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文章编号： 1672-6987（2020）05-0102-07； DOI： 10.16351/j.1672-6987.2020.05.014
郭雨， 顾宗保， 张传财， 何燕， 张斌， 李蔚*
(青岛科技大学 机电工程学院，山东 青岛 266061)
摘要： 实验研究制冷剂R134A和R410A在光管与不锈钢三维强化管(1EHT,3EHT)管内冷凝蒸发换热特性。实验条件：选取具有相同外径1588 mm的光管与强化管（1EHT,3EHT）,其中：1EHT表面结构是由一系列凹坑与花瓣组成，3EHT则是由矩形腔组成，在冷凝实验饱和温度为31815 K，进出口干度为08和02；蒸发实验饱和温度为27915 K，进出口干度为01和06，分别进行实验。结果表明：对于蒸发和冷凝，1EHT具有最佳的换热性能，并且3EHT的换热性能优于光管。
关键词： 两相流； 传热； 蒸发； 冷凝； 三维强化管
中图分类号： TK 124文献标志码： A
引用格式： 郭雨， 顾宗保， 张传财， 等. 不锈钢三维强化管管内流动沸腾与冷凝传热实验\[J\]. 青岛科技大学学报（自然科学版）， 2020， 41（5）： 102-108.
GUO Yu, GU Zongbao, ZHANG Chuancai, et al. Experiments on flow boiling and condensation heat transfer in stainless steel three-dimensional enhanced tubes\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2020， 41（5）： 102-108.
Experiments on Flow Boiling and Condensation Heat Transfer in
Stainless Steel Three-dimensional Enhanced Tubes
GUO Yu, GU Zongbao, ZHANG Chuancai, HE Yan, ZHANG Bin, LI Wei
(College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China)
Abstract: An experimental investigation of condensation and evaporation heat transfer characteristics was performed in a smooth tube and two enhanced tubes (1EHT, 3EHT) using R134A and R410A as refrigerant. All tested tubes have the same outer diameter of 15.88 mm. The enhanced surface of the 1EHT tube is made up by dimples and a series of petal arrays, while that of 3EHT tube is rectangular cavities. The test runs are performed at a saturation temperature of 318.15 K, over the quality range of 0.8—0.2 for condensation and at a saturation temperature of 279.15 K, over the quality range of 0.1—0.6 for evaporation. For evaporation and condensation, the 1EHT tube provides the best heat transfer performance, and the heat transfer characteristics of 3EHT is better than that of smooth tube. This is mainly due to the dimples and rectangular cavities that increase heat transfer surface area and interface turbulence, producing additional disturbances, secondary flows near the boundary and flow separation. Similarly, the pressure drop of 1EHT is the largest, and the pressure drop of 3EHT is greater than that of the smooth tube.
Key words: two-phase flow; heat transfer; evaporation; condensation; three-dimensional enhanced tube
收稿日期： 2019-08-22
基金项目： 浙江省自然科学基金项目(LY19E060004).
作者简介： 郭雨(1995—),女,硕士研究生.*通信联系人.
