Energy, exergy, economic and environmental (4E) analyses of a geothermal power plant with NCGs reinjection

Shamoushaki, Moein; Fiaschi, Daniele; Manfrida, Giampaolo; Talluri, Lorenzo

doi:10.1016/j.energy.2021.122678

Cited by 14 publications

(8 citation statements)

References 35 publications

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“…A combined geothermal system linked with LNG, Proton Exchange Membrane, and Organic Rankine Cycle (ORC) units has been evaluated from thermodynamic and exergoeconomic aspects by Mehdikhani et al 32 The thermal efficiency of their designed cycle has increased by 3.18% compared to previous similar studies. A geothermal cycle with district heating and total reinjection of noncondensable gases has been evaluated from energetic and economical, and environmental points of view by Shamoushaki et al 33 They assessed this system in subcritical and supercritical cases, and the Levelized Cost of Energy for subcritical is obtained at 5.52

{\rm{c}}{\rm{\unicode{x020AC}}}/\text{kWh}

and at supercritical at 6.96

{\rm{c}}{\rm{\unicode{x020AC}}}/\text{kWh}

.…”

Section: Literature Surveymentioning

confidence: 99%

The feasibility study of the production of Bitcoin with geothermal energy: Case study

Ehyaei,

Esmaeilion,

Shamoushaki

et al. 2023

Energy Science & Engineering

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In this paper, a multigeneration cycle of electricity, cooling, and Bitcoin whose energy source is geothermal, has been subjected to energy, exergy, and economic analyses. The cycle under consideration includes the steam cycle (upstream cycle), the carbon dioxide cycle (downstream cycle), and the liquid–gas line to absorb the heat dissipated by the carbon dioxide cycle. In this cycle, the steam cycle condenser acts as the carbon dioxide cycle evaporator. Part of the electricity generated by this cycle is used to generate Bitcoins. Energy and exergy efficiencies at baseline (excluding Bitcoin production) are 45.8% and 38.1%, respectively. In this cycle, if more power is spent on producing Bitcoin as a product, the energy and exergy efficiencies of the cycle are reduced. Because Bitcoin itself is not valuable in terms of energy and exergy. Considering the average price of Bitcoin during the years 2015–2022 and if 100% of the electricity generated by the system is spent on Bitcoin production, the payback period in 2018, 2021, and 2022 when the price of Bitcoin is equal to $13,412.4, $21,398.8, and $47,743.0, respectively, are less than the baseline. Therefore, the production of Bitcoin with a variety of renewable energies can be considered as a solution. Of course, it should be noted that large changes in the price of Bitcoin can affect the issue of economic benefit.

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{\rm{c}}{\rm{\unicode{x020AC}}}/\text{kWh}

and at supercritical at 6.96

{\rm{c}}{\rm{\unicode{x020AC}}}/\text{kWh}

.…”

Section: Literature Surveymentioning

confidence: 99%

The feasibility study of the production of Bitcoin with geothermal energy: Case study

Ehyaei,

Esmaeilion,

Shamoushaki

et al. 2023

Energy Science & Engineering

Self Cite

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“…The following assumptions are noticed for the energy assessment [35][36][37][38][39]: 1. The system operates at steady-state conditions.…”

Section: Energy and Mass Balance Assessmentmentioning

confidence: 99%

Energy, exergy, and economic analyses of a novel biomass-based multigeneration system integrated with multi-effect distillation, electrodialysis, and LNG tank

et al. 2022

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“…The exergoenvironmental analysis is based on a combination of exergy and environmental parameters. This investigation is based on the ratio of exergy destruction rate to the sum of input exergy rates 67–70 :

{f}_{{ei}}=\frac{{\dot{E}}_{D}}{\sum {\dot{E}}_{{in}}},

where

{f}_{{ei}}

is the exergoenvironmental factor,‎

{\dot{E}}_{D}

denotes the exergy destruction rate,

{\dot{E}}_{{in}}

the rate of input exergy, and subscripts ei , in , and D are exergy input, input, and destruction, respectively.…”

Section: Mathematical Modelingmentioning

confidence: 99%

Section: Exergoenvironmental Analysismentioning

confidence: 99%

Assessment of a novel geothermal powered polygeneration system with zero liquid discharge

Afshari

Ehyaei

Esmaeilion

et al. 2022

Energy Science & Engineering

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Energy, exergy, economic, exergoenvironmental, and environmental analyses are reported for a novel polygeneration system consisting of a geothermal cycle, a CO2 cycle, a reverse osmosis unit, an electrodialysis unit, a lithium bromide absorption chiller, and a liquefaction unit for natural gas. The proposed system is able to produce electricity, cooling, desalinated water, sodium hydroxide, and hydrogen. To study the environmental aspects of the proposed facility, the associated social cost of air pollution is determined. This parameter implies a comparison between nonrenewable and renewable energy systems to produce the same amount of electricity, while the amount of air pollutants generated and their associated costs are considered. Three scenarios are introduced. The results indicate that the system produces 631 GWh/year electrical energy, 465 GWh/year cooling, 6.22 ‎ton/year NaClO, 1.57 × 108 m3/year hydrogen, and 386,000 m3/year potable water for a geothermal working fluid supplied with mass flow rate of 100 kg/s at a temperature of 150°C and a pressure of 457.5 kPa. Also, the calculated values of the energy and exergy efficiencies are 58.3% and 94.2%, respectively. The payback period is determined to be 5.3 years. The net present value ‎is found to be ‎113.6 million US$ which is lower than that for all the nonrenewable‐based scenarios considered.

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Energy, exergy, economic and environmental (4E) analyses of a geothermal power plant with NCGs reinjection

Cited by 14 publications

References 35 publications

The feasibility study of the production of Bitcoin with geothermal energy: Case study

The feasibility study of the production of Bitcoin with geothermal energy: Case study

Energy, exergy, and economic analyses of a novel biomass-based multigeneration system integrated with multi-effect distillation, electrodialysis, and LNG tank

Assessment of a novel geothermal powered polygeneration system with zero liquid discharge

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