Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Thermo-economic investigation of binary flashing cycle for enhanced geothermal system | |
Wang, Lingbao1,2,3; Li, Huashan1,2,3 ; Bu, Xianbiao1,2,3
| |
| 2021 | |
| Source Publication | GEOTHERMICS
 |
| ISSN | 0375-6505 |
| Volume | 89Pages:9 |
| Corresponding Author | Bu, Xianbiao(buxb@ms.giec.ac.cn) |
| Abstract | In this paper, as a promising technology, the binary flashing cycle (BFC) is proposed for enhanced geothermal systems (EGS) exploitation. The detailed thermo-economic model is developed. With the thermal efficiency, net power output, total investment cost and levelized energy cost (LEC) as evaluation criteria, the flowsheet modeling and thermo-economic analysis are conducted. It is revealed that larger geothermal well depth and geothermal brine flow rate are in favor for improving system thermal performance. However, it is not always beneficial for the economic performance. There exist the optimal depth (3300 m) and geothermal brine flow rate (57 kg/s), at which the LEC obtains the minimum (0.329 USD/kWh) and (0.328 USD/kWh), respectively. For an economic EGS operation, the geothermal brine flow rate should be no less than 50 kg/s. The influences of operating parameters, including generation temperature, dryness degree at the vapor generator outlet and flashing temperature, on the evaluation criteria are also discussed. To achieve better economic benefits, the generation temperature should be less than 110 degrees C and the dryness should be larger than 0.2. With the flashing temperature 72-82 degrees C, the EGS-BFC yields excellent thermodynamic and economic performance. The present investigation will be helpful for the geothermal well construction, resource mining and generation system operating parameters design. |
| Keyword | Binary flashing cycle Enhanced geothermal system Geothermal well depth Thermoeconomic analysis Operating parameters |
| DOI | 10.1016/j.geothermics.2020.101951 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2018YFB1501805] ; Natural Science Foundation of Guangdong Province[2018A030313018] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2017402] |
| WOS Research Area | Energy & Fuels ; Geology |
| Funding Organization | National Key Research and Development Program of China ; Natural Science Foundation of Guangdong Province ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| WOS Subject | Energy & Fuels ; Geosciences, Multidisciplinary |
| WOS ID | WOS:000595925900005 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/32365 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Bu, Xianbiao |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Wang, Lingbao,Li, Huashan,Bu, Xianbiao. Thermo-economic investigation of binary flashing cycle for enhanced geothermal system[J]. GEOTHERMICS,2021,89:9. |
| APA | Wang, Lingbao,Li, Huashan,&Bu, Xianbiao.(2021).Thermo-economic investigation of binary flashing cycle for enhanced geothermal system.GEOTHERMICS,89,9. |
| MLA | Wang, Lingbao,et al."Thermo-economic investigation of binary flashing cycle for enhanced geothermal system".GEOTHERMICS 89(2021):9. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment