楼宇级冷热电联产系统的应用分析

针对一种应用于楼宇的冷热电联产系统(CCHP),从一次能源节约率(FESR)和经济性出发,对不同的发电功率配置方案进行对比,并考查“用户负荷跟随”和“全负荷”两种运行策略。计算结果表明,全负荷运行方式具有较好的节能性和经济性,冷热电联产系统发电功率过小或过大都不能达到节能目的,系统投资回收期在一定容量范围内相对稳定。天然气价格和电价对于不同容量的冷热电联产系统具有较大影响,但选择合适的发电机装机容量的系统可以减小这些因素的影响。

Analysis of CCHP System Applied in a Building

Based on one kind of CCHP applied in a building,related to the aspects of the fuel energy saving ratio(FESR) and economy,the different configurations of generate power were compared,also the operational strategies of PowerFollowing(PF) and Full-Load(FL) were discussed.It could be concluded that the FL strategy had higher FESR value and was more economical.In addition,for the CCHP with too large or too small generator power size,the purpose of energy saving could not be achieved;meanwhile,the Capital Payback Period(CPP) was comparatively steady at some extent.On the other hand,gas price and electric price had a great influence on different sizes of CCHP,but the CCHP with suitable generator power could reduce this influence.