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采用CFD数值模拟方法对单口和多口U型地埋管井三维稳态换热性能进行模拟研究,分析管内流速、地埋管进水温度、土壤温度以及管井数量等因素对地埋管井释热性能的影响。然后采用实验方法,测试多口地埋管井释热性能和土壤温度变化规律。最后研究得出管内流速、进水温度、土壤温度等因素对地埋管井释热性能的影响以及在实际运行工况下4口60 m地埋管井换热量和土壤温度变化规律。
The CFD numerical simulation method was used to simulate the three-dimensional steady state heat transfer performance of single-well and multi-well U-shaped tube wells. The effects of tube velocity, buried tube water temperature, soil temperature and the number of tube wells on the heat release performance of buried tube well Impact. Then the experimental method was used to test the heat release performance and soil temperature variation in multi-well borehole well. Finally, the influence of tube velocity, temperature of inlet water and soil temperature on the heat release performance of buried tube well was obtained. The rule of heat transfer and soil temperature of 4 60 m buried tube wells under actual operating conditions was also obtained.