압력손실을 고려한 양돈시설의 반폐회로 환기시스템의 환기량 및 혼합비율 평가
Evaluation of Ventilation Rate and External Air Mixing Ratio in Semi-closed Loop Ventilation System of Pig House Considering Pressure Loss
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초록
The increase in the rearing intensity of pigs has caused deterioration in the pig house’s internal environment such as temperature, humidity, ammoniagas, 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 reduceodor 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 losscalculation and experiment were conducted for the quantitative ventilation design of a semi-closed loop system. The results of the experiment showedthat 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-closedloop ventilation system, it was appropriate to install a damper or a backflow prevention device rather than a ventilation fan.
Abstract
The increase in the rearing intensity of pigs has caused deterioration in the pig house’s internal environment such as temperature, humidity, ammoniagas, 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 reduceodor 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 losscalculation and experiment were conducted for the quantitative ventilation design of a semi-closed loop system. The results of the experiment showedthat 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-closedloop ventilation system, it was appropriate to install a damper or a backflow prevention device rather than a ventilation fan.
참고문헌 (20)
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