温度参数对有机朗肯循环系统的影响研究
The Influence of Temperature Parameters on the Organic Rankine Cycle System
浏览(1546) 下载(11)
- 引用格式:
-
胡志明,阙燚,赵淑珍.温度参数对有机朗肯循环系统的影响研究[J].天然气与石油,2020,38(5):114-123.doi:10.3969/j.issn.1006-5539.2020.05.019
Hu Zhiming, Que Yi, Zhao Shuzhen.The Influence of Temperature Parameters on the Organic Rankine Cycle System[J].Natural Gas and Oil,2020,38(5):114-123.doi:10.3969/j.issn.1006-5539.2020.05.019
- DOI:
- 10.3969/j.issn.1006-5539.2020.05.019
- 作者:
- 胡志明，阙燚，赵淑珍
Hu Zhiming, Que Yi, Zhao Shuzhen
- 作者单位:
- 中国石油工程建设有限公司西南分公司
China Petroleum Engineering & Construction Corp.Southwest Company, Chengdu, Sichuan, 610041, China
- 关键词:
- 有机朗肯循环;温度参数;净输出功;热效率;平准化发电成本
ORC; Temperature parameters; Net output work; Thermal efficiency; LEC
- 摘要:
- 针对天然气与石油行业中大量存在的90~150 ℃低温余热,采用有机朗肯循环(Organic Rankine Cycle,ORC)进行回收利用。选用R 134 a、R 245 fa和R 601 a三种有机工质,根据有机朗肯循环的理论基础,建立热力学模型,并考虑温度参数对有机朗肯循环系统的影响。研究发现：有机朗肯循环系统在最佳蒸发温度时,循环净输出功最大,平准化发电成本最小;系统还存在最佳冷凝温度使得净输出功和热效率最大,平准化发电成本最小的现象;工质的过热度、过冷度对循环热效率和平准化发电成本没有显著的影响,反而会减小循环的净输出功。综合净输出功、热效率以及平准化发电成本,R 245 fa是最适宜用于低温余热回收有机朗肯循环系统的有机工质。该研究可为低温余热的回收利用提供一定的理论基础。
In this paper, Organic Rankine Cycle (ORC) was used to recover the low temperature exhaust heat of90~150℃, which was abundant in natural gas and petroleum industry.Three organic working medium of R134a, R245fa and R601a were selected.According to the theory of ORC, a thermodynamic model was established,and the influence of temperature parameters on the ORC system was taken into consideration.The result shows that the optimal evaporation temperature of the ORC system maximizes the net output work andminimizes thelevelizedenergycostof the cycle.Moreover, the net output work and thermal efficiency were maximized and the LEC minimized at optimal condensation temperature;the superheat and supercooling of working medium has no significant influence on the thermal efficiency and LEC of the cycle,but will reduces the net output work of the cycle.In this paper, R245fa is the most optimum working medium for the low temperature heat recovery system, among which net output work, thermal efficiency and LEC are integrated.
