Cost-effectiveness Analysis of a BCHP(Building Cooling,Heating and Power) System by Using an Incremental Method

On the basis of a comparison with the traditional energy source system versions,proposed was an incremental method for evaluating the cost-effectiveness of a BCHP(building cooling,heating and power) system.As a result,man-made interference factors,such as the heat and cooling energy prices etc.can be avoided,making the evaluation of the cost-effectiveness of the BCHP system more objective.In addition,the authors have also conducted a case analysis of the cost-effectiveness of the BCHP system employed on campuses.The results of the analysis indicate that a host of factors,such as the maximum utilization hours,operation efficiency,energy price and system capacity etc.,exercise a major influence on the cost-effectiveness of a "cooling,heating power supply" cogeneration system.One is further led to believe that because such facilities,as stadiums and assembly halls etc.are characterized by few utilization hours and residential housings feature a low kilowatt-hour price,it is inappropriate for users of this category to employ the BCHP system.A proper capacity is favorable for enhancing the cost-effectiveness of the BCHP system.