In order to solve the problem of the narrow working range of the thermo-electrolytic coupling of conventional condensing heating units,combined with a 300MW air-cooled unit,based on the first and second laws of thermodynamics,the energy flow diagrams and the exergy flow diagram of the condensing heating and absorption heat pump heating systems are drawn,and studied the thermal economic advantages of coupled absorption heat pump heating systems.The changes in the heating capacity,minimum electrical load and thermo-electrolytic coupling capacity of the coupled absorption heat pump heating system is studied.The conclusion shows that compared with the condensate heating system,the exergy efficiency of the heating process is increased by 15.3％,and the standard coal consumption for power generation is been reduced by 22.79 g/(kW·h),heating capacity is increased by 262.69MW;peak shaving depth is increased by 56.4 MW.The working area of the thermo-electrolytic coupling is significantly enlarged.The thermal economy and peak shaving advantages of the coupled absorption heat pump heating system from a theoretical point of view is analyzed,in order to provide a theoretical basis for the domestic thermal power flexibility transformation project.
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