ARE 381E/ CE 381E/ ARE377KDesign of Energy Efficient and

Healthy Buildings

• Dr. Jeffrey Siegel ECJ 5.302

• Office Hours Tu Th 2-3:30pm

Admin

• Has everybody been able to access the webpage?• Not all content on webpage

• Are class registration issues resolved?

Grading

Oral Exam 15%

Software Mini-Project 20%

Final Project 60%

Participation 5%

100%

Final Project

• Major open-ended design effort based on themes of the class

• Work with a partner – I can assist with matching

• Spend ~100 hours/person on your project

• Opportunity to explore an area of interest

• Goal from this is to produce a professional 6-page conference paper.

Ground Rules

1. Topic must involve some component of design.

2. Topic must be substantially different from project done for other classes (current or past).

3. Content must be new or innovative. Some part of it should never have been done before.

4. Topic must relate to the themes of the class and be approved by me (via justification).

5. Topic must have substantial depth.

Topic Selection

• Projects from last year• Very challenging to pick a good topic• Common issues

• Specificity• Depth• Scope• Feasibility

• Your interest is a good starting point• Everybody who has done a good project has

complained about the work involved

Tools

• Building Environmental Systems toolkit• Particles• VOCs• Environmental parameters• Flow/pressure• Light sensor

• Others

Example Projects

• To give you some ideas

• Not meant to limit your creativity or scope

• Think about depth, rather than breadth

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Stranden (1983) Siotis and Wrixon (1984)Ulbak et al. (1984) Van Der Lugt and Scholten (1985)Ackers et al. (1985) Van Dijk and de Jong (1991)Roelofs and Scholten (1994) de Jong et al. (1996)Man and Yeung (1997) Keller et al. (2001)

Past Successful Projects

• Many others also successful, just examples

• Radon emission from green concrete• Importance of topic• Lack of unification in literature• Tractable analysis

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Stranden (1983)Siotis and Wrixon (1984)Ulbak et al. (1984)Van Der Lugt and Scholten (1985)

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Product of Fly Ash 226Ra Specific Activity and Fly Ash Content (Bq kg-1)

Example Projects – Filter Bypass

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Aromatherapy

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Idea 1: Moisture Response

• Buildings are becoming sensibly more efficient

• Latent removal is not handled well by current equipment

• Moisture “insults” are a significant economic and health concern

• Goal: Measure moisture response in several residences

Benefits

• Design of novel latent removal system

• Recovery from leaks

Strategies

• Apply well mixed reactor model to water vapor• Measure air exchange• Eliminate sources

• Only unknown is net moisture absorption AKA moisture response

Issues

• Sample size

• Willingness of subjects

• Time consuming measurements

• AC interactions

Idea 2: Ventilation

• CO2 is often used to measure ventilation

• Example: Austin smoking ordinance

• Goal: compare CO2 to SF6 (more robust tracer)

• Implications for measuring ventilation rate

Pre Post Pre Post Pre Post

Venue Mean Mean Mean (S.D.) Mean (S.D.) Mean Mean

1 468 452 2255 (71) 2538 (183) 1.00 0.75

2 457 502 2279 (126) 1895 (207) 0.75 0.94

3 453 423 2235 (198) 1208 (202) 1.44 1.67

4 417 480 1017 (57) 699 (41) 3.71 6.59

5 450 463 1251 (55) 1414 (37) 4.21 3.99

6 452 436 2256 (376) 1854 (56) 0.92 0.71

7 457 480 1889 (111) 3104 (225) 1.28 0.54

8 520 552 2057 (112) 1041 (84) 0.70 2.69

9 477 1605 (134) 10.75

10 478 2005 (69) 3.52

11 788 2979 (565) 1.29

12 716 446 3356 (338) 1821 (269) 3.05 6.01

13 736 442 2328 (118) 1297 (168) 5.02 9.89

14 722 419 5388 (549) 3838 (593) 0.44 0.98

15 668 437 5294 (541) 2647 (272) 1.30 2.19

16 767 589 2333 (63) 1038 (59) 1.25 3.02

17 654 533 1990 (99) 1563 (133) 0.69 0.91

Indoor CO2 (ppm) Estimated Ventilation (h-1)Outdoor CO2 (ppm)

Issues

• Access/human subjects approval

• SF6 analyzer training

• Planning

Idea 3: Energy Efficiency

• Evaluation of “real” appliance efficiency

• Many appliances are rated based on ideal test procedure

• Test appliance under real conditions

• Goal: Does rating match predicted energy use?

• Issues• Differentiation from product testing• Control of all variables

Idea 4: UT Solar Decathlon

• Opportunity to work with other students to design a project with lasting impact

• Overcome barriers between engineers and architects

• Issue• Need to think of well-crafted project• Unsuccessful in the past

What About a Pure Design Project?

• Okay, but has to be crafted well

• Similar issues of depth, scope, and specificity

Deliverables

Topic justification February 2 5

Experimental protocol February 16 5

Literature review February 23 10

Draft of final report April 6 10

Technical reviews (2) April 18 15

Oral presentations April 25-27 20

Final report, Response to reviews

May 4 30, 5

Reminder

• Dr. Corsi, next Tuesday (1/24)

• I will be at ASHRAE meeting• E-mail me about project ideas

• Thursday 1/26 Software Mini-Project, more project discussion