天然气冷热电联供的热经济性分析

Thermal Economy Analysis of Natural Gas Cooling-heating Combined Power

用经济系数方法,对天然气冷热电联供系统、天然气发电系统和天然气热电联供系统进行分析,计算出三系统的经济系数,对其进行比较分析,指出天然气冷热电联供系统具有较高的热经济性。进一步对天然气价格进行灵敏度分析,得出三系统在不同天然气价格下的经济系数。

By a method of exergyeconomic coefficient, three different systems: coolingheatpower cogeneration system, combined heat and power system and power system were analyzed. The exergyeconomic coefficient for them were calculated. Based on the calculation, the conclusion that natural gas cogeneration system has higher thermal economical character was drawn. Further analysis on sensitivities of differenrt NG's prices results in the exergyeconomic coefficients under different prices for the three systems.