To construct a low-temperature return water cogeneration heating system with multiple units

the impact of external conditions such as urban heating demand

absorption heat stations

and peak shaving heat source settings on system construction was analyzed.The effects of conventional heating system parameters

including design heat load

supply and return water temperatures

and circulating water volume

as well as special parameters such as heating steam stages

maximum design back pressure

and minimum water supply temperature

on system energy efficiency were studied.The distribution and optimization methods of heating parameters for multiple units were also studied.The optimal design maximum back pressure value for unit energy efficiency was discovered.A parameter optimization distribution method for multi-unit heating systems with exergy efficiency as the goal was proposed.It was suggested that increasing the design maximum back pressure

increasing the number of heating stages

and balancing the exhaust steam heat supply of each unit within a certain range can improve the system's exergy efficiency.