Study of working fluid selection of organic Rankine cycle (ORC) for engine waste heat recovery

被引：604

作者：

Wang, E. H. ^{[1
]}

Zhang, H. G. ^{[1
]}

Fan, B. Y. ^{[1
]}

Ouyang, M. G. ^{[2
]}

Zhao, Y. ^{[3
]}

Mu, Q. H. ^{[3
]}

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100124, Peoples R China

[2] Tsinghua Univ, State Key Lab Automot Safety & Energy, Beijing 100084, Peoples R China

[3] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China

来源：

ENERGY | 2011年 / 36卷 / 05期

关键词：

Organic Rankine cycle; Waste heat recovery; Working fluid; Engine; Matlab; PERFORMANCE ANALYSIS; POWER; OPTIMIZATION; DESIGN; SYSTEM;

D O I：

10.1016/j.energy.2011.03.041

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Organic Rankine Cycle (ORC) could be used to recover low-grade waste heat. When a vehicle is running, the engine exhaust gas states have a wide range of variance. Defining the operational conditions of the ORC that achieve the maximum utilization of waste heat is important. In this paper the performance of different working fluids operating in specific regions was analyzed using a thermodynamic model built in Matlab together with REFPROP. Nine different pure organic working fluids were selected according to their physical and chemical properties. The results were compared in the regions when net power outputs were fixed at 10 kW. Safety levels and environmental impacts were also evaluated. The outcomes indicate that R11, R141b, R113 and R123 manifest slightly higher thermodynamic performances than the others; however, R245fa and R245ca are the most environment-friendly working fluids for engine waste heat-recovery applications. The optimal control principle of ORC under the transient process is discussed based on the analytical results. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：3406 / 3418

页数：13

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