Utilization of carbon dioxide from coal-based power plants as a heat transfer fluid for electricity generation in enhanced geothermal systems (EGS)

Mohan, Arun Ram; Turaga, Uday; Shembekar, Vishakha; Elsworth, Derek; Pisupati, Sarma V.

doi:10.1016/j.energy.2013.05.047

Cited by 35 publications

(11 citation statements)

References 22 publications

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“…Thus, the use of supercritical CO 2 (SCCO 2 ) instead of water as the heat extraction fluid was proposed . Since then, many studies on the feasibility of using CO 2 as the heat extraction fluid have been carried out …”

Section: Introductionmentioning

confidence: 99%

Effects of injection parameters on heat extraction performance of supercritical CO₂ in enhanced geothermal systems

Liu

et al. 2019

Energy Science & Engineering

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Supercritical CO 2 (SCCO 2 ) is considered as a promising alternative heat extraction fluid in the enhanced geothermal system (EGS) which can reduce atmospheric CO 2 emissions and water waste. However, the heat extraction performance of SCCO 2 is greatly affected by its thermophysical properties, which are high sensitivity to temperature/pressure. In this study, by considering the impacts of temperature and pressure on thermophysical properties of SCCO 2 , a thermo-hydro-mechanical coupling numerical model was established to investigate the effects of the initial reservoir temperature as well as the SCCO 2 injection pressure and temperature on heat extraction. The variations of reservoir permeability and mass productivity as well as the net heat extraction rate (HER) were simulated by implementing the model into COMSOL Multiphysics, which showed a good consistency compared with the hightemperature/pressure triaxial seepage experiments. Simulation results indicate that there are three distinct stages in mass productivity including the slow decline stage, the rapid increase stage, and the stabilization stage. Increasing the initial reservoir temperature or the injection temperature will reduce the net HER to varying degrees.Appropriate increase of the injection pressure and injection temperature can extend Stage 2 duration which can subsequently enhance the mass productivity and the net HER. Meanwhile, the higher injection pressure or the lower injection temperature will inhibit heat compensation within rock masses and accelerate the reservoir heat depletion. This study provides guidance for optimizing the injection parameters of CO 2 -EGS and aims to enhance the net HER while ensuring a reasonable reservoir production life. K E Y W O R D S enhanced geothermal system, heat extraction experiment, high temperature/pressure, numerical simulation, supercritical CO 2 How to cite this article: Li P, Wu Y, Liu J-F, et al. Effects of injection parameters on heat extraction performance of supercritical CO 2 in enhanced geothermal systems. Energy Sci Eng. 2019;7:3076-3094. https ://doi.

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Section: Introductionmentioning

confidence: 99%

Effects of injection parameters on heat extraction performance of supercritical CO₂ in enhanced geothermal systems

Liu

et al. 2019

Energy Science & Engineering

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“…Pruess [] compared the flow behavior, chemistry, and thermophysical properties of CO 2 and water for geothermal energy extraction and concluded that CO 2 is superior to water as a working fluid for EGS. Mohan et al [] explored the possibility of utilizing CO 2 as alternative geothermal fluid for the extraction of geothermal heat in arid regions and to simultaneously sequester CO 2 . Xu et al [] assessed the power generation and CO 2 sequestration ability of the Habanero geothermal field in the Cooper Basin of South Australia and suggested through their simulation that the major sequestration mechanisms are the storage in the fracture‐stimulation damage zone.…”

Section: Introductionmentioning

confidence: 99%

Features of CO₂ fracturing deduced from acoustic emission and microscopy in laboratory experiments

et al. 2016

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We conducted hydraulic fracturing (HF) experiments on 170 mm cubic granite specimens with a 20 mm diameter central hole to investigate how fluid viscosity affects HF process and crack properties. In experiments using supercritical carbon dioxide (SC‐CO2), liquid carbon dioxide (L‐CO2), water, and viscous oil with viscosity of 0.051–336.6 mPa · s, we compared the results for breakdown pressure, the distribution and fracturing mechanism of acoustic emission, and the microstructure of induced cracks revealed by using an acrylic resin containing a fluorescent compound. Fracturing with low‐viscosity fluid induced three‐dimensionally sinuous cracks with many secondary branches, which seem to be desirable pathways for enhanced geothermal system, shale gas recovery, and other processes.

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“…Harto et al estimate subsurface water losses to amount to about 1000 m 3 /TJ for EGS using air-cooling tower in surface [21], which is similar to the water consumption estimated by the Electric Power Research Institute [22]. This method would store the CO 2 emitted from, for example, fossil fuel power plants, helping address the critical challenge of CO 2 capture and storage and proposing a potential large-scale method CO 2 utilization [26]. The loss of CO 2 during a geothermal operation can be offset by carbon dioxide sequestration, which has been widely considered as a means for reducing anthropogenic CO 2 emissions to the atmosphere [25].…”

Section: Working Fluidsmentioning

confidence: 85%

“…The loss of CO 2 during a geothermal operation can be offset by carbon dioxide sequestration, which has been widely considered as a means for reducing anthropogenic CO 2 emissions to the atmosphere [25]. This method would store the CO 2 emitted from, for example, fossil fuel power plants, helping address the critical challenge of CO 2 capture and storage and proposing a potential large-scale method CO 2 utilization [26].…”

Section: Working Fluidsmentioning

confidence: 99%

A review on heat transfer and energy conversion in the enhanced geothermal systems with water/CO₂as working fluid

Zhang

et al. 2015

Int. J. Energy Res.

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Summary Enhanced geothermal systems (EGS) technology is regarded as the future of geothermal energy and could become a major energy source in the future. However, EGS technology is not well developed. The challenges of EGS technology development, such as the small heat‐recovery factors and water limitations, need to be addressed. A comprehensive understanding of heat transfer in the complex subsurface structures is crucial for energy management in the reservoir, and an accurate heat transfer model of the reservoir is a key tool to optimize heat extraction to improve the heat‐recovery factor. The use of CO2 as the EGS working fluid is regarded as an emerging technology to address water limitations. The analytical solutions, lab‐scale experiments, field‐scale modeling methods of water/CO2 fluid flow and heat transfer in the reservoir, and a thermodynamic analysis of the energy conversion system at the surface are reviewed in this paper. Based on the existing literature, future research should focus on improving our knowledge and optimizing the heat transfer performance in the reservoir. Moreover, the emerging design of a heat exchange network in the reservoir and CO2‐EGS could result from technology development. Copyright © 2015 John Wiley & Sons, Ltd.

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Utilization of carbon dioxide from coal-based power plants as a heat transfer fluid for electricity generation in enhanced geothermal systems (EGS)

Cited by 35 publications

References 22 publications

Effects of injection parameters on heat extraction performance of supercritical CO₂ in enhanced geothermal systems

Effects of injection parameters on heat extraction performance of supercritical CO₂ in enhanced geothermal systems

Features of CO₂ fracturing deduced from acoustic emission and microscopy in laboratory experiments

A review on heat transfer and energy conversion in the enhanced geothermal systems with water/CO₂as working fluid

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Utilization of carbon dioxide from coal-based power plants as a heat transfer fluid for electricity generation in enhanced geothermal systems (EGS)

Cited by 35 publications

References 22 publications

Effects of injection parameters on heat extraction performance of supercritical CO2 in enhanced geothermal systems

Effects of injection parameters on heat extraction performance of supercritical CO2 in enhanced geothermal systems

Features of CO2 fracturing deduced from acoustic emission and microscopy in laboratory experiments

A review on heat transfer and energy conversion in the enhanced geothermal systems with water/CO2as working fluid

Contact Info

Product

Resources

About

Effects of injection parameters on heat extraction performance of supercritical CO₂ in enhanced geothermal systems

Effects of injection parameters on heat extraction performance of supercritical CO₂ in enhanced geothermal systems

Features of CO₂ fracturing deduced from acoustic emission and microscopy in laboratory experiments

A review on heat transfer and energy conversion in the enhanced geothermal systems with water/CO₂as working fluid