An evaluation of a novel wind tunnel design applied to the measurement of the kinetics of odour emissions from piggery effluent

Sohn, Jae Ho and Smith, Rod and Yoong, Ernest and Hudson, Neale A. and Kim, Tae I. (2004) An evaluation of a novel wind tunnel design applied to the measurement of the kinetics of odour emissions from piggery effluent. Water Science and Technology, 50 (4). pp. 49-55. ISSN 0273-1223

Abstract

A novel laboratory wind tunnel, with the capability to control factors such as air flow-rate, was developed to measure the kinetics of odour emissions from liquid effluent. The tunnel allows the emission of odours and other volatiles under an atmospheric transport system similar to ambient conditions. Sensors for wind speed, temperature and humidity were installed and calibrated. To calibrate the wind tunnel, trials were performed to determine the gas recovery efficiency under different air flow-rates (ranging from 0.001 to 0.028m3/s) and gas supply rates (ranging from 2.5 to 10.0 L/min) using a standard CO gas mixture. The results have shown gas recovery efficiencies ranging from 61.7 to 106.8%, while the average result from the trials was 81.14%. From statistical analysis, it was observed that the highest, most reliable gas recovery efficiency of the tunnel was 88.9%. The values of air flow-rate and gas supply rate corresponding to the highest gas recovery efficiency were 0.028 m3/s and 10.0 L/min respectively. This study suggested that the wind tunnel would provide precise estimates of odour emission rate. However, the wind tunnel needs to be calibrated to compensate for errors caused by different air flow-rates


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to paper due to publisher copyright restrictions.
Depositing User: Ms Leslie Blay
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 01 Jun 2010 11:15
Last Modified: 02 Jul 2013 23:56
Uncontrolled Keywords: air flow-rate; emission; gas recovery efficiency; liquid effluent; odour; wind tunnel
Fields of Research (FOR2008): 09 Engineering > 0999 Other Engineering > 099902 Engineering Instrumentation
07 Agricultural and Veterinary Sciences > 0702 Animal Production > 070203 Animal Management
09 Engineering > 0907 Environmental Engineering > 090703 Environmental Technologies
09 Engineering > 0999 Other Engineering > 099901 Agricultural Engineering
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9601 Air Quality > 960103 Farmland, Arable Cropland and Permanent Cropland Air Quality
URI: http://eprints.usq.edu.au/id/eprint/8228

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