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Wilson plot기법을 이용한 2중관식 대향류 열교환기의 단상 열전달에 관한 연구

A study on the single-phase heat transfer in a counter-flow double-pipe heat exchanger by Wilson plot technique

엄기찬
한국태양에너지학회 (The Korean Solar Energy Society)|2006.12|한국태양에너지학회 논문집 (Journal of The Korean Solar Energy Society)|제26권 제4호|pp. 93-100

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참고문헌

키워드

열교환기(Heat exchanger)대향류(Counterflow)열전달(Heat transfer). 기 호 설 명
주제분류기타공학

초록

Abstract

An experimental study of a counterflow heat exchanger was performed. The heat exchanger had an effective heat transfer length of and was operated in a counterflow arrangement with hot water(30±0.5℃, ) in the inner tube(copper tube, ) and cold water(15±0.5℃, ) in the annulus(copper tube, ). Overall heat transfer coefficients were calculated and heat transfer coefficients in the inner tube and the annulus were determined using Wilson plots. The inner Nusselt number was compared with that of Gnielinski's correlation and they agreed within ±10% error. The trends were typical for a fluid-to-fluid heat exchanger with the overall heat transfer coefficient increasing with both inner and annulus flow rates. In the range of this experiment, Nusselt numbers for the inner tube flow were almost identical with those of the annulus flow at the same Reynolds number.

참고문헌 (16)

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