4.6 Article

Influence of surface roughness on a spray cooling system with R134a. Part I: Heat transfer measurements

期刊

EXPERIMENTAL THERMAL AND FLUID SCIENCE
卷 46, 期 -, 页码 183-190

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.expthermflusci.2012.12.010

关键词

-

资金

  1. Catedra Fundacion Antonio Aranzabal - University of Navarra

向作者/读者索取更多资源

Experimental measurements in a spray cooling test rig were carried out for two different heater surface roughnesses and for two different types of nozzles with the dielectric refrigerant R134a. In this paper, results of the heat transfer measurements are presented. The analysis of the results explains the influence of the volumetric flow rate, the surface roughness and the type of nozzle (through the spray parameters) on the spray cooling boiling curve, on the Nusselt number and on the efficiency. It has been found that the effect of a smooth roughness is to delay the onset of the nucleate boiling, but once this regime has started, boiling is so fast that the CHF (Critical Heat Flux) is reached at lower heater temperatures and lower heat fluxes. In a companion paper the sprayed refrigerant film thickness measurements and its relation with the heat transfer measurements are presented. (C) 2012 Elsevier Inc. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据