The water source heat pump air-conditioning system of the training center of a bank was adopted as reference to introduce the calculation and design of underground water source system and heat recovery system. Also, the system’s energy consumption and economical efficiency were analyzed compared with the traditional water cooled screw chiller and gas boiler system. The results presented high economic benefits as well as energy-saving and environment protection benefits of the water source heat pump heat recovery system. The system is worth of promotion.%以某银行培训中心水源热泵空调系统为例，介绍其地下水源系统和热回收系统的计算与设计。把该系统与传统的水冷螺杆式冷水机组加燃气锅炉系统进行能耗与经济性对比分析，结果表明，水源热泵热回收系统具有较高的经济和节能环保效益，值得推广。
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