Analysis of low temperature solar thermal electric generation using regenerative Organic Rankine Cycle
Analysis of low temperature solar thermal electric generation using regenerative Organic Rankine Cycle
复制标题
再生式有机朗肯循环低温太阳能热发电分析
DOI：
10.1016/j.applthermaleng.2010.01.011
复制
发表时间：
2010-06
影响因子：
6.4
通讯作者：
Pei, Gang
中科院分区：
文献类型：
--
作者：
Li, Jing;Ji, Jie;Pei, Gang
设计了以小聚光比复合抛物面聚光器（CPC）和回热式有机朗肯循环（ORC）为核心的新型低温太阳能热发电系统。概述了创新配置的优点，例如有效降低传热不可逆性并允许使用相变材料（PCM）进行储热。采用分布参数法对该系统的传热和能量转换过程进行了数值模拟。然后分析了回热循环对集热器、ORC和总体电效率的影响。结果表明，回热循环对ORC效率有正的影响，但对集热器效率有负的影响，因为第一级集热器的平均工作温度升高。因此，有必要评估采用回热循环时的总体电效率。进一步的研究表明，有最大效率的ORC和系统发电的条件下，恒定的辐照度，蒸发温度和环境温度。并且系统电效率达到最大值时的回热温度比ORC效率达到最大值时的回热温度小12-21°C。因此，太阳能热发电的再生循环优化不同于单独ORC的再生循环优化。当辐照度为750 W/m2时，采用蓄热式ORC的系统电效率约为8.6%，比不采用蓄热式ORC的系统电效率提高了4.9%。
The innovative configuration of low temperature solar thermal electric generation with regenerative Organic Rankine Cycle (ORC) is designed, mainly consisting of small concentration ratio compound parabolic concentrators (CPC) and the regenerative ORC. Advantages of the innovative configuration such as effectively reducing heat transfer irreversibility and permitting the use of thermal storage with phase change materials (PCMs) are outlined. The numerical simulation of the heat transfer and power conversion processes are carried out based on distributed parameters. The effects of regenerative cycle on the collector, ORC, and overall electricity efficiency are then analyzed. The results indicate that the regenerative cycle has positive effects on the ORC efficiency but negative ones on the collector efficiency due to increment of the average working temperature of the first-stage collectors. Thus, it is necessary to evaluate the overall electricity efficiency when regenerative cycle is adopted. Further investigation shows that there are maximum efficiencies for both the ORC and the system electric generation on conditions of constant irradiance, evaporation temperature, and environment temperature. And the regenerative temperature at which the system electricity efficiency reaches its maximum is smaller than that at which the ORC efficiency reaches its maximum by 12–21°C. Thus, the regenerative cycle optimization of the solar thermal electric generation differs from that of a solo ORC. The system electricity efficiency with regenerative ORC is about 8.6% for irradiance 750W/m2and is relatively higher than that without the regenerative cycle by 4.9%.
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DOI：
10.1109/iecec.2002.1392137
发表时间：
2002-07
期刊：
IECEC '02. 2002 37th Intersociety Energy Conversion Engineering Conference, 2002.
影响因子：
--
作者：
T. Saitoh;A. Hoshi
通讯作者：
T. Saitoh;A. Hoshi
DOI：
10.1016/0890-4332(92)90041-f
发表时间：
1992-03
期刊：
Heat Recovery Systems and Chp
影响因子：
--
作者：
B. Mohanty;G. Paloso
通讯作者：
B. Mohanty;G. Paloso
影响因子：
6.4
作者：
Y. You;E. Hu
通讯作者：
Y. You;E. Hu
影响因子：
11.2
作者：
O. Badr;P. O'callaghan;S. Probert
通讯作者：
O. Badr;P. O'callaghan;S. Probert
影响因子：
9
作者：
Takahisa Yamamoto;T. Furuhata;N. Arai;K. Mori
通讯作者：
Takahisa Yamamoto;T. Furuhata;N. Arai;K. Mori