煤气与热力

结合算例,通过改变公共建筑供热(冷)面积占比、可再生能源利用设备装机容量占比,以实现目标财务内部收益率为目标,对燃气锅炉耦合浅层地埋管地源热泵、中深层地埋管地源热泵、污水源热泵、空气源热泵、数据中心余热水源热泵等耦合供热系统的经济性进行分析,测算耦合供热系统可承受的绿电电价。在设定条件下,燃气锅炉+污水源热泵、燃气锅炉+数据中心余热水源热泵供热系统的经济性比较突出,燃气锅炉+空气源热泵供热系统经济性最差。从绿电电价承受能力出发,耦合供热系统的供能对象优先选取公共建筑,且采用冷热同供方式。

Combined with calculation examples,this paper analyzes the economic feasibility of coupled heating systems,including gas-fired boilers coupled with shallow-buried ground-source heat pumps,mediumdeep-buried ground-source heat pumps,sewage-source heat pumps,air-source heat pumps,and waste heat water-source heat pumps from data centers,by adjusting the proportion of heating(cooling) area of public buildings and the installed capacity proportion of renewable energy utilization equipment,with the target financial internal rate of return as the objective. It also calculates the tolerable green electricity price for these coupled heating systems. Under the set conditions,the heating systems combining gas-fired boilers with sewage-source heat pumps and gas-fired boilers with waste heat water-source heat pumps from data centers demonstrate outstanding economic performance,while the heating system combining gas-fired boiler with air-source heat pump system has the poorest economic performance. From the perspective of green electricity price affordability,public buildings are prioritized as the energy supply targets of coupled heating systems,and a combined cooling and heating supply mode is recommended.