R1234ze(E)在水平管内流动沸腾换热特性的实验研究  

Experimental Study of Heat Transfer Characteristics of Refrigerant R1234ze(E) Flow Boiling inside Horizontal Tube

作　　者：郭潇扬 张华[1] 邱金友[1] 王袭[2] GUO Xiao-yang;ZHANG Hua;QIU Jin-you;WANG Xi(School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;Haier Group Technology Research and Development Center, Qingdao, Shandong 266101, 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]海尔集团技术研发中心,山东青岛266101

出　　处：《制冷技术》2016年第3期6-10,共5页Chinese Journal of Refrigeration Technology

基　　金：国家自然科学基金(No.51176124);国际科技合作项目(No.2012DFR70430)

摘　　要：近年来,低GWP值制冷剂R1234ze(E)(trans-1,3,3,3-tetrafluoropropene)作为R134a较为理想的替代品而被广泛关注。本文对R1234ze(E)在内径为8 mm水平圆管内流动沸腾换热特性进行实验研究,实验研究的流动沸腾换热的饱和温度为20°C,热流密度范围为(7.5~15)k Wm^(-2),质流密度范围为(200~400)kgm^(-2)s^(-1),入口干度0.075~0.785,并分析质流密度、热流密度以及干度对R1234ze(E)饱和流动沸腾换热系数的影响。将本实验结果同3种预估关联式进行比较,结果表明LIU等的关联式计算结果较优,预估值与75%的实验数据误差在±30%以内,平均偏差为23.9%。Over the past few years, more attention have been paid to the new low GWP refrigerant R1234ze(E),which is a kind of ideal alternatives of R134a. In the present experimental investigation, the flow boiling heattransfer characteristics of R1234ze(E) inside a horizontal tube with inner diameter of 8.0 mm have been measured.The experimental results were obtained over the saturation temperature of 20oC, heat fluxes ranging from 7.5 to15 kWm-2, mass fluxes ranging from 200 to 400 kgm-2s-1, and vapor qualities ranging from 0.075 to 0.785. Theinfluences of mass flux, heat flux and vapor quality on the heat transfer coefficients were analyzed. Theexperimental results of flow boiling heat transfer coefficients were compared with the calculated results of threecommonly used correlations. The results showed that the calculated results of Liu et al.'s correlation can providegood predictions, the deviations of 75% experimental results are found to be within ±30%, and the averagedeviations are found to be 23.9%.

关 键 词：R1234ze(E) 流动沸腾 传热关联式 水平圆管 

分 类 号：TB611[一般工业技术—制冷工程]