1. Indoor Environmental Science & Engineering Richard Corsi, Kerry Kinney, Jeffrey Siegel, Atila Novoselac, Ying Xu

2. When did indoor air quality problems begin?

3. Situation Persists in Developing World ½ world’s population (> 3 B) relies on coal and biomass for domestic energy, and number is increasing! Simple stoves Incomplete combustion Often not vented 2 – 2.8 million deaths/year 4% of global mortality 1 million childhood deaths/year Women: 2/3 w/ lung cancer are non-smokers!

4. Indoor Air Quality in U.S. - Evolution Start = End of World War II Levittown, New York (1948) 800 square feet 4 bedroom / 1 bath = $6,900

5. Demand for Ease of Life Wall-to-wall carpet Cleaners Air fresheners Pesticides Personal care products Much more

6. Air Conditioning Total Primary Energy Consumption - 2007 Residential and Commercial Industrial Transportation 28.5% 32.1% 39.4% ~ 21% residential ~ 18% commercial 1953: < 5% in US with AC (window) Today: > 80% in US with AC > 50% central AC Open + Fan Close + AC

7. Americans = Indoor Creatures Indoors89% 2/3 of time in home Transit6% Outdoors5% 18 hours indoors for every 1 outdoors

8. USEPA Risk Rankings 1. (tie)Worker exposure to chemicals 1. (tie)Indoor radon 3.Pesticide residue on foods 4. (tie)Indoor air pollutants (non-radon) 4. (tie)Consumer exposure to chemicals (includes cleaning fluids, etc.) 6.Hazardous/toxic air pollutants 7.Depletion of stratospheric ozone 8.Hazardous waste sites (inactive) 9.Drinking water (radon and THMs) 10.Application of pesticides 16 others.. (including groundwater contamination at 21, criteria air pollutants at 22, etc.)

9. Jeffrey Siegel Particles Richard Corsi Gases Atila Novoselac Modeling Kerry Kinney Microorganisms Ying Xu Emission Neil Crain Chemistry Complementary Research Unique Program Faculty and Specific Expertise in Indoor Environmental Research

10. Features of Our Program Diverse curriculum Interdisciplinary student community NSF-funded IGERT program –IGERT trainees and affiliates State-of-the art laboratories and test house

11. Siegel Team Research Themes Primary and secondary impacts of particle control technologies and strategies Aerosol transport in indoor environments Connections between energy and indoor air quality

12. Recent/Ongoing Projects Ozone emission from in-duct air cleaners Passive removal of pollutants HVAC filters as passive samplers Energy implications of filtration “Clogged, dirty filters block normal air flow and reduce a system's efficiency significantly…. Keeping the filter clean can lower your air conditioner's energy consumption by 5%–15%.” X

13. New Project Indoor air quality and ventilation in retail stores Fundamental problem –Huge energy expenditure from ventilation (50% of total) –Very diverse types of buildings/sources Stores want to diminish energy use Research will explore connection between building ventilation rate, store type, climate, season, occupant perception, and several indoor air quality measures –Microbioogy, SVOCs, VOCs, aldehydes, particles, ozone, CO 2, etc Largest study ever funded by ASHRAE

14. Positions Looking for 1-3 students Qualifications –Interested in indoor environments and energy measurements –Enjoy fieldwork –Detail-oriented –Creative –Will be in EWRE until 12/31/2012 or later

15. Position – Ozone Air Cleaners Looking for 1 student Qualifications –Interested in indoor environments and –Enjoy laboratory work –Detail-oriented –M.S. project

16. Contact Information jasiegel@mail.utexas.edu (512) 471-2410 ECJ 5.2

17. Faculty

18. Large environmental chamber Full scale test house (UTest) HVAC simulator GC/MS and small chambers Laboratories

19. CE 389TIndoor Air Quality: Trans. and Control - Siegel CE 396L.4 Indoor Air Quality: Physics and Chem. – Corsi CE 397 Sources & Indoor Air Pollution – Xu CE 397Air and Pollutant Flows in Buildings - Novoselac CE 381E Energy Efficient & Healthy Buildings - Siegel CE 397 Energy Simulation in Building Design - Novoselac CE 389H HVAC Design – Novoselac/Siegel CE 397 Human Exposure Assessment – Corsi CE 397 Renewable Energy and Envir. Sustainability - Xu CE397Indoor Air Quality Field Measurements - Siegel CE 397IGERT Technical Exchange A/B – Corsi/Hart Courses

20. 20 Students 37 IGERT Students –Trainees = 21 (including 6 alumni) –Affiliates = 16 (including 8 alumni) –Multidisciplinary Environment –Departments represented: CAEE, Economics, ME, Toxicology, Community and Regional Planning, Advertising –13 faculty advisors (seven from CAEE) 13 CAEE Students –In broader area of architectural and environmental engineering

21. Novoselac Research Themes –Human exposure to pollutants in indoor environments –Heat and mass transfer at indoor surfaces –Transport between indoor and outdoor environment –Use of phase change materials as building thermal storage systems

22. 2) Experiments1) Modeling (CFD) Pollutant Transport & Human Exposure Research Approach: O3O3 - Person to person exposure in public spaces - Ventilation systems for nurseries

23. Heat and Mass Transfer at Indoor Surfaces h heat = f ( ACH, ΔT) h mass = f ( ACH, ΔT,…) use in air quality analyses

24. Transport Between Indoor and Outdoor Environment Wind direction Wind fluctuation Defines: natural ventilation, infiltration, pollutant transport, …

25. night Power [w] day Day time Small thermal mass Large thermal mass Phase Change Materials as Building Thermal Storage Systems Low thermal mass Large thermal mass Energy cost Saving ~ 5% Same saving like integrating photovoltaic cells on south-east and south-west façades

26. Ying Xu Research Themes Semi-Volatile Organic Compounds (SVOC) Emissions from Building Materials –Modeling emission characteristics –Chamber study on emission process –Directly measure emission control parameters –Investigate SVOC interaction with other surfaces –SVOC transport and human exposure Environmentally Benign Materials

27. SVOC Emissions from Building Materials Phthalate plasticizers −High conc., 40% by weight −Reproductive tract −Asthma and allergic symptoms Adverse effects 40%

28. SVOC Emissions from Building Materials Mass Transfer Based Model Chamber Study Measure Control Parameters Human Exposure

29. Additive adsorption materials Additive adsorption materials Barrier layer …… …… Alternatives Environmentally Benign Materials Cleaning products Biocides Flame retardants Structural insulated panels

30. Positions Indoor air quality and ventilation in retail stores –Looking for 1-3 students Ozone Air Cleaners –Looking for 1 student Contact Information: Jeffrey Siegel jasiegel@mail.utexas.edu (512) 471-2410 ECJ 5.2