Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study of the Cooling Effect of an Evaporation-Type Cool Roof Fan

기화방열식 Cool Roof Fan의 냉풍효과에 대한 연구

  • Kim, Yeong Sik (DAE SUNG AIR TECH. Co.) ;
  • Chung, Hanshik (Department of Energy and Mechanical Engineering, Institute of Marine Industry, Gyeongsang Nat'l Univ.) ;
  • Jeong, Hyomin (Department of Energy and Mechanical Engineering, Institute of Marine Industry, Gyeongsang Nat'l Univ.) ;
  • Choi, Soon-Ho (Department of Energy and Mechanical Engineering, Institute of Marine Industry, Gyeongsang Nat'l Univ.)
  • 김영식 (대성에어테크) ;
  • 정한식 (경상대학교 에너지기계공학과, 해양산업연구소) ;
  • 정효민 (경상대학교 에너지기계공학과, 해양산업연구소) ;
  • 최순호 (경상대학교 에너지기계공학과, 해양산업연구소)
  • Received : 2015.09.01
  • Accepted : 2016.01.18
  • Published : 2016.03.01
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Abstract

The ventilation effect of a ventilation system, which is classified as the forced ventilation and natural ventilation, is predominantly dependent on the combination of air supply and discharge. Perhaps the simplest ventilation is merely supplying the air as it is. However, to improve the indoor working environment during the summer, an air supply that is cooled to some extent has been widely adopted. Recently, a cooling method utilizing the vaporization of water was introduced. In this study, the performance of an evaporation-type air supply unit that was produced by Japan K-company and was installed in a shoe-manufacturing plant in Busan was investigated. The purpose of the experiment was to measure how much the supplied air could be cooled. From this experimental study, we confirmed that the evaporation-type air supply system is efficient, capable of improving the working environment during the summer while minimizing the energy cost.

환기는 자연환기와 강제환기로 분류되며, 최근에는 하절기에 작업장의 환경개선을 위해 냉각된 공기를 공급하는 환기를 적용하는 경우가 많아지고 있다. 하지만 대규모의 작업장에 냉각된 공기를 공급하기 위해서는 많은 에너지가 필요하며, 이를 보완하기 위해 물의 증발열을 이용하여 공기를 냉각시킨 후 공급하는 환기장치의 도입사례가 증가하고 있으며, 본 실험연구는 부산의 모 신발공장에 실제 적용된 기화방열식 환기장치의 성능을 평가한 사례연구로서 하절기에 외부의 대기온도에 대해 어느 정도의 냉각능력을 구현할 수 있는지 측정하였다. 실험결과로부터 하절기에 약 $6{\sim}7^{\circ}C$ 정도의 냉각효과를 구현하지만 급기의 상대습도가 매우 높아짐을 정량적으로 측정할 수 있었다. 실험결과에 의하면 기화방열식 전체환기 설비가 타방식과 비교하여 작동방식이 단순하며, 에너지 소비가 적은 경제적인 냉각설비이며, 급기의 습도 제어기능만 부가되면 매우 효율적인 환기 - 냉각기능을 동시에 수행할 수 있는 설비임을 확인하였다.

Keywords

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