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Evaluation of Air-side Friction Characteristics on Design Conditions of Slit Fin and Tube Heat Exchanger  

Cho, Sung-Chul (Plant Div., LOTTE Engineering&Construction)
Kim, Chang-Duk (Cluster Promotion Team, Korea Industrial Complex Corp.)
Kim, Chang-Eob (Department of Electrical Engineering, Hoseo University)
Kwon, Jeong-Tae (Department of Mechanical Engineering, Hoseo University)
Lim, Hyo-Jae (Department of Mechanical Engineering, Hoseo University)
Publication Information
Journal of Energy Engineering / v.16, no.3, 2007 , pp. 149-154 More about this Journal
Abstract
An experimental study on the air-side pressure drop of slit fin-tube heat exchanger has been carried out. The data reduction methodology for air-side pressure drop in the literature is not based on a consistent approach. This paper focuses on 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 pressure drop estimation in fin-tube heat exchanger. A comparison was made between the predictions of previously proposed empirical correlations and experimental data for the air-side pressure drop on design conditions of condenser and evaporator. Results are pre-sented as plots of friction f-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 $150{\sim}250\;kg/m^2s$ with air flows at velocity ranges from 0.38 m/s to 1.6 m/s.
Keywords
Slit fin-tube heat exchanger; Air-side; f-factor; Evaporator; Condenser; Pressure drop;
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