Environmental Engineering Reference
In-Depth Information
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Equip-
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Ensor, D.S. et al., Air cleaner technologies for indoor air pollution, Engineering Solu-
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CC-00-1-86, Institute of Environmental Sciences, Mt. Prospect, IL, 1986.
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ence Book , Elsevier, Amsterdam, 1995, chap. 31.
McNall, P.E., Practical methods of reducing airborne contaminants in interior spaces,
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400/1-90-002, USEPA, Washington, D.C., 1990.
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USEPA, Washington, D.C., 1997.
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and Health Consequences , www.epa.gov/iaq/pubs/ozongen.html , 1 999.
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Questions
1. What is the primary use of air cleaning in indoor spaces? Why?
2. How do fibrous media filters collect dust particles?
3. What is the relationship between particle size and the ability of media filters
to collect particles efficiently?
4. What factors affect the performance of fiber media filters?
5. Describe the properties and performance of HEPA filters.
6. Describe the relationship between filter collection efficiency and pressure drop.
7. Why are extended media filters used in many building applications?
8. Describe uses for viscous and renewable media filters.
9. Describe the relationship between filter soiling, air flow resistance, and clean-
ing efficiency.
10. Describe the principle of operation and cleaning effectiveness of electronic air
cleaners.
11. What are the advantages and disadvantages of using extended media and
electronic air cleaners as in-duct devices in residential air cleaning?
12. How is the performance of dust air cleaning devices determined?
13. What is the difference between arrestance and dust spot efficiency?
14. How effective are free-standing air cleaning devices commonly available in
the market and purchased by consumers?
15. How do ion generators work? How effective are they?
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