天然气型冷热电联供系统应用分析

阐述了天然气驱动的冷热电联供(CCHP)系统的形式和特点,比较分析了使用天然气的冷热电联供系统与常规冷热电分供系统的一次能源利用率,指出联供系统可提高能源利用率,节约一次能源20％～30％。燃气内燃机型冷热电联供系统的回收期比燃气轮机型冷热电联供系统的回收期短,但能源利用率较低。文章从经济性角度 (回收期)分析了天然气和电力价格对冷热电联供系统推广应用的影响。

Application of Combined Cold, Heat and Power System Driven by Natural Gas

The system of combined cold, heat and power (CCHP) driven by natural gas and its features is expounded. Primary energy ratio (PER) is used to analyze and compare the energy utilization ratio of combined cold, heat and power system with conventional separate systems of cold, heat and power. The results show that the combined cold, heat and power system can improve energy utilization ratio and primary energy saving is about 20%-30 %. The payback period of CCHP system driven by gas engine is shorter than that of CCHP system driven by gas turbine, but PER of CCHP system driven by gas engine is lower than that of CCHP system driven by gas turbine. The effect of natural gas price and electric power price on the economics (payback period) of the combined cold, heat and power system is analyzed in this work.