HEAT-TRANSFER THROUGH FALLING FILM EVAPORATION AND BOILING ON HORIZONTAL TUBES

被引：160

作者：

PARKEN, WH ^{[1
]}

FLETCHER, LS ^{[1
]}

SERNAS, V ^{[1
]}

HAN, JC ^{[1
]}

机构：

[1] NBS,MECH SYST SECT,WASHINGTON,DC 20234

来源：

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 1990年 / 112卷 / 03期

关键词：

Boiling; Evaporation;

D O I：

10.1115/1.2910449

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Evaporation and boiling heat transfer coefficients are presented for thin, distilled water films flowing over the outside of horizontal, electrically heated brass tubes. Tests were conducted with a thin-slot water distribution system for 2.54- and 5.08-cm-dia smooth tubes. Both local and average heat transfer data were obtained for nonboiling and boiling conditions corresponding to feedwater temperatures ranging from 49 to 127 ° C and heat-flux values ranging from 30 to 80 kW/m2. Feedwater flow rates ranged from 0.135 to 0.366 kg/s per meter length per side of the tube. Both nonboiling and boiling correlations of the average heat transfer coefficients were developed and compared. © 1990 by ASME.

引用

页码：744 / 750

页数：7

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