基于不同Kalina循环的三种冷热电联供系统的热力学与热经济学分析

以地热为热源，分别以KCS⁃11、KCS⁃34和KSG⁃1作为底循环，针对闪蒸⁃Kalina循环与吸收式制冷循环结合的三种冷热电联供系统（F⁃KCS11⁃ARC、F⁃KCS34⁃ARC、F⁃KSG1⁃ARC），进行了热力学和热经济学性能对比分析。结果表明，F⁃KCS11⁃ARC系统的总㶲损比F⁃KCS34⁃ARC系统和F⁃KSG1⁃ARC系统分别低5.3%和2.7%，其㶲损最大的组件是换热器1。F⁃KCS34⁃ARC系统的热效率最高，但地热源温度为155～220 ℃时，F⁃KCS11⁃ARC系统的热回收效率最大，且较小的地热源温度和闪蒸压力能使该系统获得更高的热回收效率。热经济学分析表明，泵1在三个系统中是成本最高的组件，其次为汽轮机2。F⁃KCS11⁃ARC系统的成本最低，年净收入最高，而且投资回收年限最小，其值分别为2.09×106美元、6.61×105美元和3.72 a。

Thermodynamic and Thermoeconomic Analysis of Three Systems Combined Cooling,Heating and Powerorganic Based on Different Kalina Cycles

Taking geothermal heat as the heat source,KCS-11,KCS-34 and KSG-1 as the bottom cycles respectively,the thermodynamic and thermoeconomic performance of three systems combining flash-Kalina cycle and absorption refrigeration cycle(F-KCS11-ARC,F-KCS34-ARC,F-KSG1-ARC)were compared and analyzed.The results show that the total exergy loss of the F-KCS11-ARC system is 5.3%and 2.7%lower than that of the F-KCS34-ARC system and the F-KSG1-ARC system,respectively,and the component with the largest exergy loss is the heat exchanger 1.The F-KCS34-ARC system has the highest thermal efficiency,but the F-KCS11-ARC system has the highest heat recovery efficiency when the geothermal source temperature is in the range of 155~220°C,and the smaller geothermal source temperature and flash pressure can make the system obtain higher heat recovery efficiency.Thermal economic analysis shows that pump 1 is the most expensive component in all three systems,the next is steam turbine 2.The F-KCS11-ARC system has the lowest cost,the highest annual net income,and the smallest investment recovery period,with values of 2.09×10^6$,6.61×10^5$and 3.72 years,respectively.