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Prediction and Experiment of Pressure Drop of R22 and R134a on Design Conditions of Condenser  

Kang, Shin-Hyung (Department of Mechanical Engineering, Konyang University)
Byun, Ju-Suk (Yonsei Center for Clean Technology, Yonsei University)
Kim, Chang-Duk (Industry Academia Coop. Team, Korea Industrial Complex Corp)
Publication Information
Journal of Energy Engineering / v.15, no.4, 2006 , pp. 243-249 More about this Journal
Abstract
An experimental study on the refrigerant-side pressure drop of slit fin an tube heat exchanger has been carried out. A comparison was made between the predictions of previously proposed empirical correlations and experimental data for the pressure drop on design conditions of condenser in micro-fin tube for R22 and Rl34a. Experiments were carried out under the conditions of inlet refrigerant temperature of $60^{\circ}C$ and mass fluxes varying from $150\;to\;250\;kg/m^{2}s$ for R22 and Rl34a. The inlet air conditions are dry bulb temperature of $35^{\circ}C$, relative humidity of 40% and air velocity varying from 0.68 to 1.43 m/s. Experiments show that pressure drop for R134a was $22{\sim}22.6%$ higher than R22 for the degree of subcooling $5^{\circ}C$ For the mass fluxes of $200{\sim}250\;kg/m^{2}s$, the deviation between the experimental and predicted values for the pressure drop was less than ${\pm}20%$ for R22 and Rl34a.
Keywords
Condenser; Design condition; Fin and tube heat exchanger; Pressure drop; R22; R134a;
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Times Cited By KSCI : 1  (Citation Analysis)
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