制冷技术2023，Vol.43Issue(4)：28-32,66,6.DOI:10.3969/j.issn.2095-4468.2023.04.105
R410A在不同直径水平单管管内换热性能研究
Research on Heat Transfer Performance of R410A inside Horizontal Single Tubes with Different Diameters
摘要
Abstract
In this paper,the heat transfer performance of the same type strengthened pipes with the outer diameters of 25.4 mm and 19.05 mm is studied experimentally.The experimental results showed that the intensification ratios of 25.4 mm and 19.05 mm reinforced tubes to light tube heat transfer are 2.147 and 4.876 respectively.When the inlet water temperature is constant,both the total heat transfer coefficient and the water-side heat transfer coefficient increase with the water flow rising in the range of 0.6-1.4 m3/h,while the change trend of refrigerant side heat transfer coefficient is related to pipe diameter.At high flow rate,the total heat transfer coefficient and refrigerant side heat transfer coefficient gradually decrease with the increase of inlet water temperature in the range of 11-16℃,while the water side heat transfer coefficient does not change significantly with the increase of inlet water temperature.关键词
水平单管/Wilson图解法/强化换热Key words
Horizontal single tube/Wilson graphic method/Enhanced heat transfer分类
轻工纺织引用本文复制引用
刘鹏鹏,黄理浩,陶乐仁,陈建红..R410A在不同直径水平单管管内换热性能研究[J].制冷技术,2023,43(4):28-32,66,6.基金项目
上海市动力工程多相流动与传热重点实验室(No.2019KJFZ201). （No.2019KJFZ201）
