Document Detail

Real-time airflow rate measurements from mechanically ventilated animal buildings.
MedLine Citation:
PMID:  19603736     Owner:  NLM     Status:  MEDLINE    
This paper describes techniques used to determine airflow rate in multiple emission point applications typical of animal housing. An accurate measurement of building airflow rate is critical to accurate emission rate estimates. Animal housing facilities rely almost exclusively on ventilation to control inside climate at desired conditions. This strategy results in building airflow rates that range from about three fresh-air changes per hour in cold weather to more than 100 fresh-air changes per hour in hot weather. Airflow rate measurement techniques used in a comprehensive six-state study could be classified in three general categories: fan indication methods, fan rotational methods, and airspeed measurement methods. Each technique is discussed and implementation plans are noted. A detailed error analysis is included that estimated the uncertainty in airflow rate between +/-5 and +/-6.1% of reading at a building operating static pressure, air temperature, relative humidity, and barometric pressure of 20 Pa, 25 degrees C, 50%, and 97,700 Pa, respectively.
Steven J Hoff; Dwaine S Bundy; Minda A Nelson; Brian C Zelle; Larry D Jacobson; Albert J Heber; Jiqin Ni; Yuanhui Zhang; Jacek A Koziel; David B Beasley
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Publication Detail:
Type:  Journal Article; Multicenter Study; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of the Air & Waste Management Association (1995)     Volume:  59     ISSN:  1096-2247     ISO Abbreviation:  J Air Waste Manag Assoc     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-07-16     Completed Date:  2009-08-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9503111     Medline TA:  J Air Waste Manag Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  683-94     Citation Subset:  IM    
Agricultural and Biosystems Engineering Department, Iowa State University, Ames, IA 50011, USA.
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MeSH Terms
Air Movements*
Air Pollutants / chemistry
Air Pollution / prevention & control
Housing, Animal*
Ventilation / instrumentation*,  methods*
Reg. No./Substance:
0/Air Pollutants

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

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