两种有机朗肯循环发电系统的性能分析  

PERFORMANCE ANALYSIS OF TWO ORGANIC RANKINE CYCLE GENERATION SYSTEMS

作　　者：李慧君[1] 王培毅[1] 范伟[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,保定071003

出　　处：《太阳能学报》2017年第6期1667-1673,共7页Acta Energiae Solaris Sinica

基　　金：基金项目:中央高校基本科研业务费(2014MS151)

摘　　要：针对有机朗肯循环(ORC)发电系统的广阔应用前景,建立无回热(BORC)和内回热(IHORC)有机朗肯循环系统的数学模型。在蒸发温度的变化下,对两系统的热效率、效率、电力生产成本及回收期进行分析;并确立一个由效率和电力生产成本构建的综合目标函数,以此分析系统的综合经济性;找出更适合不同的烟温的蒸发温度区间和系统。结果表明:在一定条件下,IHORC系统的热经济性较好,而BORC系统的经济性更优;在验证了综合目标函数能合理地兼顾热经济性和经济性的条件下,得出BORC和IHORC系统分别存在综合经济性更好的蒸发温度区间;且通过对不同烟温下两系统的性能比较,得出BORC系统更适合回收低温烟气,而IHORC系统回收高温烟气更有优势。Aiming at the broad application prospect of organic Rankine cycle （ORC） generation system, the mathematical models of ORC with and without internal heat regeneration （BORC and IHORC） were established. Thermal efficiency, exergy efficiency, electricity production cost and payback period of two systems for different evaporating temperatures were analyzed. And a comprehensive objective function consisted of exergy efficiency and electricity production cost was established to analyze the comprehensive economy of the systems and find the suitable evaporating temperature range and system for different gas temperature. The results show that the thermal economy of IHORC is better, while the economy of BORC is even better in certain condition. When the condition which both thermal economy and economy can be considered by the comprehensive objective function is verified, the existing suitable evaporating temperature ranges for better BORC and IHORC comprehensive economies are obtained, respectively. The performance comparison of two systems at different gas temperature shows that BORC is suitable for reclaiming low temperature gas and IHORC is suitable for reclaiming high temperature gas.

关 键 词：有机朗肯循环 热经济性 经济性 综合经济性 

分 类 号：TK115[动力工程及工程热物理—热能工程]