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摘要 通过热响应实验获得了世博轴地下土壤的初始温度及地埋管的换热性能。将数值模拟结果与实验结果进行对比，验证了数值模拟的准确性。通过数值模拟得到地埋管全年出口水温，并分析了地源热泵系统运行5年后的土壤温升。 关键词 世博轴 地源热泵 热响应实验 数值模拟 热平衡 Application research of ground source heat pump of World Expo Axis and Underground Complex By Li Kuishan, Wu Linghong, Liang Tao, Ye Dafa, Liu Jun and Zhang Xu Abstract Obtains the local initial soil temperature and the heat transfer performance of U-tube ground exchanger by thermal response experiments. Comparisons of the numerical results with those of experiments validate the accuracy of the numerical simulation. Calculates the temperature of water leaving the pipes and analyses the soil temperature rise after five years operation. Keywords World Expo Axis， ground-source heat pump， thermal response experiment， numerical simulation， heat balance