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

被引：0
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作者：
Danilova, G.N.
Dyundin, V.A.
Borishanskaya, A.V.
Soloviyov, A.G.
Vol'nykh, Yu.A.
Kozyrev, A.A.
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来源：
Heat transfer. Soviet research | 1990年 / 22卷 / 01期
关键词：
Evaporators--Tubes - Heat Transfer--Tubes;
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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.
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页码：56 / 65
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