The influence of HVAC systems on indoor secondary organic aerosol formation.(heating, ventilation, and air-conditioning systems)(Report): An article from: ASHRAE Transactions
Book Details
Author(s)Michael S. Waring, Jeffrey A. Siegel
ISBN / ASINB003QN3ZW8
ISBN-13978B003QN3ZW0
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on January 1, 2010. The length of the article is 13318 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.
From the author: Chemical reactions between ozone and terpenoids can yield secondary organic aerosol (SOA), which are potentially a large source of indoor particles that are harmful to human health. The mass of SOA formed in a building is influenced by the operation of the heating, ventilation, and air-conditioning (HVAC) system. This investigation models the influence of HVAC systems on SOA concentrations in residential and commercial buildings. A parametric analysis explores the role of ventilation and recirculation rates, filtration efficiency and loading, and the operation of heat exchangers. In a rural setting, the median residential and commercial SOA concentrations for all simulations were 17.4 [micro]g/[m.sup.3] (1.09 x [10.sup.-9] lb/[ft.sup.3]), with a range of 2.47 to 27.0 [micro]g/[m.sup.3] (1.54 x [10.sup.-10] - 1.68 x [10.sup.-9] lb/[ft.sup.3]), and 10.6 [micro]g/[m.sup.3] (6.61 x [10.sup.-10] lb/[ft.sup.3]), with a range of 1.81 to 26.3 [micro]g/[m.sup.3] (1.13 x [10.sup.-10] - 1.64 x [10.sup.-9] lb/[ft.sup.3]), respectively. In an urban setting, the median predicted residential and commercial SOA concentrations were 68.0 [micro]g/[m.sup.3] (4.24 x [10.sup.-9] lb/[ft.sup.3]), with a range of 14.7 to 108 [micro]g/[m.sup.3] (9.17 x [10.sup.-10] - 6.74 x [10.sup.-9] lb/[ft.sup.3]), and 44.8 [micro]g/[m.sup.3] (2.80 x [10.sup.-9] lb/[ft.sup.3]), with a range of 11.6 to 105 [micro]g/[m.sup.3] (7.24 x [10.sup.-10] - 6.55 x [10.sup.-9] lb/[ft.sup.3]), respectively. The most influential HVAC parameters are the flow rates through the system, particle filtration efficiency, and indoor temperature for the residential and commercial models, as well as ozone removal on used filters for the commercial model. The results presented herein can be used to estimate the effects of altering HVAC system components and operation strategies on indoor SOA concentrations and subsequent exposure.
Citation Details
Title: The influence of HVAC systems on indoor secondary organic aerosol formation.(heating, ventilation, and air-conditioning systems)(Report)
Author: Michael S. Waring
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 1 Page: 556(16)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
From the author: Chemical reactions between ozone and terpenoids can yield secondary organic aerosol (SOA), which are potentially a large source of indoor particles that are harmful to human health. The mass of SOA formed in a building is influenced by the operation of the heating, ventilation, and air-conditioning (HVAC) system. This investigation models the influence of HVAC systems on SOA concentrations in residential and commercial buildings. A parametric analysis explores the role of ventilation and recirculation rates, filtration efficiency and loading, and the operation of heat exchangers. In a rural setting, the median residential and commercial SOA concentrations for all simulations were 17.4 [micro]g/[m.sup.3] (1.09 x [10.sup.-9] lb/[ft.sup.3]), with a range of 2.47 to 27.0 [micro]g/[m.sup.3] (1.54 x [10.sup.-10] - 1.68 x [10.sup.-9] lb/[ft.sup.3]), and 10.6 [micro]g/[m.sup.3] (6.61 x [10.sup.-10] lb/[ft.sup.3]), with a range of 1.81 to 26.3 [micro]g/[m.sup.3] (1.13 x [10.sup.-10] - 1.64 x [10.sup.-9] lb/[ft.sup.3]), respectively. In an urban setting, the median predicted residential and commercial SOA concentrations were 68.0 [micro]g/[m.sup.3] (4.24 x [10.sup.-9] lb/[ft.sup.3]), with a range of 14.7 to 108 [micro]g/[m.sup.3] (9.17 x [10.sup.-10] - 6.74 x [10.sup.-9] lb/[ft.sup.3]), and 44.8 [micro]g/[m.sup.3] (2.80 x [10.sup.-9] lb/[ft.sup.3]), with a range of 11.6 to 105 [micro]g/[m.sup.3] (7.24 x [10.sup.-10] - 6.55 x [10.sup.-9] lb/[ft.sup.3]), respectively. The most influential HVAC parameters are the flow rates through the system, particle filtration efficiency, and indoor temperature for the residential and commercial models, as well as ozone removal on used filters for the commercial model. The results presented herein can be used to estimate the effects of altering HVAC system components and operation strategies on indoor SOA concentrations and subsequent exposure.
Citation Details
Title: The influence of HVAC systems on indoor secondary organic aerosol formation.(heating, ventilation, and air-conditioning systems)(Report)
Author: Michael S. Waring
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2010
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 116 Issue: 1 Page: 556(16)
Article Type: Report
Distributed by Gale, a part of Cengage Learning
