针对城市原生污水源热泵系统的特点,以费用年值为目标函数,建立了系统优化模型,并编制了计算程序。在保证机组安全可靠地满足建筑物冷热负荷需求的前提下,根据不同的污水温度,对系统关键设计参数进行了优化。结合实际算例,给出了系统的最优参数设计值,分析了个别参数对系统费用年值和性能的影响。该方法兼顾了运行的可靠性与经济性,可实现系统内各部件的最优匹配。 According to the characteristics of urban primary sewage source heat pump system, the system optimization model is established and the calculation program is prepared based on annual cost as the objective function. On the premise of ensuring the safety and reliability of the unit to meet the cooling and heating load requirements of the building, the key design parameters of the system are optimized according to different sewage temperatures. Combined with practical examples, the optimal design parameters of the system are given, and the influence of individual parameters on the annual cost and performance of the system is analyzed. The method takes into account the reliability and economy of operation, and achieves the optimal matching of various components in the system.