Effect of surface conditions on boiling heat transfer of refrigerants in shell-and-tube evaporators

被引：0

作者：

Danilova, G.N.

Dyundin, V.A.

Borishanskaya, A.V.

Soloviyov, A.G.

Vol'nykh, Yu.A.

Kozyrev, A.A.

机构：

来源：

Heat transfer. Soviet research | 1990年 / 22卷 / 01期

关键词：

Evaporators--Tubes - Heat Transfer--Tubes;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Experimental results are presented for the boiling heat transfer performance of R 22 and R 717 on surfaces with porous metallized coatings. A calculational-theoretical model is given for predicting the heat transfer of refrigerants boiling on a bundle of finned tubes. The results of the experiments are given. On all of the specimens with coatings an increase in the coefficient of heat transfer α from 2 to 5 fold as compared with that for a smooth surface αsm was observed. For R 22 the effect of the heat flux density on the heat transfer for tubes with coatings turned out to be weaker than for a smooth surface.

引用

页码：56 / 65

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