制冷学报2025，Vol.46Issue(2)：129-136,8.DOI:10.12465/j.issn.0253-4339.2025.02.129
热力能源隧道毛细管网换热器性能实验研究
Experimental Investigation on Performances of Capillary Mat Heat Exchangers in a Thermal Energy Tunnel
摘要
Abstract
Capillary mat heat exchangers are increasingly used in transportation energy tunnels owing to their large heat-transfer area and uniform temperature.Thermal energy tunnels,a new type of energy tunnel,differ from transportation energy tunnels because of the heat source inside such tunnels.To examine the feasibility of applying capillary mat heat exchangers in thermal energy tunnels under endothermic conditions,heat transfer performance was experimentally investigated using a 1∶1 intermittent operating mode.The results showed that the higher the initial air temperature(T0)in the tunnel,the greater the heat flux.With the inlet temperature of circulating water(tin)fixed at 5 ℃,as the temperature difference between T0 and tin increases by 10 ℃,the heat flux increases by 45.9％.The heat flux also increases with the increase of circulating water velocity(u);whereas u increases up to 0.1 m/s,the heat transfer rate saturates and approaches 187.22 W/m2.The lower the tin is,the greater the heat flux.When the T0 is 50 ℃ and the u is 0.075 m/s,for every 1℃ increase in the tin,the heat transfer rate decreases by 2.04％.关键词
热力能源隧道/隧道内空气温度/毛细管网换热器/换热性能Key words
thermal energy tunnel/tunnel air temperature/capillary mat heat exchanger/heat transfer performance分类
通用工业技术引用本文复制引用
王永艳,周国兵,刘军,王富强,乔国刚,黄辉..热力能源隧道毛细管网换热器性能实验研究[J].制冷学报,2025,46(2):129-136,8.基金项目
本文受北京市自然科学基金—海淀原始创新联合基金(L212068)和北京市自然科学基金(3192034)项目资助.(The project was supported by Beijing Municipal Natural Science Foundation-Haidian District Original Innovation Joint Fund(No.L212068)and Beijing Municipal Natural Science Foundation(No.3192034).) （L212068）
