A new understanding on thermal efficiency of organic Rankine cycle: Cycle separation based on working fluids properties

doi:10.1016/j.enconman.2017.11.079

GIEC OpenIR

	A new understanding on thermal efficiency of organic Rankine cycle: Cycle separation based on working fluids properties
	Wang, Yongzhen 1; Zhao, Jun 1; Chen, Guibing 1; Deng, Shuai 1; An, Qingsong 1; Luo, Chao1,2 ; Alvi, Junaid 1
	2018-02-01
发表期刊	ENERGY CONVERSION AND MANAGEMENT
ISSN	0196-8904
卷号	157 页码:169-175
通讯作者	An, Qingsong(anqingsong@tju.edu.en)
摘要	The pivotal of organic Rankine cycle (ORC) promotion and optimization is revealing the thermodynamic relationship between cycle configuration, condition and its working fluid properties. Different from the traditional numerical calculation method (TNCM) of ORC, a new thermodynamic cycle separating method (TCSM) is introduced in this paper. Then, efficiency of ORC is conducted expediently by TCSM where Triangle cycle eta(TC)), Carrot cycle (eta(CC)) and Brayton cycle (eta(BC)) efficiencies are regarded as variables, that is, eta(SORC) = f (eta(TC),eta(CC),eta(BC)). When comparing with TNCM, TCSM not only has the acceptable precision for all the investigated 21 working fluids, but also the influence of critical temperature, molecular complexity of the working fluid and superheat degree as well as the reduced operating conditions of ORC can be revealed qualitatively and quantitatively. Finally, three conclusions are revealed: (1) Relationship between ORC limited efficiency (the reduced evaporating temperature of 0.9) and critical temperature of working fluid is revealed; (2) When superheat degree increases, ORC efficiency of dry fluid decreases and wet fluid increases linearly, while the variation of isotropic working fluid remains constant; (3) If the reduced temperatures of two different working fluids are equal, the corresponding efficiencies are equal too. The proposed thermodynamic cycle separating method provides an approach for working fluids selection and performance prediction of ORC.
关键词	Organic Rankine cycle Cycle separating Working fluids selection Molecular complexity Performance prediction Superheat degree
DOI	10.1016/j.enconman.2017.11.079
关键词[WOS]	WASTE HEAT-RECOVERY ; MULTIOBJECTIVE OPTIMIZATION ; EXERGOECONOMIC ANALYSIS ; THERMODYNAMIC ANALYSIS ; DESIGN ; ORC ; PERFORMANCE ; SELECTION ; SYSTEMS ; ALGORITHM
收录类别	SCI
语种	英语
资助项目	Guangdong province science and technology project[2013B091500087] ; Tianjin municipal science and technology project[14ZCDGSF00035]
WOS研究方向	Thermodynamics ; Energy & Fuels ; Mechanics
项目资助者	Guangdong province science and technology project ; Tianjin municipal science and technology project
WOS类目	Thermodynamics ; Energy & Fuels ; Mechanics
WOS记录号	WOS:000425198700016
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/23478
专题	中国科学院广州能源研究所
通讯作者	An, Qingsong
作者单位	1.Tianjin Univ, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300350, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yongzhen,Zhao, Jun,Chen, Guibing,et al. A new understanding on thermal efficiency of organic Rankine cycle: Cycle separation based on working fluids properties[J]. ENERGY CONVERSION AND MANAGEMENT,2018,157:169-175.
APA	Wang, Yongzhen.,Zhao, Jun.,Chen, Guibing.,Deng, Shuai.,An, Qingsong.,...&Alvi, Junaid.(2018).A new understanding on thermal efficiency of organic Rankine cycle: Cycle separation based on working fluids properties.ENERGY CONVERSION AND MANAGEMENT,157,169-175.
MLA	Wang, Yongzhen,et al."A new understanding on thermal efficiency of organic Rankine cycle: Cycle separation based on working fluids properties".ENERGY CONVERSION AND MANAGEMENT 157(2018):169-175.