Document Detail


Whole house particle removal and clean air delivery rates for in-duct and portable ventilation systems.
MedLine Citation:
PMID:  19044163     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A novel method for determining whole house particle removal and clean air delivery rates attributable to central and portable ventilation/air cleaning systems is described. The method is used to characterize total and air-cleaner-specific particle removal rates during operation of four in-duct air cleaners and two portable air-cleaning devices in a fully instrumented test home. Operation of in-duct and portable air cleaners typically increased particle removal rates over the baseline rates determined in the absence of operating a central fan or an indoor air cleaner. Removal rates of 0.3- to 0.5-microm particles ranged from 1.5 hr(-1) during operation of an in-duct, 5-in. pleated media filter to 7.2 hr(-1) for an in-duct electrostatic air cleaner in comparison to a baseline rate of 0 hr(-1) when the air handler was operating without a filter. Removal rates for total particulate matter less than 2.5 microm in aerodynamic diameter (PM2.5) mass concentrations were 0.5 hr(-1) under baseline conditions, 0.5 hr(-1) during operation of three portable ionic air cleaners, 1 hr(-1) for an in-duct 1-in. media filter, 2.4 hr(-1) for a single high-efficiency particle arrestance (HEPA) portable air cleaner, 4.6 hr(-1) for an in-duct 5-in. media filter, 4.7 hr(-1) during operation of five portable HEPA filters, 6.1 hr(-1) for a conventional in-duct electronic air cleaner, and 7.5 hr(-1) for a high efficiency in-duct electrostatic air cleaner. Corresponding whole house clean air delivery rates for PM2.5 attributable to the air cleaner independent of losses within the central ventilation system ranged from 2 m3/min for the conventional media filter to 32 m3/min for the high efficiency in-duct electrostatic device. Except for the portable ionic air cleaner, the devices considered here increased particle removal indoors over baseline deposition rates.
Authors:
David L Macintosh; Theodore A Myatt; Jerry F Ludwig; Brian J Baker; Helen H Suh; John D Spengler
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Air & Waste Management Association (1995)     Volume:  58     ISSN:  1096-2247     ISO Abbreviation:  J Air Waste Manag Assoc     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-12-02     Completed Date:  2009-01-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9503111     Medline TA:  J Air Waste Manag Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1474-82     Citation Subset:  IM    
Affiliation:
Environmental Health & Engineering, Inc., Needham, MA 02494, USA. dmacintosh@eheinc.com
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants, Occupational / analysis*
Air Pollution / analysis*
Environmental Monitoring / statistics & numerical data*
Meteorology / statistics & numerical data*
Models, Statistical*
Oxidants, Photochemical / analysis*
Ozone / analysis*
Thailand
Vietnam
Weather
Chemical
Reg. No./Substance:
0/Air Pollutants, Occupational; 0/Oxidants, Photochemical; 10028-15-6/Ozone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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