Optimization of Finned-Tube Heat Exchanger in a Gravity-Assisted Separated Heat Pipe
作者机构：Huadong Engineering Corporation LimitedPower Construction Corporation of ChinaHangzhou310014China Institute of Refrigeration and CryogenicsZhejiang UniversityHangzhou310027China
出 版 物：《Frontiers in Heat and Mass Transfer》 (热量和质量传递前沿（英文）)
年 卷 期：2024年第22卷第4期
页 面：1209-1229页
核心收录：
学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理]
基 金：supported by Archaeological Artifact Protection Technology Project of Zhejiang Province(NO2021013)
主 题：Separated heat pipe finned-tube heat exchanger gravity optimization
摘 要：Finned-tube heat exchanger(FTHE)is often used as an evaporator in commercial products of separated heat pipe(SHP).The working conditions of FTHE in gravity-assisted SHP are significantly different from those working in refrigerators and air *** FTHE is widely used in commercial products of SHP,previous research on its characteristics is very *** this paper,a mathematical model for a SHP with FTHE as the evaporator and plate heat exchanger as the condenser is established and verified with *** analyses are carried out to investigate the influences of evaporator design parameters:air inlet velocity,number of tube rows,tube diameter,and fin *** the increasing of air velocity,number of tube rows and tube diameter,and the decreasing of fin pitch,the heat transfer rate increases,while the energy efficiency ratio(EER)decreases *** the total cost of the ten-year life cycle as the performance index,the structure parameters of the evaporator with a given heat transfer rate are optimized by the method of orthogonal experimental *** is found that the total cost can differ as large as nearly ten times between *** the three factors investigated,the number of tube rows has a significant impact on the total cost of the *** more tube rows,the total cost will be *** impacts of fin pitch and tube diameter are *** results are of practical importance for the engineering design of FTHE in gravity-assisted SHP.
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