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采用现场试验的方法对上海自然博物馆地下连续墙内埋管的传热性能进行了试验研究,分析了埋管布置形式、循环水流速、进水温度和运行模式对换热效果的影响.试验结果表明:地下连续墙内埋管的布置形式和传热性能都与传统的地埋管有较大的不同;混凝土水化热对地下连续墙体的温度有较大影响;增大埋管的支管间距可以提高其换热效果;在试验工况下的单组埋管合理流速为0.6～0.9m/s,;地下连续墙内埋管的换热量随进水温度呈线性变化;采用间歇运行的模式,可以提高热交换系统的换热量.
The field test method was used to study the heat transfer performance of buried pipes in the underground continuous wall of Shanghai Museum of Natural History and the influence of heat pipe layout, circulating water flow rate, inlet water temperature and operating mode on the heat transfer performance was analyzed. It shows that the layout and heat transfer performance of buried pipe in underground diaphragm wall are all different from that of traditional buried pipe. The concrete hydration heat has a great influence on the temperature of underground continuous wall. The spacing can improve the heat transfer effect; the reasonable flow rate of single-group buried pipe under the test condition is 0.6-0.9m / s; the heat exchange capacity of buried pipe in underground continuous wall changes linearly with inlet water temperature; Mode, you can increase the heat exchange system heat transfer.