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

作　　者：刘鹏鹏 黄理浩[1,2] 陶乐仁 陈建红[3] LIU Pengpeng;HUANG Lihao;TAO Leren;CHEN Jianhong(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai 200093,China;Shanghai First Refrigerating Machine Co.,Ltd.,Shanghai 201901,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海市动力工程多相流动与传热重点实验室,上海200093 [3]上海第一冷冻机厂有限公司,上海201901

出　　处：《制冷技术》2023年第4期28-32,66,共6页Chinese Journal of Refrigeration Technology

基　　金：上海市动力工程多相流动与传热重点实验室(No.2019KJFZ201)。

摘　　要：本文对管外径分别为25.4 mm和19.05 mm同类型强化管管内换热性能进行了实验研究。结果表明:25.4 mm和19.05 mm强化管相对于光管换热的强化倍率分别为2.147和4.876;在入口水温恒定时,总传热系数与水侧传热系数均随水流量在0.6~1.4 m3/h范围内升高而增大,而制冷剂侧传热系数变化趋势与管径相关;在高流量,总传热系数与制冷剂侧传热系数随入口水温在11~16℃范围内升高逐渐降低,水侧传热系数随入口水温的升高变化不明显。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 

分 类 号：TS205[轻工技术与工程—食品科学] U295[轻工技术与工程—食品科学与工程]