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A novel flow-resistor network model for characterizing enhanced geothermal system heat reservoir

Jian GUO, Wenjiong CAO, Yiwei WANG, Fangming JIANG

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 99-106 doi: 10.1007/s11708-018-0555-1

Abstract: The fracture characteristics of a heat reservoir are of critical importance to enhanced geothermal systemsBesides, it performs a case study dealing with the Soultz enhanced geothermal system (EGS).In addition, the fracture numbers underneath specific well systems are derived.

Keywords： enhanced geothermal systems     flow-resistor network model     fracture characteristics     heat reservoir    

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The Basic Characteristics of the Yangbajing Geothermal Field-A Typical High Temperature Geothermal System

Duo Ji

Strategic Study of CAE 2003, Volume 5, Issue 1,   Pages 42-47

Abstract:

The Yangbajing Geothermal Field is one of non-volcanic high-temperature geothermal fields.

Keywords： high temperature geothermal     thermal reservoirs     genesis     Yangbajing     Tibet    

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Strategic analysis of China’s geothermal energy industry

Hao GONG, Baicun WANG, Haijun LIANG, Zuoxian LUO, Yaofeng CAO

Frontiers of Engineering Management 2021, Volume 8, Issue 3,   Pages 390-401 doi: 10.1007/s42524-020-0106-4

Abstract: China is an early user of geothermal energy, and its direct use ranks first in the world.Recent national strategies and policies have enabled China’s geothermal energy industry to enter a newincomplete implementation of national policies, unclear authority between governmental administrative systemshealthy and sustainable development include improving resource exploration, rationalizing administration systems, enhancing policy guidance and financial support, and cultivating geothermal talent.

Keywords： geothermal energy     strategic analysis     SWOT–PEST     policy     administration    

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Thermo-economic analysis of a direct supercritical CO electric power generation system using geothermal

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 246-262 doi: 10.1007/s11708-021-0749-9

Abstract: A comprehensive thermo-economic model combining a geothermal heat mining system and a direct supercriticalthermo-economic and optimization analyses for the key design parameters of the whole system including the geothermalSpecifically, in geothermal heat extraction simulation, an integrated wellbore-reservoir system model(T2Well/ECO2N) was used to generate a database for creating a fast, predictive, and compatible geothermalCO2 sequestration credit is $1.00/t, an LCOE breakeven point compared to a conventional geothermal

Keywords： geothermal heat mining     supercritical CO2     power generation     thermo-economic analysis     optimization    

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A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction

Wenjiong CAO, Wenbo HUANG, Guoling WEI, Yunlong JIN, Fangming JIANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 439-449 doi: 10.1007/s11708-019-0612-4

Abstract: It is deduced by analogy that the fluid flow in enhanced geothermal system (EGS) heat reservoirs may

Keywords： enhanced geothermal system     non-Darcy flow     heat extraction     Reynolds number     Forchheimer number    

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Development Strategy for Co-mining of the Deep Mineral and Geothermal Resources

Cai Meifeng, Duo Ji, Chen Xiangsheng, Mao Jingwen, Tang Chun´an, Liu Zhiqiang, Ji Hongguang, Ren Fenhua, Guo Qifeng, Li Peng

Strategic Study of CAE 2021, Volume 23, Issue 6,   Pages 43-51 doi: 10.15302/J-SSCAE-2021.06.006

Abstract:

Co-mining of the deep mineral and geothermal resources is crucial forthe sustainable development of deep mining and provides a brand-new technical means for geothermal miningthe important values of the co-mining, introduce the current status of development and utilization of geothermalthe investigation and prospect judgment of the joint development and utilization of deep mineral and geothermaldevelopment system, and (4) the theories and technologies of geothermal energy exchange and transmission

Keywords： deep mineral resources     geothermal resources     co-mining     high-temperature strata     geothermal energy exchange    

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Large-scale geo-energy development: Sustainability impacts

Li JIANG,Liandong ZHU,Erkki HILTUNEN

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 757-763 doi: 10.1007/s11708-017-0455-9

Abstract: Geothermal energy is a renewable and alternative energy with the potential to replace fossil fuels andHowever, the development of geothermal energy has environmental, economic and social-cultural consequencesFrom a sustainability point of view, in the present study, a comprehensive analysis of consequences of geothermalThe geothermal energy industry will prosper only if sustainable aspects can be integrally considered.

Keywords： geothermal energy     sustainability     impact     development    

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Nanoparticle-enhanced coolants in machining: mechanism, application, and prospects

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0769-8

Abstract: Nanoparticle-enhanced coolants (NPECs) are increasingly used in minimum quantity lubrication (MQL) machiningFirst, the laws of influence of nano-enhanced phases and base fluids on the processing performance are

Keywords： nanoparticle-enhanced coolant     minimum quantity lubrication     biolubricant     thermophysical properties    

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An Integrated Framework for Geothermal Energy Storage with CO2 Sequestration and Utilization Article

Yueliang Liu,Ting Hu,Zhenhua Rui,Zheng Zhang,Kai Du,Tao Yang,Birol Dindoruk,Erling Halfdan Stenby,Farshid Torabi,Andrey Afanasyev

Engineering 2023, Volume 30, Issue 11,   Pages 121-130 doi: 10.1016/j.eng.2022.12.010

Abstract:

Subsurface geothermal energy storage has greater potential than other energy storage strategies inMoreover, the use of CO2 plumes for geothermal energy storage mitigates the greenhouse effectIn this work, an integrated framework is proposed for synergistic geothermal energy storage and CO2 is first injected into geothermal layers for energy accumulationWith the assistance of geothermal energy, the geological utilization efficiency of CO2 is

Keywords： Geothermal energy storage     CO2 sequestration     Carbon neutrality     Large-scale     CO2 utilization    

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A review on the application of nanofluids in enhanced oil recovery

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1165-1197 doi: 10.1007/s11705-021-2120-4

Abstract: Enhanced oil recovery (EOR) has been widely used to recover residual oil after the primary or secondary

Keywords： nanofluid     EOR mechanism     nanoparticle adsorption     interface property     internal property    

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Generation of enhanced stability of SnO/In(OH)/InP for photocatalytic water splitting by SnO protection

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 710-720 doi: 10.1007/s11708-021-0764-x

Abstract: paper, it is demonstrated that the stability and activity of the InP-based catalyst are effectively enhanced

Keywords： SnO/In(OH)3/InP photocatalyst     enhanced activity and stability for water splitting     corrosion    

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CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Frontiers in Energy 2023, Volume 17, Issue 3,   Pages 428-445 doi: 10.1007/s11708-023-0865-9

Abstract: In this work, using fractured shale cores, isothermal adsorption experiments and core flooding tests were conducted to investigate the performance of injecting different gases to enhance shale gas recovery and CO2 geological storage efficiency under real reservoir conditions. The adsorption process of shale to different gases was in agreement with the extended-Langmuir model, and the adsorption capacity of CO2 was the largest, followed by CH4, and that of N2 was the smallest of the three pure gases. In addition, when the CO2 concentration in the mixed gas exceeded 50%, the adsorption capacity of the mixed gas was greater than that of CH4, and had a strong competitive adsorption effect. For the core flooding tests, pure gas injection showed that the breakthrough time of CO2 was longer than that of N2, and the CH4 recovery factor at the breakthrough time (RCH4) was also higher than that of N2. The RCH4 of CO2 gas injection was approximately 44.09%, while the RCH4 of N2 was only 31.63%. For CO2/N2 mixed gas injection, with the increase of CO2 concentration, the RCH4 increased, and the RCH4 for mixed gas CO2/N2 = 8:2 was close to that of pure CO2, about 40.24%. Moreover, the breakthrough time of N2 in mixed gas was not much different from that when pure N2 was injected, while the breakthrough time of CO2 was prolonged, which indicated that with the increase of N2 concentration in the mixed gas, the breakthrough time of CO2 could be extended. Furthermore, an abnormal surge of N2 concentration in the produced gas was observed after N2 breakthrough. In regards to CO2 storage efficiency (Sstorage-CO2), as the CO2 concentration increased, Sstorage-CO2 also increased. The Sstorage-CO2 of the pure CO2 gas injection was about 35.96%, while for mixed gas CO2/N2 = 8:2, Sstorage-CO2 was about 32.28%.

Keywords： shale gas     gas injection     competitive adsorption     enhanced shale gas recovery     CO2 geological    

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A MYB-INDUCED MECHANISM FOR ENHANCED ASCORBATE IN RED-FLESHED APPLES

Richard V. ESPLEY, Kuilin WANG

Frontiers of Agricultural Science and Engineering   Pages 356-357 doi: 10.15302/J-FASE-2021381

Abstract: These red-fleshed apples have enhanced concentrations of both anthocyanins and ascorbate, both of which
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Gain-enhanced reconfigurable radiation array with mechanically driven system and directive elements

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0716-0

Abstract: However, conventional antennas with constant phase distributions cannot achieve enhanced gains in differentarray (RRA) based on miniaturized elements and a mechanically reconfigurable system to obtain gain-enhancedof freedom to realize the size and phase distribution reconfiguration simultaneously to validate the enhanced

Keywords： mechanism     reconfigurable radiation array (RRA)     compact state     deployed state     enhanced gain    

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Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2088-2100 doi: 10.1007/s11705-023-2352-6

Abstract: Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Keywords： nickel ferrite conductivity     carbon oxygen vacancies    

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Title Author Date Type Operation

A novel flow-resistor network model for characterizing enhanced geothermal system heat reservoir

Jian GUO, Wenjiong CAO, Yiwei WANG, Fangming JIANG

Journal Article

The Basic Characteristics of the Yangbajing Geothermal Field-A Typical High Temperature Geothermal System

Duo Ji

Journal Article

Strategic analysis of China’s geothermal energy industry

Hao GONG, Baicun WANG, Haijun LIANG, Zuoxian LUO, Yaofeng CAO

Journal Article

Thermo-economic analysis of a direct supercritical CO electric power generation system using geothermal

Journal Article

A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction

Wenjiong CAO, Wenbo HUANG, Guoling WEI, Yunlong JIN, Fangming JIANG

Journal Article

Development Strategy for Co-mining of the Deep Mineral and Geothermal Resources

Cai Meifeng, Duo Ji, Chen Xiangsheng, Mao Jingwen, Tang Chun´an, Liu Zhiqiang, Ji Hongguang, Ren Fenhua, Guo Qifeng, Li Peng

Journal Article

Large-scale geo-energy development: Sustainability impacts

Li JIANG,Liandong ZHU,Erkki HILTUNEN

Journal Article

Nanoparticle-enhanced coolants in machining: mechanism, application, and prospects

Journal Article

An Integrated Framework for Geothermal Energy Storage with CO2 Sequestration and Utilization

Yueliang Liu,Ting Hu,Zhenhua Rui,Zheng Zhang,Kai Du,Tao Yang,Birol Dindoruk,Erling Halfdan Stenby,Farshid Torabi,Andrey Afanasyev

Journal Article

A review on the application of nanofluids in enhanced oil recovery

Journal Article

Generation of enhanced stability of SnO/In(OH)/InP for photocatalytic water splitting by SnO protection

Journal Article

CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Journal Article

A MYB-INDUCED MECHANISM FOR ENHANCED ASCORBATE IN RED-FLESHED APPLES

Richard V. ESPLEY, Kuilin WANG

Journal Article

Gain-enhanced reconfigurable radiation array with mechanically driven system and directive elements

Journal Article

Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Journal Article