPro with prefix of “0823” at the start of all control profiles.

Alternative profiles can be selected for global assignment via the “schedule & set point” dropdown at the top of the schedule dialogue, the “Apply set point & plant profiles” tick box must be activated for assignment to happen once the OK is clicked in the main dialogue. If a model uses varying operation schedules these profiles must be assigned manually to ApHVAC systems in later workflows.

Advanced schedules can also be setup via the “Configure” tab in the main dialogue this feature allows users to setup more detailed system schedules.


7.6 Plant sizing (option):

7.6.1 Room Load Calculations

This navigator step automatically opens up the ApacheLoads dialog with default information applied. The user can edit the information relating to the actual model.

As with a normal ApacheLoads run this will generate information relating to room heating and cooling loads. This information is then used to populate the default sizing sheets located in the ‘Loads Data’ folder of the project directory. This will generate flow rate data for use in the actual HVAC network.

This step must be checked as completed before the next step is unlocked.

7.6.2 Assign Room Sizing Data

This step automatically assigns the sizing data generated from the step above to the HVAC network.

7.6.3 System Load Calculations

This navigator step opens up the ApacheLoads dialog again, this time an ApacheHVAC network is assigned in order to enable a system sizing calculation. The HVAC network in the file “GMActual.asp” will be used. This will provide information to size various system elements i.e. fan and coil data.

7.6.4 Update fan and coil sizing data

This step automatically assigns the sizing data generated from the step above to the actual HVAC network.

7.7 Configure fan pressure drops

The Green Mark navigator will use the ASHRAE 90.1 fan power calculation as part of its HVAC evaluation. This navigator entry allows the entry of parameters to this calculation as per Table 6.5.3.1.1B. If no changes are required, the default values can simply be confirmed.

7.8 Validate proxy ApSystems against ApHVAC

This action will confirm that the prefixes assigned to Ap Systems and ApHVAC networks are a match and can be resolved. Please see sections Error! Reference source not found. and 7.2 for more information on naming Ap Systems and ApHVAC networks.


Also, you can refer to the Green Mark HVAC Proxies guide (see Annexes) for a more comprehensive description of the process.


8 Renewables There are three types of renewable systems available:

PVs Generator

Wind Power

Solar thermal (hot water)

See Apache Sim User Guide for more information on renewables.

8.1 Open dialog (PVs and Wind)

Opens the Renewables dialog where PV and Wind generator renewables can be specified.

The following PV (photovoltaic panels) technologies are available for simulation in the tool:

Monocrystalline silicon

Polycrystalline silicon

Amorphous silicon

Other thin films

The typical efficiencies and parameters for these different technologies are already available, allowing an early conceptual analysis. The data can then be replaced by the products parameters as provided by the manufacturers.

The orientation and inclination of the panels can be indicated, as well as other parameters, allowing the software to determine the electricity generated by the panels. The shading factor of the panel needs to be determined individually; for users of Suncast, this analysis can be conducted in this module so as to determine a precise value of this parameter.

8.2 Solar thermal

Opens the Ap Systems dialog, where the Solar water heating tab can be used to specify details of the Solar thermal system.

The complete loop parameters can be adjusted from the default values, and be replaced by manufacturer’s data for better precision of the calculations.


9 Compliance models This section of the navigator assists with the creation of the Green Mark Proposed and Reference (Baseline) model variants. It is recommended that you complete your configuration of your Actual building before starting this section to reduce the need for refreshing your Proposed and Reference buildings with changes from the Actual.

9.1 Enter GM compliance mode

This Navigator action switches the VE to the Singapore Compliance module. Within this module you can create / configure / examine your model variants (Actual, Proposed and Reference).

The toolbar at the top of the module View allows the switching between the different variants.

The section at the bottom of the view is only active when the Proposed building is the active building. When no rooms are selected, the Building Type selection drop-down allows the setting of the default building type. Any rooms not assigned a Thermal Template with a Room Activity will receive the default Activity for the selected building type. When one or more rooms are selected, the assigned Room Activity can be set for those rooms using the Building Type / Room Activity selection drop-downs.

9.2 Proposed model:

9.2.1 Create/refresh proposed model from real model

This action derives a Proposed model variant from the Actual model. The geometry of the two buildings is kept the same, but the following changes are automatically applied:

CDB internal shading devices (blinds, shades, recesses) are turned off

Construction surface resistances are checked, and any non-compliant constructions are reported to the user

The main use of having an actual model and a proposed model is to allow the user to work only on the real model before entering in a compliance mode. Once the real model (actual) is built, the user may enter in the compliance model to compare the proposed model to the baseline model. The user may want to change some of the schedules used in the actual model, to comply with the rating system’s requirements in terms of schedules, or equipment loads for example.


9.2.2 Edit substitutions:

9.2.2.1 Activities Room activities can be assigned through the interface at the bottom of the Singapore Compliance module View. See section 9.1 for more details.

9.2.2.2 Ventilation / Schedules In the Proposed model you can use the Room Query (Room Data) dialog to make changes to the building / room settings. To enter the Room Data dialog, select a room and click the Room Query icon on the Singapore Compliance View toolbar:

9.2.3 Pre-requisite checks:

9.2.3.1 SunCast simulation This runs a SunCast analysis on the proposed model. It will automatically use a design day of the 21st of every month, and run a full annual analysis, meaning the results can be re-used during simulation if desired.

9.2.3.2 ETTV & RTTV This runs an ETTV and RTTV analysis on the proposed model. A summary dialog will report the outcome of the analysis. An RTTV analysis is always calculated for your information, but is only applicable when roof glazing is used.

9.2.4 Create proposed systems

9.2.4.1 Create/refresh proposed network For the proposed HVAC network, this creates a duplicate of the network in GMActual.asp, and stores it in GMProposed.asp. Depending on model conditions, several alterations may be required for Green Mark compliance: If the total floor area of air-conditioned spaces exceeds 5000 m2, a water-cooled chilled water system should be used for the Proposed building. Chiller details (in particular, COP) should be verified against SS530. Any changes that need to be made to the network can be done by opening it in the HVAC module using the next item in the navigator.

9.2.4.2 Edit in HVAC This opens the Proposed HVAC network file in the HVAC module, ready for editing.


9.2.5 Plant sizing (option):

9.2.5.1 Room Load Calculations / Assign Room Sizing Data / System Load Calculations / Update fan and coil sizing data These perform the same steps as the sizing actions in the Actual building navigator section, but for the proposed configuration. It is not possible to select an HVAC network for the System Load Calculations, it will always use GMProposed.asp

9.2.5.2 Derive fan powers Using the data specified earlier in the Fan Pressure Drops dialog, this will update the fan data.

9.3 Reference model:

9.3.1 Create/refresh reference model from proposed model

This action derives a Reference (Baseline) model variant from the Proposed model. The geometry of the two buildings is kept the same, but the following additional changes are automatically applied:

All local shading objects are removed

Fresh air rates from Green Mark baseline templates

Baseline constructions are applied to all surfaces, with an ETTV automatically adjusted at 50W/m2.

Lighting power density adjusted for rooms baselines available in SS530.

To be able to perform this step, the building type must have been defined in the compliance view:

9.3.2 Pre-requisites:

9.3.2.1 SunCast simulation A SunCast analysis is performed on the Reference model. As the reference model may differ from the Proposed model (shading objects), a separate analysis is required.


9.3.2.2 ETTV: Iterate ETTV & RTTV An ETTV and RTTV check is performed on the baseline building. RTTV check is applied only when roof lights are present, otherwise a U-value check is performed on the roof. Reference building constructions are modified to ensure that the Reference building achieves an ETTV value of 50 W/m2. When the analysis is complete, a dialog will be shown with the final ETTV value for the Reference Building, and a dialog for either the RTTV or the outcome of the U-value check (as appropriate).

9.3.3 Create baseline systems:

9.3.3.1 Create/refresh baseline network For the reference HVAC network, this creates a duplicate of the network in GMproposed.asp, and stores it in GMReference.asp. Depending on model conditions, several alterations may be required for Green Mark compliance: If the total floor area of air-conditioned spaces exceeds 5000 m2, a water-cooled chilled water system should be selected. Chiller details (in particular, COP) should be verified against SS530. Any changes that need to be made to the network can be done by opening it in the HVAC module using the next item in the navigator.

9.3.3.2 Edit in HVAC This opens the Reference HVAC network file in the HVAC module, ready for editing.

9.3.3.3 Create & review

Chiller type

DCS option

9.3.3.4 Sizing: This section of the navigator performs the same tasks as the Proposed section, but applied to the Reference model. Again, no network selection is possible at this stage. The tonnage of the chiller, as well as the flow rates, will be different from the reference and base case; however, the required flow rates from fresh air requirements should not be changed between the two cases.

9.3.3.5 Adjust baseline systems to limits:

Pump power

Condensing water pump power

Pump drives

Cooling tower power

Air-con fan power


Mechanical Ventilation fan power

Heat recovery


10 Simulation

10.1 Pre-simulations:

10.1.1 Solar

10.1.2 Daylight (option)

If you have access to Radiance, additional daylight dimming energy savings are available using Radiance sensors.

In Radiance click on the Sensors tab, place sensors in all rooms that will have a daylight dimming control, then click the Apache button at the bottom of the screen to run the calculation. Next you want to create a new profile to control the lighting based on the sensed luminance, there is an example of this in the ApPro User Guide but the variable for sensed luminance is e1 (example formula profile might be "RAMP(e1,0,1,500,0.3)" so lights would be fully on when there is no light and gradually reduce to 30% when the sensed illuminance level 500lux is reached). Next this profile needs to be applied to the lighting internal gain (in the thermal template or room data) as the dimming profile.

When you run the apache simulation make sure the Radiance link is ticked on and you should see the effect of the dimming reducing lighting gains.

If you do not have a Radiance license, a similar effect can be achieved by approximating the Dimming Profile based on expected lighting levels, and applying the profile to the internal lighting gain. Another option is to apply a diversity factor to the lighting gain in question, where the amount of savings taken will need to be justified during assessment; as a general guideline, 10% savings is an acceptable value for a well-designed daylight sensor strategy.

10.2 Thermal simulations:

10.2.1 Settings

Ensure that the Proposed building is correctly configured, with all zones having been assigned their desired activity (including a default Building Type being set).

10.2.2 Simulate compliance models

This navigator action will bring up the Apache Simulation settings dialog. Within this dialog, various settings can be adjusted. If you select the Simulate button, the Proposed and Reference buildings will be


simulated, with the result file being prefixed with ‘gmp’ for Proposed, and ‘gmr’ for Reference building analysis.


11 Part 0 - model The remaining aspects of the Navigator will analyse the Proposed and Reference models, producing summary reports with model and simulation results. The reports are created in HTML format, but can be exported as PDF for easy sharing and submission purposes.

11.1 Customise report logo

Each report contains a logo at the top of the page. By selecting this navigator action you can select a suitable image for your reports.

11.2 Point Score card

This step allows the user to input manually the points for each of the sections of the whole Green Mark rating system. The values not calculated in the tool can then be inserted in the final score table so as to have the total updated Green Mark score for the project. It will automatically update the Point Summary table that can be directly used for submission purposes.

11.3 Point summary

This report contains a table of the Green Mark compliance checks and their corresponding point values. It also summarizes the requirements for Gold, GoldPlus and Platinum certification. It is updated with the information given at the previous step, and embedded in the tool itself.

11.4 Cost details / Energy results

The Energy report provides a basic summary of your energy end-uses, in both numerical and graphical format. This report requires a simulation to have been completed, and will allow you to select which simulation run you wish to use.

The Energy reports contain a basic cost section. The Cost Details entry allows you to specify pricing information for your different fuels.


Certain fields in the Energy report will be calculated using different steps in the Navigator. For instance, the EEI and A/C efficiency values will be calculated in NRB 1-10 and NRB 1-2 respectively.


12 Part 1 - energy eff. A

In the ‘Result’ section, the first line gives the number of points scored, already pro-rated according to the percentage of air-conditioned areas compared to the total area of the building. The second line gives the total number of points scored for this section before pro-rating it.

12.1 ETTV NRB 1-1

This step gives a summary of the ETTV calculation and generates the associated report, showing a room-by-room and façade-by-façade breakdown of ETTV contributors. The value for the proposed as well as reference model are generated in this step, and the indicative value for RTTV is given, and should be considered in case the roof has skylights.

Example: A building has an ETTV of 38W/m2, and its air-conditioned spaces represent 80% of the total area, when non air-conditioned spaces represent 20% of the total area.

The second line of the report will give 12 points (number of points scored for this credit before pro-rating).

The first line of the report will give the number of points scored for this credit after pro-rating, in this case 12*80% = 9.6 points.

12.2 Air-con system NRB 1-2

This section gives the report and details of calculation for the credit NRB 1-2. It calculates automatically the points for NRB 1-2 (a), (b) and (c). The other 4 points attributed from (d) to (g) are supposed to be validated automatically in the point report.

For the air-side fan efficiency, the CAV and VAV fans will be considered separately in relation to their respective baselines efficiencies. The points results for these two types will then be pro-rated according to the total flow of each type.

Example: A building has 6 CAV fans, 2 points are scored under this type. It also has 5 VAV fans, 4 points are scored under this type. The total flow rate for the CAV fans is 3,000L/s. The total flow rate for the VAV fans is 7,000L/s. The total points for this building under the air-side efficiency section is 2*(3,000/10,000)+4*(7,000/10,000) = 3.4 points.


13 Part 1 - energy eff. B

13.1 Envelope NRB 1-3

This credit performs automatically the calculation and report generation of the whole of section NRB 1-3 from (a) to (d), for all the non air-conditioned spaces (excluding car parks and common spaces).

The 30% effective shading of West facing windows is assessed directly in the calculation through the results of the Suncast analysis.

13.2 Natvent / mech-vent NRB 1-4

This step performs the calculation for the efficiency of MV fans and calculates the points. It also checks the North and South window openings for NV spaces. Note that for a window to count as a North or South opening, it needs to have the right orientation (+ or – 22.5 degrees), but also to be defined as openable (cf. Natvent Design section). The points between NV and MV are then area pro-rated, which is the second line points in the Results section. The first line gives those points pro-rated according to the air-conditioned/non air-conditioned areas.

Example: A building of 10,000m2 has 6,000m2 air conditioned, 3,000m2 naturally ventilated and 1,000m2 mechanically ventilated. Under NRB 1-4, 8 points were scored for the natural ventilation section part, and 3 points under the mechanical ventilation part. The total number of points for NRB 1-4 before pro-rating is 8*(3,000/4,000)+3*(1,000/4,000) = 6.75 points. After pro-rating between air-conditioned and non air-conditioned spaces, the total number of points for this section is: 6.75*(4,000/10,000) = 2.7 points. This point computation is fully automated in the report, this example is only for the user’s understanding, but no further action or such calculation is required to be performed.


13.3 Day light NRB 1-5

13.3.1 Edit Spaces

Indicate which rooms are to be analysed as part of NRB 1-5 day light evaluation. Use the right-most column to exclude rooms from analysis by checking or unchecking the checkbox. Use the room category columns to assign rooms to either primary (normally occupied areas) or secondary (common areas, car parks, etc) room types. Use the Select All to select or de-select All.

13.3.2 Edit Tvis

Edit the transmittance of visible light for the assigned glazing constructions. Also verify the RGB reflectance values for all assigned opaque and transparent constructions.

13.3.3 Edit Preferences

Configure FlucsDL options. For Green Mark analysis, the key option is the checkbox selecting between Reflectance and Transmittance sources. If checked, reflectance and transmittance values will be taken from CDB. If unchecked, reflectance values will be taken from FlucsDL instead, and transmittance values will be used from FlucsDL if 0 in CDB.


13.3.4 Choose simple/advanced & simulate

Advanced simulation includes light penetration testing, and is therefore slower. A day lighting analysis is performed using the FlucsDL module.

Once analysis is completed, a report will be created showing analysis results and applicable Green Mark credit summary.


14 Part 1 - energy eff. C

14.1 Artificial lighting NRB 1-6

14.1.1 Edit spaces

Use this Navigator entry to specify which rooms have Tenant Lighting provided or not. It is also possible to exclude rooms from analysis.

14.1.2 Report

This report computes the points associated to credit NRB 1-6. According to the rooms including or not tenant lighting or not, the savings can go up to 12 points or 5 points. For a situation where there is a combination of both cases, the number of points will be pro-rated according to the wattage for each case.

Example: 4 points are scored for the non-tenant lighting part, and 7 points for the tenant lighting part. The non-tenant lighting accounts for 10,000W and the tenant lighting 12,000W. The number of points given by the tool will be (10,000/22,0000)*4+(12,000/22,000)*7=5.64 points.

14.1.3 Exterior lighting

Use this dialog to check the power usage of exterior lighting. The first 3 columns of the grid may be edited to enter the required data. The data is automatically validated against the interior lighting load for the Proposed model (which is as Actual by default). This check is in accordance to the SS530 limits on exterior lighting. The floodlight for the façade should be lower than 5% of the proposed interior lighting power density, and the other uses (for exterior lighting) should be kept below 5W/m2.


14.2 Car Park Ventilation NRB 1-7

14.2.1 Check room activities set

Ensure that Car Park zones have the appropriate Car Park activity set.

14.2.2 Report

The report generates the number of points associated with the strategy adopted for the design of the parking. When several parkings exist in the same building, the associated points will be area pro-rated.

14.3 Common Area Ventilation NRB 1-8

14.3.1 Check room activities set

Ensure that Common Area zones have the appropriate room activity set. Common Area room activities are:

Toilet

Staircase

Corridor

Lift Lobby

Atrium

14.3.2 Report

The report computes the points associated to each of the strategies adopted for the common spaces, quantifying the number of these that are either naturally or mechanically ventilated (or a combination of both).

14.4 Lifts NRB 1-9

14.4.1 Check lift data

This dialog allows you to estimate your annual Lift & Escalator usage. Use the + and – buttons to insert and remove rows from the grids.


Once specified, this data will be included in all reports that contain a detailed end-use breakdown, such as the Part 0 energy report, NRB 1-9 Lifts & Escalator report, and NRB 1-10 Energy Efficiency Features.

14.4.2 Report

The associated report computing the number of points under this section is generated.

14.5 Energy eff. features NRB 1-10

14.5.1 Green walls

This dialog allows you to specify the intended amount of Green Shading on East and West façades.

14.5.2 Energy eff. features

Using this navigator action, you are able to specify additional (non-simulated) energy saving features. Enable each feature you intend to provide by clicking its check box, then provide the estimated annual energy savings in the appropriate field.

Every energy saving feature added here, and the associated energy savings, will need to be justified by an appropriate calculation and justification during assessment. These savings will be accounted for in the energy tabulation results, energy savings, as well as EEI computation.

14.5.3 Report


14.6 Renewables NRB 1-11

14.6.1 Tenant details

This step allows the user to indicate whether the tenant energy usage is included in the calculations of the EEI. It adjusts the points computation for the energy savings thanks to renewable energies.

14.6.2 Report



15 Part 2 - water efficiency

15.1 Water Efficient Fittings (NRB 2-1)

15.1.1 Edit Appliance Data

Use this dialog to provide details of all water consuming appliances. Use the combo box to switch between appliance categories. For each selected appliance category, use the Add Row button to add an appliance.

Edit the details of the appliance (type, nr of fixtures, WELS rating (limited to excellent, very good, good ratings), and the estimated water use per visit). If an appliance category is not used, no data needs to be entered.

For credit rating purposes, only the WELS rating (excellent and very good) of the defined fixtures is analysed. However, an additional water consumption report is provided that shows overall building water consumption based on water use per visit.

15.1.2 Report

When selecting this action, the software will request a simulation result file. This file is used to determine peak occupancy of the building.

A detailed report is shown providing Green Mark credit assessment. In addition to a credit analysis, the report also provides a detailed report showing annual water consumption per m2 (water consumption is calculated based on peak occupancy).


16 Part 4 - Indoor Environment Quality

16.1 Thermal Comfort (NRB 4-1)

16.1.1 Report

In order to run a Comfort analysis, a suitable simulation must have been run (See Simulation section above).

When the Report navigator action is selected, choose a simulation result file to be analysed. Only air-conditioned rooms are analysed.

For each applicable room, room temperature and humidity is analysed for all occupied hours. If a room temperature falls outside the range of 24 to 26 degrees Celsius, or exceeds 65% humidity, the room fails analysis. The report includes the pass/fail data of each room, as well as the design setpoints for temperature and humidity. In addition, the report shows the CO2 concentration per room.

Credits are awarded if all rooms pass analysis.


17 Appendices

17.1 Appendix A

17.1.1 Weather data

This report gives indications on the weather data used for the model, and its characteristics in terms of temperature throughout the year, humidity levels, rainfall, wind, diurnal temperature swing and other relevant information.

17.1.2 Model data

This report sums up the different characteristics of the model used for the modelling. It gives all the spaces dimensions, types of constructions and their parameters, the thermal performances for all the spaces, the internal gains, the ventilation rates, and the spaces conditions with min and max operative temperature and relative humidity (RH).

17.2 Appendix B: ETTV details

This section follows the format of submission for detailed ETTV calculation. The results are detailed façade by façade, indicating all the types of walls and glazings, with their various parameters, and the details of all applicable calculations. These are reported for the proposed model as well as the reference model.

17.3 Appendix C

17.3.1 Report Data

This section allows the user to input the different descriptions relative to the building and systems to include in the GMIS submission form.

17.3.2 Appendix C: GMIS submission form

This step creates automatically the GMIS submission form, combining automatically in the right format the results of the energy modelling and the report data inputs given by the user at the previous step.


17.4 Project Details/Summary

17.4.1 User details

17.4.2 Project details

This step creates the project’s summary, and indicates the list and order of the documents to attach and submit together with each point report.


18 ANNEX

1. Background

Apache Systems are simplified Heating/Cooling systems available within the <VE>. For the Green Mark navigator, it is required to configure Apache System for DHW purposes, as well as to specify the type of cooling which is to be used in their assigned rooms. The cooling/ventilation mechanism for an Apache system may be set to:

Air conditioning

Mechanical ventilation

Natural ventilation. For Air conditioning and Mechanical ventilation, a corresponding HVAC system must be created, and linked to the Apache System. This allows the cooling system to be modelled in detail.

2. Naming of Systems

An Apache system and an HVAC system are linked by using a common prefix in the system names. The prefix is terminated with a '=' character, without any space between the prefix and terminating character. That is: <prefix>=<description>, where

<prefix> is a short combination of letters and numbers. Using the same prefix in an Apache system and HVAC system name causes them to be linked.

= is an equals sign

<description> is a description of the system. This is not used for linking purposes so the Apache/HVAC system descriptions may differ.

Notes:

There should be a one-to-one mapping between linked Apache and HVAC systems. The Apache system is described as a proxy for the HVAC system.

The linked Apache system and HVAC system must have the same set of rooms assigned to them.

Naturally ventilated systems are not linked to an HVAC system and do not need to follow the “<prefix>=<description>” naming scheme.


3. Validation The Green Mark navigator includes an action in the “ApHVAC systems” section named “Validate proxy ApSystems against ApHVAC”. This action checks that Apache and HVAC systems which are to be linked have been named correctly. It is important to ensure that validation is successful before continuing.

4. Building geometry and grouping

4.1. Geometry

Building geometry can be created using the ModelIT module as described in the Green Mark user guide and other <VE> user guides.

4.2. Grouping


It is useful to create a grouping scheme for HVAC room assignment, with a group for each HVAC system and another group for any nat-vent rooms. This makes it easy to assign rooms to thermal templates and into HVAC network multiplexes, as described in later sections.

Use the button below the navigator or the “Room grouping (GM)” navigator action to launch the “Edit Room Groups” dialog.

Select a number of rooms and then press the button below the navigator to assign those rooms to a room group.


5. Apache Systems

5.1. Creating Apache Systems

The “Apache Systems” dialog is launched by the “Hot water systems” navigator action.

A separate Apache system must be created for each HVAC system. Other system(s) may be added for natural ventilation. All air conditioning and mechanically vented systems must be named using the naming scheme described earlier in this document. Each system must use a different prefix.


Each system must have the correct “Cooling/ventilation mechanism” setting.

5.2. Assigning systems to rooms

Each room may be assigned to three Apache systems:

System (referred to as HVAC system in the Building template manager)

Auxiliary vent system

DHW system For the purposes of Apache to HVAC system linking, only the main “System” setting is used.

5.3. Using thermal templates

The easiest way to configure the Apache system for a room is to define a thermal template which sets the Apache system and then assign rooms to the template.


Then select the appropriate room group (or select rooms manually) and use the “Assign templates to spaces” navigator action.

5.4. Individual Selection

It is also possible to override the template setting on a room-by-room basis. Enter compliance mode and select the “Real model” building.

Select a single room and use the button in the toolbar to open the “Room Data” dialog.

This is not necessary if using thermal templates, as described above.

6. HVAC systems

6.1. Importing HVAC systems

Prototype systems are imported into the current HVAC network using the “Import Systems” dialog.

This dialog is displayed when entering the ApHVAC module and can also be displayed by pressing the button on the toolbar.


6.2. Naming HVAC systems

Each HVAC system must be linked to a corresponding Apache system by following the naming scheme described in a previous section. To rename a system, double-click the grey title bar of the box which encloses the system.

Rename the system to include the same prefix as the corresponding Apache system.


6.3. Assigning rooms to HVAC systems

In the Green Mark HVAC systems, rooms are stored in a multiplex. To assign rooms to the multiplex, double-click the green title bar of the box which surrounds the multiplex.

This opens the “Edit Multiplex” dialog. The easiest way to assign rooms to a multiplex is using room groups, as described in a previous section.


Select the grouping scheme defined earlier and the appropriate room group.


In most cases, it is convenient to replace existing layers.

The dialog now shows that the rooms have been assigned to the multiplex.

Check the network using the button and then save it using the button, both available on the toolbar.

7. Validation

If Apache and HVAC systems have been defined as described above then validation should be successful. If validation fails, the error message gives an indication of the problem and can be used to make the necessary corrections. Checks to perform:

Are both Apache and HVAC systems named correctly, with no blank space between the prefix and the ‘=’ character?

Is the Cooling/ventilation mechanism setting correct for the Apache system?

Are rooms assigned to the correct Apache system? (Check the “Room Data” dialog)

apachehvac user guide - iesve

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