Thermodynamic analysis of solar energy integrated underground coal gasification in the context of cleaner fossil power generation

Shrivastava, Ankan; Vairakannu, Prabu

doi:10.1016/j.enconman.2015.12.009

Cited by 21 publications

(8 citation statements)

References 28 publications

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“…The calculations in this work show that the cost of electricity can be as low as 20 €/MWh, which is the same value as is presented in the work by Pei et al [22]. It has to be, however, considered that energy loss in a UCG process typically occurs due to water influx, underground cavity pressure drop, gas loss to the surrounding strata, and high temperature gasifying medium, which raises the cost of operation and lowers the product gas quality and profit [23]. It should also be considered that adaptations during the course of operation will be performed and that the syngas quality will vary from time to time.…”

Section: Ucg Economic Analysissupporting

confidence: 58%

Underground coal gasification - the Velenje Coal Mine energy and economic calculations

Konovšek¹,

Praunseis²,

Avsec³

et al. 2017

CI&CEQ

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Article Highlights • Energy and economic calculations for underground coal gasification were performed • The location for the pilot experiment in Velenje Coal Mine was reviewed • A new procedure for the estimation of the energy efficiency was proposed • The energy analyses for different examples of coal exploitation were compared • The viability of the underground coal gasification project in Velenje was determined

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Section: Ucg Economic Analysissupporting

confidence: 58%

Underground coal gasification - the Velenje Coal Mine energy and economic calculations

Konovšek¹,

Praunseis²,

Avsec³

et al. 2017

CI&CEQ

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“…A good temperature match inside the cooler is realized, and the exergy loss is reduced. A comparison between the steam Rankine cycle and the sCO 2 cycle for power generation from solar energy indicated that the net thermal efficiency of the sCO 2 cycle was 32.9%, while it was 28.2% for the steam Rankine cycle (Shrivastava and Prabu, 2016).…”

Section: Concentrated Solor Power Systemmentioning

confidence: 99%

System Design and Application of Supercritical and Transcritical CO2 Power Cycles: A Review

2021

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Improving energy efficiency and reducing carbon emissions are crucial for the technological advancement of power systems. Various carbon dioxide (CO2) power cycles have been proposed for various applications. For high-temperature heat sources, the CO2 power system is more efficient than the ultra-supercritical steam Rankine cycle. As a working fluid, CO2 exhibits environmentally friendly properties. CO2 can be used as an alternative to organic working fluids in small- and medium-sized power systems for low-grade heat sources. In this paper, the main configurations and performance characteristics of CO2 power systems are reviewed. Furthermore, recent system improvements of CO2 power cycles, including supercritical Brayton cycles and transcritical Rankine cycles, are presented. Applications of combined systems and their economic performance are discussed. Finally, the challenges and potential future developments of CO2 power cycles are discussed. CO2 power cycles have their advantages in various applications. As working fluids must exhibit environmentally-friendly properties, CO2 power cycles provide an alternative for power generation, especially for low-grade heat sources.

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“…The rate of fuel's conversion, da/dt, was the linear function of a temperature-dependent rate constant and function of conversion, which was described as k(T) and f(a), respectively [17],…”

Section: Kinetic Theorymentioning

confidence: 99%

Catalytic characteristics of the pyrolysis of lignite over oil shale chars

2016

Applied Thermal Engineering

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Thermodynamic analysis of solar energy integrated underground coal gasification in the context of cleaner fossil power generation

Cited by 21 publications

References 28 publications

Underground coal gasification - the Velenje Coal Mine energy and economic calculations

Underground coal gasification - the Velenje Coal Mine energy and economic calculations

System Design and Application of Supercritical and Transcritical CO2 Power Cycles: A Review

Catalytic characteristics of the pyrolysis of lignite over oil shale chars

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