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Description: Safety accidents due to harmful gases occur continuously in pig farms. Interest and importance in worker?s safety and well-being is increasing. Appropriate management method of harmful gases are needed to reduce the accident caused by harmful gases. Reduction of harmful gases through the ventilation system has direct emission of harmful gases and economic advantages. When performing the ventilation analysis, we must consider sharply temperature change of the breeding environment because temperature change caused problem in breeding environment of the pigs. There are many difficulties in constructing data for analyzing ventilation system from only field experiment. These problems can be solved through computational fluid dynamics. The purpose of this study was to make proper ventilation operating management plan for improving the working and breeding environment by using computational fluid dynamics. We measured the concentration of harmful gases actually exposed to workers through field experiments. In previous research, the CFD simulation model was developed and validated, Ventilation efficiency of 40 combinations were analyzed using CFD simulation. We realized the ammonia concentration at worker?s height (1.5 m) in simulation model and analyzed reduction effect of each ventilation structures. As a result of analysis, when increasing inlet area, changing exhaust fan, ventilation efficiency at worker?s height increase. As a result of harmful gases reduction modeling, increasing inlet area has highest reduction rate, but there was sharply temperature change in the breeding environment. When the both ventilation structures were applied for reduction harmful gases, it has high reduction rate and minimize temperature change in breeding environment. Based on the result, it can use as basic data of algorithm construction for precise control. It can reduce the safety accidents by harmful gases and improve the breeding and working environment.

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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: 4th international Symposium on Gas Emissions and Dust from Livestock (EMILI) 5 - Mitigation Strategies

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Publication type: Presentation
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Coverage: Korea, Republic of (South Korea)
Language 1: en
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Rights: Canadian Society for Bioengineering
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