Performance of a 5 kWe Organic Rankine Cycle at part-load operation

被引：62

作者：

Ibarra, Mercedes ^{[1
]}

Rovira, Antonio ^{[2
]}

Alarcon-Padilla, Diego-Cesar ^{[1
]}

Blanco, Julian ^{[1
]}

机构：

[1] CIEMAT, Plataforma Solar Almeria, Almeria 04200, Spain

[2] UNED, ETS Ingenieros Ind, Madrid 28040, Spain

来源：

APPLIED ENERGY | 2014年 / 120卷

关键词：

Organic Rankine Cycle; Off-design modeling; Scroll expander; Thermal analysis; WASTE HEAT-RECOVERY; WORKING FLUIDS; SCROLL EXPANDER; RO DESALINATION; ORC; OPTIMIZATION; SYSTEM; POWER; DESIGN; SELECTION;

D O I：

10.1016/j.apenergy.2014.01.057

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：

This paper analyzes the performance of an Organic Rankine Cycle (ORC) system at part load operation. The objective is to understand its behavior from a thermodynamic perspective, identifying which elements are the most critical and which are the best operating points for each level of demanded power. This paper also compares two working fluids: R245fa and Solkatherm ES36 (SES36) for the same cycle specifications. The results have shown that the scroll isentropic efficiency has a great influence on the cycle performance and its thermal efficiency and that SES36 arises as a potential better fluid than R245fa. At the given maximum and minimum temperatures, the best operation point was determined. This allows reaching a maximum efficiency for each demanded level of power; depending on the required amount of power, the expander speed and the working pressure are adjusted. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：147 / 158

页数：12

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