制冷技术2023，Vol.43Issue(4)：14-21,8.DOI:10.3969/j.issn.2095-4468.2023.04.103
直流道印刷电路板式换热器过渡区传热与流动特性实验研究
Experimental Study on Heat Transfer Performance and Flow Characteristics in Transition Region of Printed Circuit Heat Exchanger with Straight Flow Channel
摘要
Abstract
In this paper,a straight flow channel printed circuit heat exchanger(PCHE)with 600 mm×80 mm×80 mm overall dimensions,1.5 mm plate thickness,0.9 mm channel radius is developed.The total heat transfer coefficient U and fanning friction factor f under typical operating conditions are obtained through heat transfer performance and flow characteristics tests,and are compared with the classical formula.The results show that when Re between 1 400 and 4 792,the average deviation between the predicted results of formulas and the test results of PCHE prototype is within 8.8%,which can better predict the heat transfer performance of PCHE in the transition region;the average deviation between formulas and the test results of fanning friction factor f under cold test is about 9%,which can predict the resistance performance of PCHE.Compared with the cold test result,the Fanning friction factor of the hot test result is larger,which needs further correction.关键词
印刷电路板式换热器/传热与流动特性/过渡区Key words
Printed circuit heat exchanger/Heat transfer and flow characteristics/Transition region分类
通用工业技术引用本文复制引用
刘孝根,陈永东,韩冰川,于改革,邹宏伟,张明然..直流道印刷电路板式换热器过渡区传热与流动特性实验研究[J].制冷技术,2023,43(4):14-21,8.基金项目
安徽省自然科学基金(No.2008085QE261),合肥通用机械研究院有限公司博士科技基金(No.2020011748),安徽省重点研究与开发(No.202104a05020024),国机集团重大科技专项(No.ZDZX2021-1). （No.2008085QE261）
