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  

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

作　　者：董师彤 潘振[1] 商丽艳[2] 周莉[2] Dong Shitong;Pan Zhen;Shang Liyan;Zhou Li(College of Petroleum Engineering,Liaoning Shihua University,Fushun Liaoning 113001,China;College of Chemistry,Chemical Engineering and Environmental Engineering,Liaoning Shihua University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001 [2]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2020年第2期64-72,共9页Journal of Liaoning Petrochemical University

基　　金：辽宁省博士科研启动基金计划项目(2019-BS-159)。

摘　　要：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[火用]损比F-KCS34-ARC系统和F-KSG1-ARC系统分别低5.3%和2.7%,其[火用]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2.09×10^6美元、6.61×10^5美元和3.72 a。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.

关 键 词：地热 热力学 热经济学 KALINA循环 吸收式制冷 

分 类 号：TK529[动力工程及工程热物理—热能工程]