Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Heat Transfer Characteristics of Fin-Tube Heat Exchanger Coated with FAPO Zeolite Adsorbent at Different Operating Conditions

FAPO 제올라이트 흡착제 코팅을 통한 핀-관 열교환기 운전조건별 열전달 성능특성

  • Jeong, Chul-Ki (Department of Mechanical Engineering Graduate school, Korea University) ;
  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University) ;
  • Bae, Kyung-Jin (Thermal & Fluid system R&D Group, Korea Institute of Industrial Techology) ;
  • Cha, Dong-An (Thermal & Fluid system R&D Group, Korea Institute of Industrial Techology) ;
  • Kwon, Oh-Kyung (Thermal & Fluid system R&D Group, Korea Institute of Industrial Techology)
  • 정철기 (고려대학교 기계공학과 대학원) ;
  • 김용찬 (고려대학교 기계공학과) ;
  • 배경진 (한국생산기술연구원 열유체시스템그룹) ;
  • 차동안 (한국생산기술연구원 열유체시스템그룹) ;
  • 권오경 (한국생산기술연구원 열유체시스템그룹)
  • Received : 2017.05.04
  • Accepted : 2017.06.13
  • Published : 2017.06.30
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Abstract

In conventional adsorption chamber, adsorbent is embedded in between heat exchanger fins by wire mesh. This method impedes heat and mass transfer efficiency. So in this study, to improve the heat transfer performance of heat exchanger, a fin-tube exchanger was coated with FAPO (Ferroaluminophosphate) zeolite adsorbent. The fin-tube heat exchanger has a fin pitch of 1.8 mm with a variation of adsorbent coating thickness of about 0.1 mm, 0.15 mm and 0.2 mm. By varying cooling water temperature and chilled water temperature respecively, heat transfer rate and overall heat transfer coefficient were investigated. As a result, the heat transfer rate and overall heat transfer coefficient increase with decreasing cooling water temperature and increasing chilled water temperature. Under the basic conditions, the heat transfer rate of heat exchanger with 0.2 mm coating thickness is 11% and 43% higher than that of 0.1 mm and 0.15 mm, respectively. The overall heat transfer coefficient is $189.1W/m^2{\cdot}^{\circ}C$, it is two times lager than that of 0.1 mm.

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References

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