Flow boiling heat transfer characteristics of microchannels with different corrugated wall surfaces

被引：0

作者：

Luo X. ^{[1
]}

Hou Q. ^{[1
]}

Wang M. ^{[1
]}

Yang W. ^{[1
]}

机构：

[1] School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2021年 / 52卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Corrugated wall; Flow boiling; Heat transfer; Microchannels;

D O I：

10.11817/j.issn.1672-7207.2021.09.036

中图分类号：

TK1 [热力工程、热机];

学科分类号：

080702 ;

摘要：

In order to investigate the flow boiling heat transfer characteristics of the microchannels with different corrugated wall surfaces, the sinusoidal and triangular wave wall microchannels with the same characteristic parameters were designed, and the general flat-bottom microchannel was used as the experimental control group.The flow boiling heat exchange experiment was carried out when the system pressure was 60 kPa and the inlet temperature of the heat exchange medium was 33 ℃ taking R141b as the experimental working medium. The results show that corrugated wall microchannels have advantages for flow boiling heat transfer, including the advance of the starting point(ONB) of supercooled boiling and the improvement of heat transfer performance. During the supercooled boiling heat transfer phase, the sine and triangular corrugated wall microchannels have the most significant heat transfer enhancement, which is 1.27 and 1.35 times higher than the normal microchannels, respectively. During the saturated boiling heat transfer phase, the heat transfer enhancement performance of microchannels on corrugated wall is closely related to the change of mass flow rate and heat flux. © 2021, Central South University Press. All right reserved.

引用

页码：3341 / 3352

页数：11

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