mini natural ventilation brochure 2014

8/12/2019 Mini Natural Ventilation Brochure 2014

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natural ventilation technical submission

N atu r a l Ve n t i l a t i o n Solutions

Contact us on: Visit our website: Email us:

0844 809 2509 www.airtherm.co.uk [email protected]

An introduction to our naturalventilation solutions for commercial,industrial and educational sectors


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Introduction to Airtherm

Airtherm Engineering Limited supply awide range of na tural ventilation andlighting systems that can be designed andinstalled to suit virtually any app lication.

We provide for the commercial, educational, industrial andprivate sectors and our products are increasingly popular inschools, hospitals, offices and industrial buildings.

Natural Ventilation and Lighting systems make use of nature'sown power source to provide interior spaces with a fresh airsupply or natural daylight illumination or both.

Buildings utilising natural ventilation or lighting systems, bytheir very nature, experience a significant reduction intraditional energy running costs.

The Airtherm Wind -iVent is a natural ventilation systemoperating on established aerodynamic principles. As air flowsaround the terminal itself, positive and negative pressure areasare generated. On the positive side air enters the louvres of theterminal and is directed down through the internal vanes intothe room below. The negative pressure on the leeward side of theterminal, induces air to leave the louvres, and stale air from theroom below rises and is expelled from the terminal. This processis aided by stack effect, i.e. as cool air enters the windward sideof the unit it descends into the room below, and the warm staleair rises in the ducts facing the leeward side providing anaturally fresh environment.

Natural Ventilation | Introduction


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Our Natural Product Range

Energy Efficient Heating, Coo ling, Ven tilation Renewablesfrom Airtherm Engineering Ltd

Airtherm Engineering Ltd only use products of the highest quality and experienced engineerswith excellence in their field. We aim to provide specifiers and contractors with completeconfidence in our service by managing projects closely, adhering to strict safety guidelines,demanding the highest quality workmanship and will continue to strengthen our business bylistening to customer feedback.

Health B enefits

By its very nature, the Wind-iVent (natural ventilator), Solar-iVent, (solar-ventilator) Passive-iVent (passive ventilator) Lite-iVent (combined wind & light ventilator) and our X-iVent (crosswall ventilation) systems all offer a natural solution to health problems commonly associated

with mechanical air conditioning units. Rather than re-circulating stale air (and possiblygerms), the natural ventilation system is continually removing stale air and replacing it with afresh supply. The system takes air from the roof level eliminating a proportion of pollution,including hazardous carbon monoxide from roadside traffic that is a common issue with lowlevel ventilation methods.

Suitable A pplications

Our natural ventilation products are suitable for many applications including schools, officesand hospitals. They are also used in private, local authority and commercial premisesincluding gymnasiums, colleges, universities, reception areas, store rooms, changing rooms,

libraries, meeting halls and are also suitable for specialist applications. They provide an idealsolution for delivering a 'fresh' air supply to areas where conventional room ventilation isdifficult due to critical noise issues.

The Ideal S olution

Our natural ventilation systems offer architects and consulting engineers not only a naturaland environmentally-friendly solution but an acoustically efficient, economical and aestheticanswer to ventilation needs.

Natural Ventilation | Product Range


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IndustrialOur flue and chimney exhaust systems are the obvious products utilisedby the industrial sector, however our line of natural ventilation andlighting systems are proving increasingly popular solutions in industrialbuildings and factories throughout the UK.Our kitchen canopy system sizes are suited to industrial applications aswell.

Leisure

Our natural ventilation and light systems are ideally suited to the leisure

sector where a fresh air supply is essential or bright illumination of largespaces is required.Our flue and chimney systems are also ideal to handle any exhaustrequirements demanded by the large boilers often used in leisure centres.Popular applications include gymnasiums, sports halls and health clubs .

Healthcare

Natural ventilation and lighting is a very popular solution in the healthcare sector in hospitals, nursing homes and other institutions. Providingfresh, breathable air and natural light for patients and health careworkers has numerous benefits to health, recovery and staffproductivity.Similarly, our kitchen canopies offer a safe, hygienic workingenvironment where food can be prepared quickly and efficiently withoutthe worry of external contamination.

Our Sectors

Natural Ventilation | Our Sectors


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Commercial

Our complete product range is ideally suited to applicationsthroughout the commercial sector. Increasingly, office buildings arebenefitting from new, greener, more efficient technologies such asnatural ventilation, natural lighting, heat pumps, solar pv and our

energy-saving air conditioning units.Our range of exhaust products, from flues and chimneys to kitchenextract canopies, are also suitable for commercial installation.

Educational

Our product range is perfect for the educational sector. We have foundschools and colleges are often keen to utilise the latest green and ecotechnology, not just to lower costs but to act as a living experiment forpupils and parents to experience.

Our natural ventilation systems are a great solution for classroomsand the daylight supply from our natural lighting products are ideallysuited for the daily periods of occupation.The growing use of heat pumps and solar pv technology to generatehot water and electricity while reducing a buildings carbon footprintare also widely employed as part of a whole building strategy.Our flue and chimney exhaust systems are also suited to thebuildings heating demands and kitchen canopies can be installedwhere on-site cooking or food preparation facilities are used.

Retail

Our efficient, high performance kitchen canopies are ideal forrestaurants and food based retail outlets where food must beprepared quickly, hygienically and safely. They are used throughoutthe industry by outlets ranging from the small to large.Our air conditioning units are, traditionally, widely used throughoutthe retail sector. Our growing range of greener, more efficient and A-rated energy products are a stylish complement to any shop or as areplacement for older, less efficient models.

Our Sectors

Natural Ventilation | Our Sectors


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Wind iVent Natural Ventilation SystemsOur natural ventilation solutions consist of two synchronizing devices: a roof-mounted naturalventilation turret and a wall-mounted unit.Louvres within these units divert external fresh air into the internal spaces creating a stackeffect which in turn removes stale air or CO from the space. Airflow, temperature and COwithin the system are monitored and controlled via pre-set sensors within a given space.

The Airtherm Wind -iVent is a natural ventilation system operating on establishedaerodynamic principles. As external wind flows around the terminal itself, positive andnegative pressure areas are generated. On the positive side air enters the louvres of theterminal and is directed down through the internal vanes into the room below. The negativepressure on the leeward side of the terminal, induces air to leave the louvres, and stale air fromthe room below rises and is expelled from the terminal. This process is aided by stack effect, i.e.as cool air enters the windward side of the unit it descends into the room below, and the warmstale air rises in the ducts facing the leeward side.

The size and type of application is virtually limitless. Additional roof-mounted turrets and wallvents can be added for larger applications and rooms can be individually monitored andcontrolled as necessary.

The features and advantages of such a system include:

A fresh air supply for workers - proven to increase productivity & reduce staff sickness

Naturally ventilated - reduce your energy costs and carbon footprint without the need for

mechanical ventilation Night time purge of stale air - creating a fresh working environment for staff the following

morning

Better control of building temperature and CO levels

Free cooling

Natural Ventilation | Wind-iVent


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Solar iVent Natural Ventilation Systems

How It W orks

The Solar-iVent system benefits of a passive stack and an active stack system, similar to our

Wind-iVent range, but with the bonus of a free power source. Our Solar-iVent terminal

delivers fresh air and discharges unwanted stale air (CO) from internal spaces, effectively

eliminating the need for traditional methods. The system incorporates a solar powered boost-

fan which provides additional 200l/s, 400l/s or 700l/s of fresh air within the compartment

below.

The photovoltaic panel collects daylight and convert this to electricity that is regulated via

the charge controller which charges the battery pack. The battery is charged whenever

there is enough available daylight to do so and even generates power on a dull day. TheSolar-iVent range have been designed to supply fresh air 24 hours a day.

The low powered fans are set as standard to simply switch on/off at maximum dampers or as

an optional feature they can be speed controlled variably in conjunction with the damper

positions.

Standard Components

12v or 24v DC Power Supply. 40w or 60w solar cell. DC carbon fibre battery Pack. Power management module. Low powered DC fan unit - 200L/s, 400L/s and 700L/s iVent control systems operate with peripheral (wind, rain,

temperature) devices to suit any and temperature application.

Natural Ventilation | Solar-iVent


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Passive iStack Natural Ventilation Systems

The passive stack ventilation systems shall operate on well-established aerodynamic principals.The manual windows at high & mid- level in each space will provide adequate fresh input air ata rate that complies with Building Bulletin 101 and CIBSE guidelines and provide no less than8 L/s per person via means of positive pressure against the face of the building structure. Thepositive input air is drawn across each area and through the unit by a negative extract pressureat the Pass- iVent louvre face at the far side of area. Contaminated Co2 laden stale air is thendrawn through the passive stack mounted at roof level.

The system should be intelligently controlled via room mounted temperature and Co2 sensors,with occupancy Co2 levels taking presidency over that of temperature.

The passive stack roof ventilation terminals shall be constructed from fully welded corrosionresistant type 1050 AH14 pure aluminium of 2-3mm thickness, and highly resistant toweathering as well as chemical attack.

The units will be manufactured in accordance with BS EN ISO 9001, and to suit thearchitectural and design parameters as indicated in the design specification and drawings.Internal airways are to be protected by incorporating anti-bird mesh to the terminal louvers.

The units shall be powder coated to the RAL colour as indicated within the design specification.

If required the independent airflow testing & acoustic performance of the roof units from areputable source such as BRE or BSRIA to show compliance can be issued following orderplacement.

Natural Ventilation | Passive-iStack


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Natural Lighting Solutions

Day Lighting systems actively capture daylight from the rooftop andproject through a highly reflective tubing to where its needed.Solatube light tube system uses the most advanced technologies toensure that the efficiency and performance of their systems isunrivalled.

Extension tubes are available in lengths of 610mm (straight) or 380mmlong incorporating a 0-30 adjustable angle along with the new 0-90angle unit. All reflective tubes including adjustable tubes aremanufactured from 99.7% reflective Spectralight Infinity material,allowing tube lengths of up to 15 metres for the SolaMaster 330 DS.

The new Solatube 160 DS, 290 DS & 330 DS (250mm , 350mm and

510mm diameter respectively) set performance standards never seenbefore. These systems feature patented Raybender 3000 Technologyand LightTracker Reflector to deliver unprecedented levels of light higher even than previous Solatube models. Highly efficient and simpleto install, the Solatube Brighten Up Series can transform dark orwindowless areas ideal for residential applications such as kitchens,bathrooms, hallways, stairwells, utility rooms, living areas, or may beinstalled in multiples in larger, open workspaces such as corridors,offices, consultancy rooms, store rooms, and washrooms.

Natural Ventilation | Lighting Solutions


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Natural Lighting Solutions

DIFFUSER OPTIONS

The Brighten Up Series offers a choice ofdiffusers that incorporate Solatube proprietary

lenses for highly effective light distribution.Each features a sleek low-profile dress ring.These attractive and stylish double-glazeddiffusers integrate seamlessly into most ceilingsurfaces with no visible fasteners.

VUSION DIFFUSER

The Vusion diffuser fits neatly to theceiling and delivers outstandingnatural light diffusionthrough a prismatic lens.

OPTIVIEW DIFFUSERS

The technologically advancedOptiView diffuser uses a multipleFresnel lens system with a stunningarchitectural look to deliver crystal

clear daylight.

Available in three designs.

White Trim with OptiView diffuserStainless-Tone with OptiView diffuserFrosted Shade with OptiView diffuser

Natural Ventilation | Lighting Solutions


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High Capacity - Our natural ventilation terminalsare perfect for both natural, passive and solar

powered options, with all four sides possessing aguaranteed 50% free area allowing a more efficientoperation.

High Performance - With the addition of internalvertical channels and integrated water defence, ourstandard terminals can be converted into highperformance Class A rain protection (over 99%effective).

Internal Trunk Housed inside the terminal is afull height divider which keeps fresh and stale air

separate. Both the terminal base and ductworkbelow are lined using a Class O type 12.5mmTHKacoustic foam. The foam offers an ideal acousticcharacteristics and the necessary fire performance.

Additional acoustic layers can be applied toconform to any design criteria required. The rooflid is also acoustically lined to prevent unwantednoise transfer from heavy rain droplets, which canbe amplified into the occupied space below. Thismethod also avoids condensation forming on theunderside of the roof with cold air entering theterminal and hot stale air rising from below .

SpecificationMaterial: Extruded Aluminium

Construction: Blade mitres fully welded

Frame: None internal supporting frame

Fixings: None base suited to raised cillor flat

Sizes: Range from 300mm 6.0m

Height: 0.5m to 3m high

Finish: Standard mill finishaluminium

and option for powder coating

Natural Ventilation | Specification


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Standard features

Ultra high shut offIndependent tests show no leakage below 10Pa;

the pressure most likely to be found in naturalventilation installations.

Excellent thermal insulationWith a theoretical U value of less that 1 W/m2,uPVC volume control dampers lose.

Options specified

Belimo /Siemens modulating actuatorsfactory fittedThe use of Belimo SM series modulatingactuators allows dampers to be set fully open,fully closed or anywhere in between, formaximum adjustability and assurance ofcomfort.

uPVC volume control dampers

Ultra high shut off

In independent tests, large format uPVC

volume control dampers yielded leakageresults normally only achieved by dedicatedshut off dampers.

The VCD sent for testing had a nominal size of1000mm x 806mm, the large size tantamountto our confidence in the damper.

With even 10Pa rarely being exceeded innatural ventilation situations, it is clear howuPVC volume control dampers can enhancethe efficiency of your new natural ventilationsystem.

Natural Ventilation | Dampers


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Actuators

Belimo 24v 10nm Actuator

Siemens 10nm Actuator

Window Control Actuator

The actuator is controlled by means of a standard control signalDC 0 ... 10 V. It opens to the position dictated by this signal. Themeasuring voltage U allows the damper position (0 ... 100%) to beelectrically indicated and serves as a follow-up control signal for

other actuators.Manual operation is possible with the self-resetting pushbutton(the gearing latch remains disengaged as long as the pushbuttonis pressed).

Electronic motor driven actuators for three-position andmodulating control, nominal torque 5 Nm (GDB), 10 Nm (GLB) or2 Nm (GSF), mechanically adjustable span between 0...90, pre-

wired with 0.9 m long connection cables.For damper areas up to 0.8 m (GDB) / 1.5 m (GLB), friction-dependent for GSF1 2 up to 0.3 m 2

Suitable for use with modulating controllers (DC 0...10 V) or three-position controllers for air dampers or air throttles.

The modulation of the window free area will be in tandem withthat of the ventilator stack for each space via 24vDc chain drivenactuators, having quiet operation. The external window openingswill operate in conjunction with the same control signal as thedamper stack openings, with the exception that the windows willoperate at five positions as opposed to the 10 positions of theventilator actuators to minimise window motor wear and ongoingmaintenance of the DC chain driven actuators.

Natural Ventilation | Actuators


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Natural VentilationControlsOur unique range of naturalventilation controls and intelligentsensors have been developed todeliver optimum control and ease of

use of all our natural ventilationsystems.

We can supply traditional combinedsensors (with 0/10v outputs) or sensorswith inbuilt BACnet communications(which supply a modulating controlsignal to end devices such as windowactuator controllers). Our sensors arespecifically designed to be simple to use.

We employ push button overrides, LEDstatus indications and clear labelling tomake things easier for the end users withthe temperature control, the room setpoint for the control of the ventilationdampers can be adjusted in 1 0Cincrements between 21 0C and 28 0C witha seasonal change over and a nightcooling option if a time clock or BMS timesignal is available. Localised Heating canalso be controlled and is set 2 0C belowthe room set point.

Temp and CO 2 Sensor Room Temp Sensor

Our Range of Control Solutions Standalone Sensors* Room Temperature and C0 2 Sensor* Room Temperature and RH Sensor* Room Temperature and RH Sensor with manual

override* Standard room Temperature Sensor

Intelligent Sensors* Intelligent BACnet Room Setpoint Unit* Intelligent Temperature and C0 2 BACnet

Sensor* Intelligent Temperature BACnet Sensor with

manual override* Intelligent Temperature and C0 2 level Indicator

Standalone Controllers* Temperature and C0 2 Room Controller* Temperature and C0 2 Room Controller with

manual override* Temperature and C0 2 Sensor controller with

carbon monoxide indicator.* Temperature room Controller with manual

override*

Temperature room Controller

Peripherals Devices* Chain Window Actuator* Combined Weather Sensor* Digital alarm Unit* Digital Extension Timer* Power supply Unit with Time Clock* Window Control Module with Power supply.

Natural Ventilation | i-Controls


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Dynamic Thermal Modelling

We can offer full dynamic thermal modelling

using the market leading software. Thissoftware utilises building integratedmodelling whereby the same software can beused for multi-faceted studies.

Airtherm Engineering Limited can carry outa thermal model of the building to ensurethe ventilation conforms to building bulletin101.

Natural ventilation modellingWe can model complex natural ventilation strategies making due allowance for: Wind and buoyancy driving pressures The action of occupancy behaviour regarding ventilation openings Automatic controls based on temperature or CO 2 levels Night cooling and thermal mass Wind-iVent and other natural ventilation systems

This type of modelling is far more effective and removes the risk of under performing

ventilation systems within the building

We can advise on: The required number and size of ventilation solutions such as terminals, wall ventilation

and windows The value of night cooling and exposed thermal mass Appropriate strategies to meet BREEAM comfort criteria

Natural Ventilation | Thermal Modelling


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InstallationUnits can be installed on almost every roof including flat, pitched and even on the roof apexwhere appropriate. The roof fabric of commercial applications has bearing on the openingsand roof plates that are required to install the systems competently. We offer a roof platesolution for all situations, including self mount flashings and curb mount flashings withsuitable upstands. The options for each project will be discussed at the design stage in detail,including the necessary openings that are required to suit our systems.

The ductwork for the units can pass through any floor level to transfer air within thebuilding. The units are capable of being controlled and linked to the buildings BMS to ensuredampers are fully closed in the event of a fire. Wind -iVent units can be controlled via mastercontrol panels, room temperature sensors and CO sensors.

We can also offer many bespoke natural ventilation solutions to clients. Our highly skilledwork force adapt at all types of light to medium metal fabrication including stainless steel,aluminum and mild steel. GRP moulded products are also available, most suited to circularformation.

The most common range starts from 500mm to 1200mm and can be combined with anatural lighting system formally known as the Lite -iVent . The Lite -iVent (Light & Vent)system uses both the wind and sun, and offers a ZERO carbon footprint which has no impacton the environment.

Our installation engineers are competent in their field and carry all necessary sitecertification with CSCS cards, IPATH, PASMA and scaffold towers. Our engineers strive

towards excellence in each and every project they undertake.

Natural Ventilation | Installation


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PASS-IVENT SYSTEMS ASHMOUNT SEN SCHOOL

Airtherm Engineering haverecently completed the newinstallation of two natural

ventilation systems for DerryBuilding Services Limitedbased in Newark.

Airtherm had previouslydesigned and selected thecorrect systems to serve thenew hall within the School.

This process required criticalinformation to establish the

correct airflow and terminalsize, and working closely withboth Derry Building Servicesand Leicester Council thisinstallation was a success.

WIND-IVENT SYSTEMS WESTCOMBE PARK SCHOOL

This new build school project is theamalgamation of two localPrimary Schools John Roan School,& Maze Hill School situated in southeast London.

The design of the schoolincorporates various environmentalfeatures to provide a low carbonsolution, including natural ventilation & lighting systems

The terminal sizes have beenselected by our new computeraided software Wind -iCalcand fully conforms to theCIBSE requirements.

NATURAL VENTILATION ABBEYWOOD SCHOOL

Penthouse Passive Stack Terminals

uPVC Volume Control Dampers 32no aqua blue ventilation turrets

Insulated internal diverters

Internal bird screen

Access lockable doors

C SE STUDIES

Natural Ventilation | Case Studies


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PASSIVE VENTILATION THE MIDLAND STUDIO

Airtherm Engineering haverecently completed the newinstallation of two natural

ventilation systems at MidlandCollege Studio. Airtherm wereMVS Ltd first choice whenconsidering the scheme dueour knowledge and experienceon previous installations.

The project involved the use ofour Airtherm wall mounted i-control solution whichconsists of room mounted ABS

plastic control panel C/w in-built temperature sensor, C0 2 self-calibrating carbon dioxidesensor with traffic lightindicators, night time coolingand external rain sensors. Thecomplete system wascommissioned by ourappointed engineers.

WIND-IVENT SYSTEMSHOLFORD DRIVE SPORTS CENTRE

The newly built sports centre is based inPerry Barr, Birmingham and will hold highend boxing national events.

There are six terminals located within thesports hall and one situated within themezzanine floor area serving the officespace.

Airtherm also provided the controlsolution which consists of standaloneroom temperature and C0 2 sensors andRed Lion interface panel.

The natural ventilation systemshave been designed in line with allcurrent publications such as CIBSEguidelines, AM10 Natural

Ventilation in commercial buildingsand Building Bulletin 101.

NATURAL VENTILATIONCOPPICE PRIMARY SCHOOL

The Coppice Primary School is atwo form entry school ,though

larger than the average primaryschool. Airtherm completed the1 st phase works by installingtwo Wind -iVent Systems to thenewly completed single storeyclass rooms. The 2 nd phase fixfeatures a further six 1.2msqunits for the Hall area which willbe used mostly by the Church,and a further six 1.1msq unitsserving the Classrooms

The new installation of fourteennatural ventilation systems forMVS Limited had been designedand carefully selected from theroom data sheets provided,ensuring adequate ventilationrates for the pupils are met.

C SE STUDIES

Natural Ventilation | Case Studies


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Contact us on: Visit our website: Email us:

mini natural ventilation brochure 2014

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