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An Experimental Study of the Air-side Particulate Fouling of Finned-Tube Heat Exchangers of Air Conditioners by using Accelerated Particle-Loading System  

안영철 (부산대학교 기계공학과)
조재민 (부산대학교 기계공학과)
이재근 (부산대학교 기계공학과)
이현욱 (LG전자 디지털 어플라이언스 사업본부 연구소)
안승표 (LG전자 디지털 어플라이언스 사업본부 연구소)
윤덕현 (LG전자 디지털 어플라이언스 사업본부 연구소)
하삼철 (LG전자 디지털 어플라이언스 사업본부 연구소)
강태욱 (LG전자 에어컨 사업부)
옥주호 (LG전자 에어컨 사업부)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.15, no.10, 2003 , pp. 802-808 More about this Journal
Abstract
The air-side particulate fouling of the HVAC heat exchangers degrades the performance of cooling capacity, pressure drop across a heat exchanger, and indoor air quality. The purpose of this study is to investigate the fouling characteristics using accelerated particle loading system. The fouling characteristics are analyzed as functions of a dust concentration, a face velocity and a wet or dry surface condition. The pressure drop increases with increasing test operation and reaches constant asymptotic level. For the saturated condition due to particle loading, the pressure drop across the slitted finned-tube heat exchangers at the face velocity of 1 m/sec increases up to 57% and the cooling capacity decreases about 2%. The cooling capacities are not affected greatly by the presence of the fouling deposits if the thickness of the fouling deposits can not change substantially the flow pattern through the fins.
Keywords
Heat exchanger; Particulate fouling; Pressure drop; Cooling capacity; Air conditioner;
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