分级抽汽回热式太阳能低温有机朗肯循环系统的热力性能分析  

Thermodynamic Analysis of Graded Regenerative Extraction Low-temperature Power Generation Based on Solar-heated Organic Rankine Cycle

作　　者：韩中合[1] 叶依林[1] 王璟[1] 

机构地区：[1]华北电力大学,保定071003

出　　处：《汽轮机技术》2012年第2期81-85,共5页Turbine Technology

摘　　要：研究了分级抽汽回热式太阳能低温有机朗肯循环系统的热力性能。以R600和R245fa作为循环工质,利用热力学第一定律和第二定律,在不同的蒸发温度和膨胀比的条件下,对分级抽汽回热式系统和基本有机朗肯循环系统的热力性能变化进行比较和分析,指出分级抽汽回热式系统的热效率和效率更高,产生的不可逆损失更小,具有更优越的性能。The The performances of low-temperature power generation system are investigated based on the graded regenerative extraction Organic Rankine Cycle （ORC） driven by solar. R600 and R245fa are are chosen as the working fluids, thermodynamics analysis and comparison of graded regenerative ORC system and common ORC system are conducted by evaporation temperature and pressure ratio, based on the first law of thermodynamics and the second law of thermodynamics. The conclusion is that the graded regenerative extraction ORC system has higher thermal efficiency,higher second law efficiency, lower irreversible loss and better performance.

关 键 词：太阳能 有机朗肯循环 分级抽汽回热 不可逆损失 热效率 

分 类 号：TK514[动力工程及工程热物理—热能工程]