制冷学报2011，Vol.32Issue(4)：20-24,5.DOI:10.3969/j.issn.0253-4339.2011.04.020
R410A在内螺纹管内无润滑油沸腾换热实验研究
Experimental Study on Boiling Heat Transfer of R410A without Lubricant Oil in the Inner-grooved Copper Tubes
摘要
Abstract
In order to establish test-bench without oil, hydraulic diaphragm pumps are used for the power cycle in this study. The boiling heat transfer of environmentally friendly refrigerant R410A and R22 as working fluids in the horizontal and inner-grooved copper tubes (p5mm and p9.52mm) were investigated experimentally, and the boiling heat transfer performance of the two refrigerant was compared. The effect of refrigerant mass flow rate, changes of.external water flow rate and diameter of tubes on the pressure drop and heat transfer coefficient are analyzed. Experimental results show that heat transfer coefficient increases with the increase of water flow rate, and the size of diameter has greater impact on the heat transfer coefficient. In the same flow rate, heat transfer coefficient of the 9. 52mm tube is 1.32-7.22 times as the 5mm tube.关键词
工程热物理/R410A/内螺纹铜管/沸腾换热/性能/实验研究Key words
Engineering thermophysics/ R410A/ Inner-grooved copper tube/ Boiling heat transfer/ Performance/ Experimental study引用本文复制引用
刘荣,陶乐仁,高立博,薛维超,张玲玲,成简,张庆刚..R410A在内螺纹管内无润滑油沸腾换热实验研究[J].制冷学报,2011,32(4):20-24,5.基金项目
国家高技术研究发展计划(863计划,2008AA05Z204)资助项目. （863计划,2008AA05Z204）
