An improved model based on real gas state equation and fog formation for condensation heat and mass transfer

被引：6

作者：

Tan, Bing ^{[1
]}

Cai, Jiejin ^{[1
]}

机构：

[1] South China Univ Technol, Sch Elect Power, Guangzhou 510640, Peoples R China

来源：

NUCLEAR ENGINEERING AND DESIGN | 2021年 / 372卷

基金：

中国国家自然科学基金;

关键词：

Real gas state equation; Condensation heat and mass transfer; Free convection; Forced convection; TURBULENT VAPOR CONDENSATION; DIFFUSION LAYER MODEL; STEAM CONDENSATION; THERMAL-CONDUCTIVITY; NONCONDENSABLE GASES; FILM CONDENSATION; TRANSFER ANALOGY; VERTICAL TUBE; AIR; CONVECTION;

D O I：

10.1016/j.nucengdes.2020.110968

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

In order to predict the condensation heat transfer coefficient precisely, this work aimed at proposing a generalized model with a wide scope of parameters applicability, namely, we presented an improved model that can predict the condensation characteristics which based on heat and mass transfer analogy with consideration of gas compressibility factor, fog formation factor, film waviness factor, suction factor and eddy diffusion factor. The improved model is suitable for those conditions: low pressure condensation at plate-shape and curved-shape surface with natural/forced convection, high pressure condensation at curved shape surface with natural convection. The improved model shows good applicability with the scope of the pressure is up to 2 MPa and the non condensable (NC) gas mass fraction up to 90%. Six experimental databases (including 436 data) were chosen to validate this model. More than 97% of the results predicted by the improved model were within +/- 30% bands.

引用

页数：13

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