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Evaluation of Pressure Loss Factors considering Various Ventilation Systems for Optimal Ventilation Design in Piglet House
Authors: Young-bae Choi, Jun-Gyu Kim, Rack-woo Kim, In-bok Lee, Sang-yeon Lee, Cristina Decano, Se-jun Park, Jeong-hwa Cho, Hyo-hyeog Jeong
Identifier: CSBE21714
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Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » Regular Sessions
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Description: The indoor environment conditions of mechanically ventilated piglet houses depend on the performance of exhaust fans. Owing to fan performance which has a great impact on the comfort of animals and pollutants emission, appropriate selection of fans should be properly considered. However, in-situ fan performance has reduced compared to design fan performance because of the various pressure loss factors. This study attempted to evaluate pressure loss factors by measuring airflow rate of fans and static pressure in piglet house. The experiments were conducted in a standard Korean pig house with a combined ceiling slot inlet, side window inlet, side exhaust fan, chimney exhaust fan, and so on. The pressure loss factors were evaluated Using the fan law and orifice theory. Analysis of the result showed that in-situ fan performance was reduced by 7 ~ 35 % compared to the design fan performance. Furthermore, the comparison of side and chimney exhaust fans showed that the side exhaust fans had a higher 20% airflow rate due to duct friction loss and aerodynamic difference. On the other hand, pressure losses due to inlet were different from inlet types and inlet opening size. Because the pressure losses depend on inlet and outlet type, location, size, and so on, those characteristics should be considered for the optimal ventilation design.
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Date: 2021-06-11
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Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Building & Materials
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Type: Text.Abstract
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Publication type: Presentation
Source:
Relation:
Coverage: Korea, Republic of (South Korea)
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
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Other files:
DOI:
Description: The indoor environment conditions of mechanically ventilated piglet houses depend on the performance of exhaust fans. Owing to fan performance which has a great impact on the comfort of animals and pollutants emission, appropriate selection of fans should be properly considered. However, in-situ fan performance has reduced compared to design fan performance because of the various pressure loss factors. This study attempted to evaluate pressure loss factors by measuring airflow rate of fans and static pressure in piglet house. The experiments were conducted in a standard Korean pig house with a combined ceiling slot inlet, side window inlet, side exhaust fan, chimney exhaust fan, and so on. The pressure loss factors were evaluated Using the fan law and orifice theory. Analysis of the result showed that in-situ fan performance was reduced by 7 ~ 35 % compared to the design fan performance. Furthermore, the comparison of side and chimney exhaust fans showed that the side exhaust fans had a higher 20% airflow rate due to duct friction loss and aerodynamic difference. On the other hand, pressure losses due to inlet were different from inlet types and inlet opening size. Because the pressure losses depend on inlet and outlet type, location, size, and so on, those characteristics should be considered for the optimal ventilation design.
Keywords:
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2021-06-11
Technical field:
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: Building & Materials
Other information:
Type: Text.Abstract
Format:
Publication type: Presentation
Source:
Relation:
Coverage: Korea, Republic of (South Korea)
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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