Geothermal potential of granites: Case study- Kaymaz and Sivrihisar (Eskisehir region) Western Anatolia

Chandrasekharam, D.; Baba, Alper; Ayzit, Tolga; Singh, Hemant Kumar

doi:10.1016/j.renene.2022.07.035

Cited by 6 publications

(3 citation statements)

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“…Fluids such as water or supercritical carbon dioxide are then injected into these fractures to facilitate the release of the heat trapped in the rock, making it available for a variety of applications such as power generation, domestic heating, and greenhouse farming. A single well in such an EGS system has the potential to produce approximately 3 to 4 megawatts of electricity (MWe) and 20 to 40 megawatts of heat (MWt) (Cooper et al, 2010;Breede et al, 2013;Koelbel and Genter, 2017;Pan et al, 2019;Chandrasekharam and Baba, 2021;Chandrasekharam et al, 2022;Baba and Chandrasekharam, 2022). In the proposed system, the heat produced by the EGS is transferred to a low boiling point fluid via a heat exchanger.…”

Section: Discussionmentioning

confidence: 99%

“…(1) where, A is the heat production of the granite, ρ(g/cm 3 ) is the density of the granite (the average density for granitoid is 2.7 g/cm 3 ; Cooper et al, 2010;Chandrasekharam et al, 2022), CU is uranium (ppm), CTh is thorium (ppm), and CK is potassium (%) Deep geothermal investigations based on heat flux data are the main method of exploring the deep thermal state of the lithosphere. Heat flux represents the heat that is transferred by conduction per unit area per unit of time from the Earth's interior to the surface and then radiated into space.…”

Section: Methods Of Studymentioning

confidence: 99%

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Current status and potentials of enhanced geothermal system in the Eastern Pontide Orogenic Belt, Turkey

Şener

2024

Int. J. Renew. Energy Dev.

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The radioactive decay of isotopes is one of the most important sources of heat in the Earth's interior. The main radiogenic elements in the crust are U, Th, and K in granitoids. Radiogenic granites are becoming increasingly important as they support the development of the renewable energy sector. This study provides an in-depth review of the development of Enhanced Geothermal Systems (EGS) technology. Many countries, such as France and the UK, have initiated and contributed to energy production using EGS technology. In addition, this study calculates the potential production capacity of radiogenic granites in the Eastern Pontide Oraganic Belt (EPOB) and assesses their significant contribution to the Turkish economy in line with the Sustainable Development Goals (SDGs). The total area of radiogenic granites within the EBOP is 7116.35 km2 and these granites contain average concentrations of U 3.25 ppm, Th 16.44 ppm, and K 3.7%. The plutons studied can generally be classified as medium to low heat producing granitoids. Ayeser, Camiboğazı, and Ayder (3.36-6.98 µW/m3), which are close to the average heat production value of the continental crust (5 μW/m3), may be suitable areas for EGS. Currently, EBOP granites have the capacity to produce 61 x 109 kWh of electricity. In addition to electricity, heat from granites can be used for other applications such as space heating and greenhouse cultivation.

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Section: Discussionmentioning

confidence: 99%

Section: Methods Of Studymentioning

confidence: 99%

Current status and potentials of enhanced geothermal system in the Eastern Pontide Orogenic Belt, Turkey

Şener

2024

Int. J. Renew. Energy Dev.

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“…There is a need of more scientific support to improve the technology for better using renewable energy (including bioenergy) in rural areas. Although existing studies have provided some useful experiences and implications for improving the use of renewable energy in agriculture [10], there is still a distance ahead.…”

Section: Insufficient Scientific Supportmentioning

confidence: 99%

How can rural youth better benefit from renewable energy? A perspective from Sustainable Development Goals

Liu

2022

Discov Energy

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A sustainable clean energy source for mitigating CO2 emissions: numerical simulation of Hamit granitoid, Central Anatolian Massif

Ayzit,

Singh,

Chandrasekharam

et al. 2024

Geomech. Geophys. Geo-energ. Geo-resour.

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Türkiye relies on coal-fired power plants for approximately 18 GW of annual electricity generation, with significantly higher CO2 emissions compared to geothermal power plants. On the other hand, geothermal energy resources, such as Enhanced Geothermal Systems (EGS) and hydrothermal systems, offer low CO2 emissions and baseload power, making them attractive clean energy sources. Radiogenic granitoid, with high heat generation capacity, is a potential and cleaner energy source using EGS. The Anatolian plateau hosts numerous tectonic zones with plutonic rocks containing high concentrations of radioactive elements, such as the Central Anatolian Massif. This study evaluates the power generation capacity of the Hamit granitoid (HG) and presents a thermo-hydraulic-mechanical (THM) model for a closed-loop geothermal well for harnessing heat from this granitoid. A sensitivity analysis based on fluid injection rates and wellbore length emphasizes the importance of fluid resident time for effective heat extraction. Closed-loop systems pose fewer geomechanical risks than fractured systems and can be developed through site selection, system design, and monitoring. Geothermal wellbore casing material must withstand high temperatures, corrosive environments, and should have low thermal conductivity. The HG exhibits the highest heat generation capacity among Anatolian granitoid intrusions and offers potential for sustainable energy development through EGS, thereby reducing CO2 emissions.

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Geothermal potential of granites: Case study- Kaymaz and Sivrihisar (Eskisehir region) Western Anatolia

Cited by 6 publications

References 65 publications

Current status and potentials of enhanced geothermal system in the Eastern Pontide Orogenic Belt, Turkey

Current status and potentials of enhanced geothermal system in the Eastern Pontide Orogenic Belt, Turkey

How can rural youth better benefit from renewable energy? A perspective from Sustainable Development Goals

A sustainable clean energy source for mitigating CO2 emissions: numerical simulation of Hamit granitoid, Central Anatolian Massif

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