Energy and Conventional and Advanced Exergy Analyses of Low-Temperature Geothermal Binary-Flashing Cycle Using Zeotropic Mixtures
文献类型：期刊论文
| 作者 | Zhao, Yuan2,3; Du, Bowen2; Chen, Shunyi2; Zhao, Jun3; Guo, Zhipeng1,4; Wang, Lingbao4 |
| 刊名 | ENERGIES
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 15期号:10页码:18 |
| 关键词 | advanced exergy analysis geothermal energy binary-flashing cycle zeotropic mixtures inerting mass concentration |
| DOI | 10.3390/en15103487 |
| 通讯作者 | Wang, Lingbao(wanglb@ms.giec.ac.cn) |
| 英文摘要 | Due to its deep utilization of geobrine and its high net power output, the binary-flashing cycle (BFC) is deemed to be the future geothermal energy power generation technology. The working fluids considered in present analysis are zeotropic mixtures (R245 /R600a). The system thermodynamic model is built, and the energy and conventional and advanced exergy analyses are carried out to reveal the real optimization potential. It is demonstrated that the optimal ranges of R245fa mass fraction and working fluid dryness at the evaporator outlet are 0.30 similar to 0.50 and 0.40 similar to 0.60, considering the thermodynamic performance and the flammability of the zeotropic mixtures, simultaneously. Conventional exergy analysis indicates that the maximum exergy destruction occurs in the condenser, followed by the expander, evaporator, flashing tank, preheater, high-pressure pump and low-pressure pump. Meanwhile, the advanced exergy analysis reveals that the expander should be given the first priority for optimization, followed by the condenser and evaporator. The BFC has a large potential for improvement due to higher avoidable exergy destruction, about 48.6% of the total system exergy destruction can be reduced. Moreover, the interconnections among system components are not very strong, owing to small exogenous exergy destructions. It also demonstrates the effectiveness of advanced exergy analysis, and the approach can be extended to other energy conversion systems to maximize the energy and exergy savings for sustainable development. |
| WOS关键词 | ORGANIC RANKINE-CYCLE ; WORKING FLUID SELECTION ; HEAT-RECOVERY ; OPTIMIZATION ; R245FA |
| 资助项目 | Natural Science Foundation of Guangdong Province[2021A1515011763] ; Science and Technology Plan Project of Guangzhou[202102020301] ; China Postdoctoral Science Foundation[2020M681799] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000803337100001 |
| 资助机构 | Natural Science Foundation of Guangdong Province ; Science and Technology Plan Project of Guangzhou ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/36720]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Wang, Lingbao |
| 作者单位 | 1.Univ Sci & Technol China, Sch Engn Sci, Hefei 230026, Peoples R China 2.Powerchina HuaDong Engn Corp Ltd, Hangzhou 311122, Peoples R China 3.Minist Educ China, Key Lab Efficient Utilizat Low & Medium Grade Ene, Tianjin 300350, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Yuan,Du, Bowen,Chen, Shunyi,et al. Energy and Conventional and Advanced Exergy Analyses of Low-Temperature Geothermal Binary-Flashing Cycle Using Zeotropic Mixtures[J]. ENERGIES,2022,15(10):18. |
| APA | Zhao, Yuan,Du, Bowen,Chen, Shunyi,Zhao, Jun,Guo, Zhipeng,&Wang, Lingbao.(2022).Energy and Conventional and Advanced Exergy Analyses of Low-Temperature Geothermal Binary-Flashing Cycle Using Zeotropic Mixtures.ENERGIES,15(10),18. |
| MLA | Zhao, Yuan,et al."Energy and Conventional and Advanced Exergy Analyses of Low-Temperature Geothermal Binary-Flashing Cycle Using Zeotropic Mixtures".ENERGIES 15.10(2022):18. |
入库方式： OAI收割
来源：广州能源研究所
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