文献类型：期刊文献

英文题名：Comprehensive performance analysis of two internal threaded tube and different helical angle fins heat-exchange facility

作者：Shen, Ao[1]; Shen, Daoming[2,3]; Gui, Chao[4]; Xia, Jinhong[4]; Xue, Songtao[2,5]

第一作者：Shen, Ao

通讯作者：Shen, Daoming

机构：[1] School of civil engineering, Northeast Forestry University, 150040, China; [2] College of Civil Engineering and Architecture, Xinxiang University, Henan, 453000, China; [3] Research institute of structural engineering and disaster reduction, Tongji University, Shanghai, 20092, China; [4] College of Civil Engineering and Architecture, Xinxiang University, Henan, 453000, China; [5] Department of Architecture, Tohoku Institute of Technology, Sendai, 982-8577, Japan

第一机构：School of civil engineering, Northeast Forestry University, 150040, China

年份：2021

卷号：83

期号：1

起止页码：97-112

外文期刊名：UPB Scientific Bulletin, Series D: Mechanical Engineering

收录：EI(收录号：20211610216017);Scopus(收录号：2-s2.0-85104019186)

基金：This work was supported by the National Natural Science Foundation of China (No. 41877251) and Research and practice project of higher education teaching reform in Henan Province (2019SJGLX463).

语种：英文

外文关键词：Drops - Entropy - Fins (heat exchange) - Pressure drop - Reynolds number - Transmissions

摘要：Two types of internal threaded tubes with the same fin base diameter and different fin helical angle were analyzed through heat transfer experimentation of flow condensing. In the paper, heat transfer ratio and heat transfer temperature difference, together with pressure drop and friction factor were utilized to evaluate the heat transfer performance and flow power consumption of working medium. Consequently, the per unit pressure drop of heat transfer ratio and entropy production were utilized to study the energy quality loss as well as the comprehensive performance of interchanger throughout heat transfer. Entropy increase mainly represented the irreversible loss throughout heat transfer, which was positively correlated to the thermal transmission temperature difference. Therefore, the thermal transmission entropy in the system also decreased as the saturation temperature decreased, while the Reynolds number and spiral angle of fins increased. ? 2021, Politechnica University of Bucharest. All rights reserved.