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2023 Vol.65, Issue 1 Preview Page
Evaluation of Ventilation Rate and External Air Mixing Ratio in Semi-closed Loop Ventilation System of Pig House Considering Pressure Loss

압력손실을 고려한 양돈시설의 반폐회로 환기시스템의 환기량 및 혼합비율 평가

You-me Parka
,
Rack-woo Kimbc†
,
Jun-gyu Kimd
박 유미a
,
김 락우bc†
,
김 준규d
aMS Student, Research Institute for Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University
bAssistant Professor, Department of Smart Farm Engineering, College of Industrial Sciences, Kongju National University
c Chief Researcher, Industrial Development Institute, Kongju National University
dPh.D. Student, Research Institute for Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University
a서울대 농생명과학대학 농업생명과학연구소 MS학생
b공주대학교 산업과학대학 스마트팜공학과 조교수
c공주대학교 산업개발원 수석연구원
d서울대학교 농업생명과학대학 농업생명과학연구소 박사과정 학생
† Corresponding author Tel.: 010-5448-7067 E-mail: rwkim@kongju.ac.kr
2023. pp. 61-72
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Abstract

The increase in the rearing intensity of pigs has caused deterioration in the pig house’s internal environment such as temperature, humidity, ammonia gas, and so on. Traditionally, the widely used method to control the internal environment was through the manipulation of the ventilation system. However, the conventional ventilation system had a limitation to control the internal environment, prevent livestock disease, save energy, and reduce odor emission. To overcome this problem, the air-recirculated ventilation system was suggested. This system has a semi-closed loop ventilation type. For designing this system, it was essential to evaluate the ventilation rates considering the pressure loss of ducts. Therefore, in this study, pressure loss calculation and experiment were conducted for the quantitative ventilation design of a semi-closed loop system. The results of the experiment showed that the inlet through which external air flows should always be opened. In addition, it was also found that for the optimum design of the semi-closed loop ventilation system, it was appropriate to install a damper or a backflow prevention device rather than a ventilation fan.

Keywords
External air mixing ratio
piglet house
pressure loss
semi-closed loop ventilation system
References

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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 65
  • No :1
  • Pages :61-72
  • Received Date : 2022-10-19
  • Revised Date : 2022-11-10
  • Accepted Date : 2022-11-14
  • DOI :https://doi.org/10.5389/KSAE.2023.65.1.061
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