Modeling of condensation heat transfer of pure refrigerants in micro-fin tubes

被引:35
|
作者
Chamra, LM [1 ]
Mago, PJ [1 ]
Tan, MO [1 ]
Kung, CC [1 ]
机构
[1] Mississippi State Univ, Dept Mech Engn, Mississippi State, MS 39762 USA
关键词
condensation; micro-fin tubes; heat transfer; pure refrigerant;
D O I
10.1016/j.ijheatmasstransfer.2004.10.005
中图分类号
O414.1 [热力学];
学科分类号
摘要
A new semi-empirical condensation model for heat transfer coefficient of pure refrigerants flowing inside micro-fin tubes is presented. The new model is developed based on a theoretical analysis of turbulent film condensation inside smooth tubes. Several modifications have been implemented in the original smooth-tube model to account for the heat transfer enhancement effects due to the presence of micro-fins on the internal wall surface. The new condensation model is compared with a set of around 400 experimental data points. The comparison shows that the new model is capable of producing consistent prediction results with a mean absolute deviation less than 20% for most of the available data sets. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1293 / 1302
页数:10
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