PREDICTION OF CRITICAL HEAT-FLUX OF SUBCOOLED FLOW BOILING IN ROUND TUBES

被引：50

作者：

KATTO, Y

机构：

[1] Department of Mechanical Engineering, Nihon University, Chiyoda-ku, Tokyo, 101, Kanda-Surugadai

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1990年 / 33卷 / 09期

关键词：

D O I：

10.1016/0017-9310(90)90223-H

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Based on the liquid sublayer dryout mechanism, a physical model of critical heat flux (CHF) of subcooled flow boiling is presented in a previous paper with a rather tentative correlation of a coefficient k to link the velocity of a vapor blanket with that of two-phase flow. In the present paper, a new correlation of the velocity coefficient k is derived based on CHF data of various kinds of fluids, presenting a generalized method to predict CHF of subcooled flow boiling within the range of subcooling Tsat-TL≥0 K, void fraction α < 0.7, and vapor/liquid density ratio ρ{variant}v/g9L ≫ 0.01. Comparisons of predicted and measured CHF show fairly good accuracy up to high degrees of subcooling. © 1990.

引用

页码：1921 / 1928

页数：8

共 12 条

[1]

COFFIELD RD, 1969, NUCL ENG DES, V11, P143

[2] A NEW HYDRODYNAMIC MODEL OF CRITICAL HEAT-FLUX, APPLICABLE WIDELY TO BOTH POOL AND FORCED-CONVECTION BOILING ON SUBMERGED BODIES IN SATURATED LIQUIDS [J].