Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Evaluation on Heat Exchange Effectiveness and System Energy Usage according to Occurrence of Cooling Coil Fouling

냉방코일의 오염 발생에 따른 열교환 유용도 및 시스템 에너지 사용량 평가

  • San Jin (Student, Dept. of Building and Plant Engineering, Hanbat University) ;
  • Seungmin Jang (Student, Dept. of Building and Plant Engineering, Hanbat University) ;
  • Byeungyong Park (Dept. of Building and Plant Engineering, Hanbat University) ;
  • Jinkyun Cho (Dept. of Building and Plant Engineering, Hanbat University) ;
  • Sung Lok Do (Dept. of Building and Plant Engineering, Hanbat University)
  • 진산 (한밭대학교 건축설비공학과) ;
  • 장승민 (한밭대학교 건축설비공학과) ;
  • 박병용 (한밭대학교 설비공학과) ;
  • 조진균 (한밭대학교 설비공학과) ;
  • 도성록 (한밭대학교 설비공학과)
  • Received : 2022.12.21
  • Accepted : 2023.04.17
  • Published : 2023.05.30
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Abstract

A heating surface of a coil is exposed to various environments contaminated by various materials such as dust, scaling, and others over time. This phenomenon that contaminants attach and accumulate little by little on the heating surface of the coil is called fouling. Fouling involves contaminants of the inner and outer surfaces of the coil by adhering particulates and sediments. Fouling generates a thermal resistance layer on the coil, this layer decreases the heat exchange effectiveness of the coil. Eventually, this phenomenon leads to a reduction in performance and increases the energy usage of the HVAC system. Therefore, this study evaluated the heat exchange effectiveness and HVAC system energy usage to analyze the effect of the fouling on the HVAC system. To achieve this, a building energy simulation was conducted by assuming a situation in which fouling occurred. As a results, the heat exchange effectiveness decreased over time. The inner surface fouling had a greater effect on the decrease in effectiveness and the increase in energy usage than the outer surface fouling.

Keywords

Acknowledgement

이 논문은 2023년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2021R1C1C1010231).

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