A simulation program for evaluating a thermal performance considering a pressure drop of capillary tube

A simulation program is developed to analyze the heat transfer characteristics of multi-pass fin-tube evaporator that considers pressure drop inside a capillary-tube. The annular flow model, which is the most proper for two phase flow under the operation condition of evaporator, is applied for describing the pressure drop of capillary-tube. The length effect of capillary-tube with different air mal-distributions are described. The appropriate length distribution of capillary-tube, which can enhance the heat transfer performance of evaporator with different types of air velocity profiles, is indicated in this paper.??? ????????? 2011 ?????? ?????????????????? ???????????? ??????????????? ???????????????(2010T100200475)??? ????????? ?????? ????????? ?????? ?????? ?????????