Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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An experimental study of the air-side particulate fouling in finned-tube heat exchangers of air conditioners through accelerated tests

공기조화기용 열교환기의 공기측 파울링 가속 특성 분석

  • 안영철 (부산대학교 기계공학과) ;
  • 조재민 (부산대학교 기계공학과) ;
  • 이재근 (부산대학교 기계공학과) ;
  • 이현욱 (LG 전자 디지털 어플라이언스 사업본부 연구소) ;
  • 안승표 (LG 전자 디지털 어플라이언스 사업본부 연구소) ;
  • 윤덕현 (LG 전자 디지털 어플라이언스 사업본부 연구소) ;
  • 강태욱 (LG 전자 에어컨 사업부) ;
  • 옥주호 (LG 전자 에어컨 사업부)
  • Published : 2003.04.23
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Abstract

The air-side particulate fouling in the heat exchangers of HVAC applications degrades the performance of cooling capacity, pressure drop across a heat exchanger, and indoor air quality. Indoor and outdoor air contaminants foul heat exchangers. The purpose of this study is to investigate the fouling characteristics trough accelerated tests. The fouling characteristics are analyzed as functions of a dust concentration (1.28 and 3.84 $g/m^3$), a face velocity (0.5, 1.0, and 1.5 m/s), and a surface condition. The cooling capacity in the slitted finned-tube heat exchangers at the face velocity of 1 m/s decreases about 2% and the pressure drop increases up to 57%. The rate of build-up of fouling is observed to be 3 times slower for this three-fold reduction of dust concentration whilst still approaching the same asymptotic level.

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