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INDAQS Indoor Air Quality Simulator with Interactive Consumer

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University of Texas at Austin. Insufficient for our types of questions. No ... Common simulation engine powers both lab and consumer interfaces. Future Work ... – PowerPoint PPT presentation

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Title: INDAQS Indoor Air Quality Simulator with Interactive Consumer


1
INDAQSIndoor Air Quality Simulatorwith
Interactive Consumer Lab Interface
  • Janet Guntly and Amber Loftis
  • Advisors Dr. Tauritz and Dr. Morrison
  • Mentors Ekaterina Holdener and Meredith Springs
  • Department of Computer Science
  • Department of Civil, Architectural, and
    Environmental Engineering
  • Sponsored by CRA-W

2
Motivation
  • Among top five environmental health risks1
  • Americans spend 90 of time indoors2
  • Exposure to pollutants can result in allergies,
    irritations, respiratory illnesses, and cancer4
  • Costs US roughly 160 billion a year3

3
Goals
  • Raise consumer awareness
  • Improve consumer health
  • Provide easy computational research tool
  • Undergraduate research
  • Interdisciplinary collaboration
  • Extracurricular learning
  • Exposed to graduate style learning

4
Questions
  • Consumer
  • What happens to the air quality in my home when I
    use cleaning supplies?
  • Is my air purifier improving my indoor air
    quality?
  • Researchers
  • What is the deposition velocity and is a mistake
    possible?
  • What is the concentration of ozone in the chamber
    for a-pinene experiments?

5
Existing Simulations
  • CONTAM
  • Overly complex for consumers
  • http//www.bfrl.nist.gov/IAQanalysis/
  • University of Texas at Austin
  • Insufficient for our types of questions
  • No data interpretation
  • http//www.ce.utexas.edu/bmeb/index.cfm

6
Equations
  • Steady state rate model
  • Nazaroff (1986)5 and Carslaw (2007)6

7
Developing Model Input
  • Determined acceptable ranges and estimated
    default values
  • Aggregation of values identified during extensive
    literature search

8
Example Air Exchange Rate
  • Murray and Burnmaster (1995)7
  • Range 0.05 - 6.5
  • Mean for US 0.5
  • Mostly for windows closed
  • Howard-Reed (2002)8
  • Range 0.10 0.82 windows closed
  • 0.44 - 1.66 windows open

9
Simulation Engine
  • Common backend for consumer and lab interfaces
  • Solves the set of equations for user-selected
    unknowns
  • Employs the GNU Scientific Library (GSL) for
    Multidimensional Root-Finding9

10
Consumer Interface
11
Lab Interface
12
Summary
  • Indoor air quality is a critical, but
    under-researched health concern
  • Determined acceptable variable ranges and values
    for common indoor air equations
  • Common simulation engine powers both lab and
    consumer interfaces

13
Future Work
  • Validate solutions and acceptable ranges
  • Dynamic temporal-spatial equations
  • Lab tests for a specific emission or source
  • Add more features to the interfaces
  • More scenarios
  • Add animation
  • Advanced integrated interface

14
Impacts
  • Template simulation engine for other uses (i.e.,
    medical)
  • Empower consumers to make informed decisions
  • Increase productivity of researchers

15
Primary Sponsor
  • Computing Research Association Committee on the
    Status of Women in Computing Research (CRA-W)
  • Program Multidisciplinary Research Opportunities
    for Women (MRO-W)

16
Missouri ST Sponsors
  • Department of Computer Science
  • Department of Chemical Engineering
  • Department of Civil, Architectural and
    Environmental Engineering
  • Womens Leadership Institute
  • Academic Affairs
  • Intelligent Systems Center

17
References
  • 1 Guide to Air Cleaners in the Home. United
    States Environmental Protection Agency. Office
    of Air and Radiation, Oct. 2007.
  • 2 Spengler, John and Samet, Jonathan. Indoor Air
    Quality Handbook. New York McGraw-Hill, 2000.
  • 3 Fisk, William. E-Vision 2000 Conference, 11-13
    Oct. 200, Washington DC. Health and Productivity
    Gains from Better Indoor Environments and Their.
    Berkeley Lawrence Berkeley National Laboratory,
    2000.
  • 4 Godish, Thad. Sick Buildings Definition,
    Diagnosis and mitigation. Boca Raton Lewis
    Publishers Inc., 1995.
  • 5 Nazaroff, William W., and Glen R. Cass.
    "Mathematical Modelling of Chemically Reactive
    Pollutants in Indoor Air." Environmental Science
    Technology 20 (1986) 924-34.
  • 6 Carslaw, Nicola. "A new detailed chemical model
    for indoor air pollution." Atmospheric
    Environment 41 (2007) 1164-179.
  • 7 Murray, Donald M., and David E. Burnmaster.
    "Residential Air Exchange Rates in the United
    States Empirical and Estimated Parametric
    Distributions by Season and Climatic Region."
    Risk Analysis 15 (1995) 459-65.
  • 8 Howard-Reed, Cynthia, Lance A. Wallace, and
    Wayne R. Ott. "The Effect of OPening Windows on
    Air Change Rates in Two Homes." Journal of the
    Air Waste Management Association 52 (2002)
    147-59.
  • 9 lthttp//www.gnu.org/software/gsl/manual/html_nod
    e/
  • Multidimensional-Root_002dFinding.htmlgt.

18
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