The features of the Cold Source Recovery Method are listed as in the following:1) the inherent relation-ship between the heat content method and the enthalpy drop method has been revealed;2) the cost-sharing in co-generation of heat and electricity is determined from objective conditions;3) the choice of steam-extracting parameters is helpful to energy-saving and emission-reducing;4) make the cost-sharing in co-generation of heat and electricity to be clear.Combined with analysis and calculation in one actual engineering project

it shows that the active cost has to be shared according to the cold source recovery method

and under prerequisite of satisfying the heat utilization parameters of users

the lower the steam-extracting parameters the better;the fixed cost can be shared by adopting the annual average output reducing method;the annual fixed cost can be calculated using annual expense method.Thus

the low-temperature heat energy can more better be utilized

and reasonably be calculated.