Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| A new understanding on thermal efficiency of organic Rankine cycle: Cycle separation based on working fluids properties | |
Wang, Yongzhen1; Zhao, Jun1; Chen, Guibing1; Deng, Shuai1; An, Qingsong1; Luo, Chao1,2 ; Alvi, Junaid1
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| 2018-02-01 | |
| Source Publication | ENERGY CONVERSION AND MANAGEMENT
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| ISSN | 0196-8904 |
| Volume | 157Pages:169-175 |
| Corresponding Author | An, Qingsong(anqingsong@tju.edu.en) |
| Abstract | 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. |
| Keyword | Organic Rankine cycle Cycle separating Working fluids selection Molecular complexity Performance prediction Superheat degree |
| DOI | 10.1016/j.enconman.2017.11.079 |
| WOS Keyword | WASTE HEAT-RECOVERY ; MULTIOBJECTIVE OPTIMIZATION ; EXERGOECONOMIC ANALYSIS ; THERMODYNAMIC ANALYSIS ; DESIGN ; ORC ; PERFORMANCE ; SELECTION ; SYSTEMS ; ALGORITHM |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Guangdong province science and technology project[2013B091500087] ; Tianjin municipal science and technology project[14ZCDGSF00035] |
| WOS Research Area | Thermodynamics ; Energy & Fuels ; Mechanics |
| Funding Organization | Guangdong province science and technology project ; Tianjin municipal science and technology project |
| WOS Subject | Thermodynamics ; Energy & Fuels ; Mechanics |
| WOS ID | WOS:000425198700016 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/23478 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | An, Qingsong |
| Affiliation | 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 |
| Recommended Citation 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. |
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