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Evaluation of Air-side Heat Transfer and Friction Characteristics on Design Conditions of Evaporator  

김창덕 (㈜센추리 기술연구소)
이진호 (연세대학교 기계공학과)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.15, no.12, 2003 , pp. 1007-1017 More about this Journal
Abstract
An experimental study on the air-side pressure drop and heat transfer coefficient of slit fin-tube heat exchanger has been carried out. The data reduction methodology for air-side heat transfer coefficients in the literature is not based on a consistent approach. This paper focuses on new method of data reduction to obtain the air-side performance of fin-tube heat exchanger using R22 and recommends standard procedures for dry and wet surface heat transfer estimation in fin-tube heat exchanger having refrigerant on the tube-side. Results are presented as plots of friction f-factor and Colburn j -factor against Reynolds number based on the fin collar outside diameter and compared with previous studies. The data covers a range of refrigerant mass fluxes of 150∼250 kg/$m^2$s with air flows at velocity ranges from 0.3 m/s to 0.8 m/s.
Keywords
Slit fin-tube heat exchanger; Pressure drop; Heat transfer coefficient; Wet surface;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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