多热源联合供热系统经济性及运行状况研究

Economy and Operation Status of Heating System with Multi-energy

多热源联合供热系统应用在供热技术中可以实现多能源的合理配置,以实际工程为例,介绍了污水源热泵燃气锅炉联合的多热源供热系统,另外设计单用污水源热泵方案、单用燃气锅炉方案,对比分析3种方案的初投资和运行费用,总结说明多热源系统的环保性、可靠性和经济性。另外总结污水源热泵供暖状态下的COP分别随着供水温度和污水温度变化的趋势,并分析燃气锅炉变负荷运行时燃气耗量与锅炉制热量的关系,最终计算得出多热源联合供热系统最佳运行方案。

Heating System with Multi -energy achieves the reasonable allocation of energies. Takingpractical work as an example, this paper introduces Heating System with Multi - energy of sewage sourceheat pump combined with gas boiler, with design schemes of sewage source heat pump and gas boiler. Theinitial investment and operating cost of three design schemes are analyzed and compared, explaining theenvironmental, reliable, cost of Heating System with Multi -energy. The variation of COP of sewagesource heat pump with water supply temperature and sewage temperature is summarized. Relationshipbetween gas consumption and boiler heat production is analyzed when gas boiler in variable loadoperation, as well as the optimum operation scheme of Heating System with Multi -energy.