An Evaluation of a New Solar-Assisted and Ground-Cooled Organic Rankine Cycle (ORC) with a Recuperator

被引:6
|
作者
Kara, Osman [1 ]
机构
[1] Osmaniye Korkut Ata Univ, Fac Engn, Dept Energy Syst Engn, Osmaniye, Turkiye
关键词
Solar power; Ground source heat exchanger; ORC; Parabolic trough collector; WASTE HEAT-RECOVERY; PERFORMANCE ANALYSIS; ELECTRICAL EFFICIENCY; POWER-GENERATION; EXERGY ANALYSIS; ENERGY; SYSTEM; OPTIMIZATION; TECHNOLOGIES; TEMPERATURE;
D O I
10.1007/s13369-022-07596-6
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
This study investigated a new solar-powered and ground-source cooling organic Rankine cycle (ORC) system. In the analysis of the ORC system, three different working fluids, namely toluene, cyclohexane, and isopentane, were used, as well as therminol 66 as thermal oil in the solar energy cycle. The difference in the designed system lies in the technique of cooling the heat generated in the condenser part with soil. Moreover, system efficiency was investigated for condenser temperature, collector surface area, soil temperature, and different radiation values. The variation of condenser temperature with three different working fluids was evaluated for two different evaporator pressures. As a result, the ORC system efficiency increased at a lower condenser temperature. When the condenser temperature was reduced from 60 to 30 degrees C, the ORC efficiency increased for cyclohexane, toluene, and isopentane fluids in the following order: 0.251-* 0.293, 0.2798-* 0.3183 and 0.1707-* 0.2148. In the last part of the study, hourly analysis was made for the days of the 15th of January and the 15th of June in a selected region using meteorological data. The ORC efficiency (eta orc) was calculated as 0.2997 and 0.2808 for these days, respectively.
引用
收藏
页码:11781 / 11800
页数:20
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