Second Law Analysis of an Organic Rankine Cycle Driven by Solar

被引：2
|
作者：
Song, Jianzhong [1 ]
Zhang, Xiaosong [1 ]
机构：
[1] Southeast Univ, Sch Energy & Environm, Nanjing, Jiangsu, Peoples R China
来源：
RENEWABLE AND SUSTAINABLE ENERGY, PTS 1-7 | 2012年 / 347-353卷
关键词：
second law analysis; thermal efficiency; ORC; power generation; solar energy; SYSTEMS;
D O I：
10.4028/www.scientific.net/AMR.347-353.1083
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this paper, a thermal power system utilizing low-grade solar energy was proposed and analyzed. It can efficiently use the heat collected by the collector to provide electricity and also can provide some heat energy to satisfy the demand of heat. The system bases on the organic Rankine cycle. The evaporator employed in the system makes the organic working fluid turn to vapour phase at a high pressure level. Also a screw expander is employed in the system to conversion the heat energy to mechanical work. For the proposed system, a working condition was set and the performance of the system was calculated. When the temperature of the heat source is 95 degrees C and the expander inlet pressure is 0.8MPa, the first law heat efficiency is 7.25% and the system exergetic efficiency is 10.14% for the system.
引用
收藏
页码：1083 / 1087
页数：5
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