GENERAL CORRELATION FOR HEAT-TRANSFER DURING FILM CONDENSATION INSIDE PIPES

被引：1186

作者：

SHAH, MM

机构：

[1] Port Jefferson Station, NY 11776

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1979年 / 22卷 / 04期

关键词：

D O I：

10.1016/0017-9310(79)90058-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A simple dimensionless correlation for predicting heat-transfer coefficients during film condensation inside pipes is presented. It has been verified by comparison with a wide variety of experimental data. These include fluids water, R-11, R-12, R-22, R-113, methanol, ethanol, benzene, toluene, and trichloroethylene condensing in horizontal, vertical, and inclined pipes of diameters ranging from 7 to 40mm. One data set for condensation inside an annulus has also been analyzed. The range of parameters covered includes reduced pressures from 0.002 to 0.44, saturation temperatures from 21 to 310°C, vapor velocities from 3 to 300m/s, vapor qualities from 0 to 100%, mass flux 39000-758 000kg/m2 h, heat flux from 158 to 1 893000W/m2, all liquid Reynolds numbers from 100 to 63 000, and liquid Prandtl numbers from 1 to 13. The mean deviation for the 474 data points analyzed was found to be 15.4%. © 1979.

引用

页码：547 / 556

页数：10