Techno-economic performance comparison of enhanced geothermal system with typical cycle configurations for combined heating and power
•Four combined heating and power systems are presented.•Combined systems enhance the utilization rate by more than 50%.•Operating parameters are optimized under different conditions.•Optimal techno-economic performance has been obtained. The hot dry rock contains abundant heat, which can be exploite...
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| Veröffentlicht in: | Energy conversion and management 2020-02, Vol.205, p.112409, Article 112409 |
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| creator | Meng, Nan Li, Tailu Jia, Yanan Qin, Haosen Liu, Qinghua Zhao, Wenqiang Lei, Guobin |
| description | •Four combined heating and power systems are presented.•Combined systems enhance the utilization rate by more than 50%.•Operating parameters are optimized under different conditions.•Optimal techno-economic performance has been obtained.
The hot dry rock contains abundant heat, which can be exploited by enhanced geothermal systems, being one of the most commonly used geothermal power generation solutions. To enhance the power generation efficiency and utilization of geothermal resource, four combined heating and power systems are presented for geothermal fluids temperature ranging from 120 °C to 220 °C and dryness between 0 and 0.9. The operating parameters of four enhanced geothermal systems are respectively optimized, and the system performances are analyzed and compared. The results showed that the system performances as well as the optimal operating conditions varied with the temperature and dryness of the geothermal fluid. The double-flash organic Rankine cycle based combined heating and power system exhibited the highest power generation efficiency under geothermal fluid temperature and dryness coupling. The double-flash organic Rankine cycle based combined heating and power system had the highest techno-economic performance in the practical application, which the levelized cost of electricity was 0.0831 $/kWh and the payback period was 9.43 years. The organic Rankine cycle subsystem using n-Octane showed preferable power generation performance, while using n-Decane showed preferable techno-economic performance. Moreover, the enhanced geothermal system configuration and its operating parameters should match with actual local geothermal fluid conditions and the double-flash organic Rankine cycle based combined heating and power system was recommended in most cases. |
| doi_str_mv | 10.1016/j.enconman.2019.112409 |
| format | Article |
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The hot dry rock contains abundant heat, which can be exploited by enhanced geothermal systems, being one of the most commonly used geothermal power generation solutions. To enhance the power generation efficiency and utilization of geothermal resource, four combined heating and power systems are presented for geothermal fluids temperature ranging from 120 °C to 220 °C and dryness between 0 and 0.9. The operating parameters of four enhanced geothermal systems are respectively optimized, and the system performances are analyzed and compared. The results showed that the system performances as well as the optimal operating conditions varied with the temperature and dryness of the geothermal fluid. The double-flash organic Rankine cycle based combined heating and power system exhibited the highest power generation efficiency under geothermal fluid temperature and dryness coupling. The double-flash organic Rankine cycle based combined heating and power system had the highest techno-economic performance in the practical application, which the levelized cost of electricity was 0.0831 $/kWh and the payback period was 9.43 years. The organic Rankine cycle subsystem using n-Octane showed preferable power generation performance, while using n-Decane showed preferable techno-economic performance. Moreover, the enhanced geothermal system configuration and its operating parameters should match with actual local geothermal fluid conditions and the double-flash organic Rankine cycle based combined heating and power system was recommended in most cases.</description><identifier>ISSN: 0196-8904</identifier><identifier>EISSN: 1879-2227</identifier><identifier>DOI: 10.1016/j.enconman.2019.112409</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Cogeneration ; Configurations ; Economic performance ; Economics ; Electric power systems ; Energy management ; Enhanced geothermal systems ; Flash cycle ; Fluids ; Geothermal energy ; Geothermal power ; Geothermal resources ; Heating ; Hot dry rock ; Organic Rankine cycle ; Parameters ; Payback periods ; Power efficiency ; Rankine cycle ; Subsystems ; System configuration ; Temperature ; Thermodynamic</subject><ispartof>Energy conversion and management, 2020-02, Vol.205, p.112409, Article 112409</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright Elsevier Science Ltd. Feb 1, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c340t-52109937552586f8fc6da8fe4dd84c7f31b7e4ffc51e899ce4cfc01df33969033</citedby><cites>FETCH-LOGICAL-c340t-52109937552586f8fc6da8fe4dd84c7f31b7e4ffc51e899ce4cfc01df33969033</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0196890419314165$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Meng, Nan</creatorcontrib><creatorcontrib>Li, Tailu</creatorcontrib><creatorcontrib>Jia, Yanan</creatorcontrib><creatorcontrib>Qin, Haosen</creatorcontrib><creatorcontrib>Liu, Qinghua</creatorcontrib><creatorcontrib>Zhao, Wenqiang</creatorcontrib><creatorcontrib>Lei, Guobin</creatorcontrib><title>Techno-economic performance comparison of enhanced geothermal system with typical cycle configurations for combined heating and power</title><title>Energy conversion and management</title><description>•Four combined heating and power systems are presented.•Combined systems enhance the utilization rate by more than 50%.•Operating parameters are optimized under different conditions.•Optimal techno-economic performance has been obtained.
The hot dry rock contains abundant heat, which can be exploited by enhanced geothermal systems, being one of the most commonly used geothermal power generation solutions. To enhance the power generation efficiency and utilization of geothermal resource, four combined heating and power systems are presented for geothermal fluids temperature ranging from 120 °C to 220 °C and dryness between 0 and 0.9. The operating parameters of four enhanced geothermal systems are respectively optimized, and the system performances are analyzed and compared. The results showed that the system performances as well as the optimal operating conditions varied with the temperature and dryness of the geothermal fluid. The double-flash organic Rankine cycle based combined heating and power system exhibited the highest power generation efficiency under geothermal fluid temperature and dryness coupling. The double-flash organic Rankine cycle based combined heating and power system had the highest techno-economic performance in the practical application, which the levelized cost of electricity was 0.0831 $/kWh and the payback period was 9.43 years. The organic Rankine cycle subsystem using n-Octane showed preferable power generation performance, while using n-Decane showed preferable techno-economic performance. Moreover, the enhanced geothermal system configuration and its operating parameters should match with actual local geothermal fluid conditions and the double-flash organic Rankine cycle based combined heating and power system was recommended in most cases.</description><subject>Cogeneration</subject><subject>Configurations</subject><subject>Economic performance</subject><subject>Economics</subject><subject>Electric power systems</subject><subject>Energy management</subject><subject>Enhanced geothermal systems</subject><subject>Flash cycle</subject><subject>Fluids</subject><subject>Geothermal energy</subject><subject>Geothermal power</subject><subject>Geothermal resources</subject><subject>Heating</subject><subject>Hot dry rock</subject><subject>Organic Rankine cycle</subject><subject>Parameters</subject><subject>Payback periods</subject><subject>Power efficiency</subject><subject>Rankine cycle</subject><subject>Subsystems</subject><subject>System configuration</subject><subject>Temperature</subject><subject>Thermodynamic</subject><issn>0196-8904</issn><issn>1879-2227</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNqFkMtKAzEYhYMoWKuvIAHXU5PJ3LJTijcouKnrMP3nTyelk4zJ1DIP4Hubobp2FTg55wv5CLnlbMEZL-53C7TgbFfbRcq4XHCeZkyekRmvSpmkaVqek1m8KJJKsuySXIWwY4yJnBUz8r1GaK1LMBJcZ4D26LXzEQZIwXV97U1wljpN0bZT2tAtuqHF2NnTMIYBO3o0Q0uHsTcQMxhhP22tNtuDrwfjbKCROeE2xkZAizG1W1rbhvbuiP6aXOh6H_Dm95yTj-en9fI1Wb2_vC0fVwmIjA1JnnImpSjzPM2rQlcaiqauNGZNU2VQasE3JWZaQ86xkhIwAw2MN1oIWUgmxJzcnbi9d58HDIPauYO38UmVipKXZcZZEVvFqQXeheBRq96brvaj4kxNytVO_SlXk3J1Uh6HD6chxj98GfQqgMHJmfEIg2qc-Q_xAynKkRA</recordid><startdate>20200201</startdate><enddate>20200201</enddate><creator>Meng, Nan</creator><creator>Li, Tailu</creator><creator>Jia, Yanan</creator><creator>Qin, Haosen</creator><creator>Liu, Qinghua</creator><creator>Zhao, Wenqiang</creator><creator>Lei, Guobin</creator><general>Elsevier Ltd</general><general>Elsevier Science Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>20200201</creationdate><title>Techno-economic performance comparison of enhanced geothermal system with typical cycle configurations for combined heating and power</title><author>Meng, Nan ; Li, Tailu ; Jia, Yanan ; Qin, Haosen ; Liu, Qinghua ; Zhao, Wenqiang ; Lei, Guobin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c340t-52109937552586f8fc6da8fe4dd84c7f31b7e4ffc51e899ce4cfc01df33969033</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Cogeneration</topic><topic>Configurations</topic><topic>Economic performance</topic><topic>Economics</topic><topic>Electric power systems</topic><topic>Energy management</topic><topic>Enhanced geothermal systems</topic><topic>Flash cycle</topic><topic>Fluids</topic><topic>Geothermal energy</topic><topic>Geothermal power</topic><topic>Geothermal resources</topic><topic>Heating</topic><topic>Hot dry rock</topic><topic>Organic Rankine cycle</topic><topic>Parameters</topic><topic>Payback periods</topic><topic>Power efficiency</topic><topic>Rankine cycle</topic><topic>Subsystems</topic><topic>System configuration</topic><topic>Temperature</topic><topic>Thermodynamic</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Meng, Nan</creatorcontrib><creatorcontrib>Li, Tailu</creatorcontrib><creatorcontrib>Jia, Yanan</creatorcontrib><creatorcontrib>Qin, Haosen</creatorcontrib><creatorcontrib>Liu, Qinghua</creatorcontrib><creatorcontrib>Zhao, Wenqiang</creatorcontrib><creatorcontrib>Lei, Guobin</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>Energy conversion and management</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Meng, Nan</au><au>Li, Tailu</au><au>Jia, Yanan</au><au>Qin, Haosen</au><au>Liu, Qinghua</au><au>Zhao, Wenqiang</au><au>Lei, Guobin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Techno-economic performance comparison of enhanced geothermal system with typical cycle configurations for combined heating and power</atitle><jtitle>Energy conversion and management</jtitle><date>2020-02-01</date><risdate>2020</risdate><volume>205</volume><spage>112409</spage><pages>112409-</pages><artnum>112409</artnum><issn>0196-8904</issn><eissn>1879-2227</eissn><abstract>•Four combined heating and power systems are presented.•Combined systems enhance the utilization rate by more than 50%.•Operating parameters are optimized under different conditions.•Optimal techno-economic performance has been obtained.
The hot dry rock contains abundant heat, which can be exploited by enhanced geothermal systems, being one of the most commonly used geothermal power generation solutions. To enhance the power generation efficiency and utilization of geothermal resource, four combined heating and power systems are presented for geothermal fluids temperature ranging from 120 °C to 220 °C and dryness between 0 and 0.9. The operating parameters of four enhanced geothermal systems are respectively optimized, and the system performances are analyzed and compared. The results showed that the system performances as well as the optimal operating conditions varied with the temperature and dryness of the geothermal fluid. The double-flash organic Rankine cycle based combined heating and power system exhibited the highest power generation efficiency under geothermal fluid temperature and dryness coupling. The double-flash organic Rankine cycle based combined heating and power system had the highest techno-economic performance in the practical application, which the levelized cost of electricity was 0.0831 $/kWh and the payback period was 9.43 years. The organic Rankine cycle subsystem using n-Octane showed preferable power generation performance, while using n-Decane showed preferable techno-economic performance. Moreover, the enhanced geothermal system configuration and its operating parameters should match with actual local geothermal fluid conditions and the double-flash organic Rankine cycle based combined heating and power system was recommended in most cases.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.enconman.2019.112409</doi></addata></record> |
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| subjects | Cogeneration Configurations Economic performance Economics Electric power systems Energy management Enhanced geothermal systems Flash cycle Fluids Geothermal energy Geothermal power Geothermal resources Heating Hot dry rock Organic Rankine cycle Parameters Payback periods Power efficiency Rankine cycle Subsystems System configuration Temperature Thermodynamic |
| title | Techno-economic performance comparison of enhanced geothermal system with typical cycle configurations for combined heating and power |
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