설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)

  • 제22권7호
  • /
  • Pages.482-491
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  • 2010
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  • 1229-6422(pISSN)
  • /
  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

열교환기를 사용한 냉각/재가열 장치의 에너지 절감에 관한 연구

A Study on the Energy Saving of Cooling/Reheating System Using Heat Exchanger

  • 김진혁 (한국과학기술원 기계공학과) ;
  • 유성연 (충남대학교 BK21 메카트로닉스사업단) ;
  • 최양규 (충남대학교 BK21 메카트로닉스사업단)
  • Kim, Jin-Hyuck (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Yoo, Seong-Yeon (BK21 Mechatronics Group, Chungnam National University) ;
  • Choi, Yang-Kyu (BK21 Mechatronics Group, Chungnam National University)
  • 투고 : 2010.03.22
  • 발행 : 2010.07.10
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초록

In conventional air-handling units, when the circulated air from the air-conditioned space pass through the cooling coil, the air is over-cooled to eliminate the moisture as well as to decrease the temperature. The purpose of this study is to estimate the thermal performance and energy saving of the cooling/reheating system using heat exchanger which can save both cooling energy and reheating energy by exchanging heat between the cooled air and reheated air. The energy balance equations to estimate the state of the air for each components were provided and the heat transfer rates and the energy saving rates for the system were calculated from the equations. The results showed that the energy saving was up to 40% under present conditions, and saving rates were significantly affected by the air velocity, inlet conditions and the effectiveness of heat exchanger.

키워드

참고문헌

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