Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system
Tens of millions of abandoned exploitation wells (AEW) exist throughout the world, posing a threat to the environment and costing extra investment for decommissioning. Revitalization of the AEW offers a cost-effective solution for geothermal energy exploitation by saving the high costs of decommissi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2022
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| Online Access: | http://eprints.utm.my/100993/1/SritharRajoo2022_PerformanceEnhancementofHorizontalExtensionandThermalEnergy.pdf |
| _version_ | 1796866980130586624 |
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| author | Xiao, Fei Yang, Lizhong He, Lei Gil, Antoni Rajoo, Srithar Zhao, Zhiye Romagnoli, Alessandro Cabeza, Luisa F. |
| author_facet | Xiao, Fei Yang, Lizhong He, Lei Gil, Antoni Rajoo, Srithar Zhao, Zhiye Romagnoli, Alessandro Cabeza, Luisa F. |
| author_sort | Xiao, Fei |
| collection | ePrints |
| description | Tens of millions of abandoned exploitation wells (AEW) exist throughout the world, posing a threat to the environment and costing extra investment for decommissioning. Revitalization of the AEW offers a cost-effective solution for geothermal energy exploitation by saving the high costs of decommissioning and drilling. However, the thermal resources from AEW are usually of low and medium grade. Measures should be taken to increase the efficiency of AEW geothermal power plants. Meanwhile, the regasification process of satellite liquified natural gas (LNG) stations worldwide suffer from a loss of high-grade cold energy. Various studies have used geothermal heat and LNG cold to produce electricity, yet the horizontal extension of the AEW that may increase the recovered temperature, and the fluctuation of the LNG flow that may reduce the power output, were not discussed. This study proposes and evaluates a novel integrated organic Rankine cycle (ORC) system that uses the geothermal heat from the AEWs and waste LNG cold energy from satellite LNG stations, focusing on the performance enhancement of horizontal extension to increase the geothermal temperature and thermal energy storage to stabilize the LNG cold energy supply. A numerical model is developed that considers the horizontal extension in the AEW, and the horizontal extension is found to significantly increase the geothermal fluid temperature. A machine learning-based predictive model is built to assess the AEW outlet temperature under given parameters and working conditions. Cold thermal energy storage (CTES) modules are designed and optimized to stabilize the waste cold energy recovery when exposed to highly fluctuating LNG supply during off-design operation. CTES increased the ORC efficiency by 38.5% and has the potential to significantly shorten the payback period. Therefore, by utilizing the horizontal extension of the AEW and combining the power generation with LNG cold through thermal energy storage, the zero-emission geothermal and waste cold energy-based system can be a viable solution for future AEW revitalization and LNG waste cold energy utilization. |
| first_indexed | 2024-03-05T21:20:18Z |
| format | Article |
| id | utm.eprints-100993 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T21:20:18Z |
| publishDate | 2022 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | utm.eprints-1009932023-05-23T10:29:46Z http://eprints.utm.my/100993/ Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system Xiao, Fei Yang, Lizhong He, Lei Gil, Antoni Rajoo, Srithar Zhao, Zhiye Romagnoli, Alessandro Cabeza, Luisa F. TJ Mechanical engineering and machinery Tens of millions of abandoned exploitation wells (AEW) exist throughout the world, posing a threat to the environment and costing extra investment for decommissioning. Revitalization of the AEW offers a cost-effective solution for geothermal energy exploitation by saving the high costs of decommissioning and drilling. However, the thermal resources from AEW are usually of low and medium grade. Measures should be taken to increase the efficiency of AEW geothermal power plants. Meanwhile, the regasification process of satellite liquified natural gas (LNG) stations worldwide suffer from a loss of high-grade cold energy. Various studies have used geothermal heat and LNG cold to produce electricity, yet the horizontal extension of the AEW that may increase the recovered temperature, and the fluctuation of the LNG flow that may reduce the power output, were not discussed. This study proposes and evaluates a novel integrated organic Rankine cycle (ORC) system that uses the geothermal heat from the AEWs and waste LNG cold energy from satellite LNG stations, focusing on the performance enhancement of horizontal extension to increase the geothermal temperature and thermal energy storage to stabilize the LNG cold energy supply. A numerical model is developed that considers the horizontal extension in the AEW, and the horizontal extension is found to significantly increase the geothermal fluid temperature. A machine learning-based predictive model is built to assess the AEW outlet temperature under given parameters and working conditions. Cold thermal energy storage (CTES) modules are designed and optimized to stabilize the waste cold energy recovery when exposed to highly fluctuating LNG supply during off-design operation. CTES increased the ORC efficiency by 38.5% and has the potential to significantly shorten the payback period. Therefore, by utilizing the horizontal extension of the AEW and combining the power generation with LNG cold through thermal energy storage, the zero-emission geothermal and waste cold energy-based system can be a viable solution for future AEW revitalization and LNG waste cold energy utilization. Elsevier Ltd 2022 Article PeerReviewed application/pdf en http://eprints.utm.my/100993/1/SritharRajoo2022_PerformanceEnhancementofHorizontalExtensionandThermalEnergy.pdf Xiao, Fei and Yang, Lizhong and He, Lei and Gil, Antoni and Rajoo, Srithar and Zhao, Zhiye and Romagnoli, Alessandro and Cabeza, Luisa F. (2022) Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system. Applied Thermal Engineering, 214 (NA). pp. 1-19. ISSN 1359-4311 http://dx.doi.org/10.1016/j.applthermaleng.2022.118736 DOI : 10.1016/j.applthermaleng.2022.118736 |
| spellingShingle | TJ Mechanical engineering and machinery Xiao, Fei Yang, Lizhong He, Lei Gil, Antoni Rajoo, Srithar Zhao, Zhiye Romagnoli, Alessandro Cabeza, Luisa F. Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system |
| title | Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system |
| title_full | Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system |
| title_fullStr | Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system |
| title_full_unstemmed | Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system |
| title_short | Performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite LNG station integrated ORC system |
| title_sort | performance enhancement of horizontal extension and thermal energy storage to an abandoned exploitation well and satellite lng station integrated orc system |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.utm.my/100993/1/SritharRajoo2022_PerformanceEnhancementofHorizontalExtensionandThermalEnergy.pdf |
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