Lecture Objectives:

-Discus Final Project-Learn about Solar Systems

- HW3 (final HW assignment)

-HVAC system

Final Project Topics • You need to form groups:

– Maximum 3 members– Grad Students – individual projects

• You need to visit me during this week– Office hours: Today, Wednesday, Thursday, and Friday

• You need to prepare the project description– Till Tuesday next week (November 17th)

Final Project Topics

• Solar Systems– Expand HW3 (PV and hot water)

• Geothermal systems – Incorporated into the eQUEST

• Building Envelope Optimization – Campus buildings, AEI competition, ….

• HVAC systems – Campus buildings, AEI competition, ….

• Lighting Systems – Specific building in eQUEST or other software

• Modeling in matlab – Weep holes, attic temperature, façade systems,….

Solar hot water system

Geothermal Energy Systems(in combination with a cooling machine / heat pump)

Summer Winter

In the summer, the earth acts as a cooling tower. The Cooling Machine loads the loop with heat, sending warmed water to be cooled by the earth

In the winter, the earth acts as the boiler. The Heat Pump extracts heat from the loop, sending cooled water to be warmed by the earth.

Envelope optimization

•AEI Student Competition•A mixed use boiling in New York•Some other building, too

HVAC Systems Ventilation, Heat Recovery, Economizers,…AEI Student Competition Building or some other

Commercial buildings Residential buildings

Saving % - depends on how much ventilation we have in the building

Results from Project 1Example of building tune-up

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

2000 2006 2010 target (2015)

Miscellaneous

Washers

Range

Refrigerator

Lighting

Dryer

Hot water

Heating

Cooling

15620 kWh

12862 kWh

11304 kWh

7086 kWh

A typical house in Austin New single family 2262 sf, 2-story home

Project Fixing Problematic Building at UT

• Example of ECJ building

Final Projects • Your choice of topics

– Visit me during office hours• One possible topic AEI Student Competition• A mixed use boiling in New York • http://www.asce.org/architectural-engineering/aei-student-competition/• http://content.asce.org/files/pdf/8-10-15_Final_2016_Program_AEI_Competition_1.pdf

» /Organizational/Department/Engineering Programs/AEI/AEI STUDENT DESIGN COMPETITION/AEI Student Design Competition 2016/AEI Student Design Competition 2016 Project Drawings

» /Organizational/Department/Engineering Programs/AEI/AEI STUDENT DESIGN COMPETITION/AEI Student Design Competition 2016/2015 Winning Teams Submissions

HW3Solar systems

PV system Silicon crystal base

Tin film

Hot Water Solar

HW3

Redefine house in Project 1 to be more realistic.

a) Find the optimum orientation and positioning angle for your PV solar collectors.

b) Size the PV system that will enable that your house became net zero energy house.

c) Add an electric hot water heater and calculate the new PV system size.

d) Size a hot water solar collector system for your hot water consumption.

e) Calculate the number of days when you need to use electric heater and how much energy is consumed by the backup electric heater.

eQUEST HVAC Models

• Predefined configuration (no change) • Divided according to the cooling and heating sources• Details in e quest help file:

For example:

DX CoilsNo Heating– Packaged Single Zone DX (no heating)

• Packaged single zone air conditioner with no heating capacity, typically with ductwork.

– Split System Single Zone DX (no heating)• Central single zone air conditioner with no heating, typically with ductwork. System has indoor fan and cooling coil and remote

compressor/condensing unit.

– Packaged Terminal AC (no heating)• Packaged terminal air conditioning unit with no heating and no ductwork. Unit may be window or through-wall mounted.

– Packaged VAV (no heating)

DX CoilsFurnace• Packaged direct expansion cooling system with no heating capacity. System includes a variable volume, single duct fan/distribution

system serving multiple zones each with it's own thermostatic control.

– Packaged Single Zone DX with Furnace• Central packaged single zone air conditioner with combustion furnace, typically with ductwork.

– Split System Single Zone DX with Furnace• Central single zone air conditioner with combustion furnace, typically with ductwork. System has indoor fan and cooling coil and remote

compressor/condensing unit.

– Packaged Multizone with Furnace• Packaged direct expansion cooling system with combustion furnace. System includes a constant volume fan/distribution system serving

multiple zones, each with its own thermostat. Warm and cold air are mixed for each zone to meet thermostat control requirements.