Two-objective optimization of a hybrid solar-geothermal system with thermal energy storage for power, hydrogen and freshwater production based on transcritical CO2 cycle

Li, Hua-Bin; Tao, Ye; Zhang, Yang; Fang, Hong

doi:10.1016/j.renene.2021.10.080

Cited by 60 publications

(7 citation statements)

References 57 publications

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“…Several other types of ATES systems, including high-temperature seasonal ATES, typically operate at higher temperatures than low-temperature systems and are used for heating and cooling [113]. Hybrid ATES systems combine ATES with other renewable energy sources, such as solar thermal or geothermal energy, to increase their efficiency and overall performance [114]. Additionally, there are also shallow ATES systems that use a network of underground pipes to store heat or cold in the soil layers close to the surface [115], and deep ATES systems that store heat or cold in deeper aquifers [116].…”

Section: Sensible Tesmentioning

confidence: 99%

“…Ocean energy, another renewable source, is also examined in combination with both sensible and latent TES systems [16,94,145]. Some studies investigate hybrid renewable energy systems incorporating multiple renewable sources, such as solar-geothermal, ocean-solar, and solar-wind-ocean systems [105,107,112,114,146,147]. These hybrid systems typically involve sensible or latent TES to optimize the combined use of different renewable resources.…”

Section: Combined Renewable Energy-thermal Energy Storage Systemsmentioning

confidence: 99%

“…Similarly, solar and geothermal energies can be used as a di-generation system in some areas to maximize the generated power. A recent study by Li, Tao, Zhang, and Fu [114] illuminates a suite of opportunities inherent in their innovative solar-geothermal hybrid system. Foremost among these is the efficient utilization of renewable resources.…”

Section: Renewable Polygeneration/tes Systemmentioning

confidence: 99%

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Combined “Renewable Energy–Thermal Energy Storage (RE–TES)” Systems: A Review

Elkhatat

Al‐Muhtaseb

2023

Energies

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Current industrial civilization relies on conventional energy sources and utilizes large and inefficient energy conversion systems. Increasing concerns regarding conventional fuel supplies and their environmental impacts (including greenhouse gas emissions, which contribute to climate change) have promoted the importance of renewable energy (RE) sources for generating electricity and heat. This comprehensive review investigates integrating renewable energy sources (RES) with thermal energy storage (TES) systems, focusing on recent advancements and innovative approaches. Various RES (including solar, wind, geothermal, and ocean energy sources) are integrated with TES technologies such as sensible and latent TES systems. This review highlights the advantages and challenges of integrating RES and TES systems, emphasizing the importance of hybridizing multiple renewable energy sources to compensate for their deficiencies. Valuable outputs from these integrated systems (such as hydrogen production, electric power and freshwater) are discussed. The overall significance of RES–TES hybrid systems in addressing global energy demand and resource challenges is emphasized, demonstrating their potential to substitute fossil-fuel sources. This review provides a thorough understanding of the current state of RES–TES integration and offers insights into future developments in optimizing the utilization of renewable energy sources.

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Section: Sensible Tesmentioning

confidence: 99%

Section: Combined Renewable Energy-thermal Energy Storage Systemsmentioning

confidence: 99%

Section: Renewable Polygeneration/tes Systemmentioning

confidence: 99%

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Combined “Renewable Energy–Thermal Energy Storage (RE–TES)” Systems: A Review

Elkhatat

Al‐Muhtaseb

2023

Energies

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“…Their results illustrated that the transcritical CO 2 system produces more power than others. Li et al 35 researched a geothermal cycle combined with a thermal storage unit from thermodynamic and economic aspects. They optimized their proposed system, and at the optimum point, thermal efficiency and unit cost of production were calculated at 23.35% and 17.07 $/GJ, respectively.…”

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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“…Li et al [121] suggested a trigeneration system based on a transcritical CO 2 cycle for producing hydrogen, electric power, and fresh water powered by solar-geothermal RERs. Thermoelectric generators and HDH-WDSs utilized the waste heat from the transcritical CO 2 cycle.…”

Section: Geothermal Energy Resourcesmentioning

confidence: 99%

Energy Storage for Water Desalination Systems Based on Renewable Energy Resources

et al. 2023

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Recently, water desalination (WD) has been required for the supply of drinking water in a number of countries. Various technologies of WD utilize considerable thermal and/or electrical energies for removing undesirable salts. Desalination systems now rely on renewable energy resources (RERs) such as geothermal, solar, tidal, wind power, etc. The intermittent nature and changeable intensity constrain the wide applications of renewable energy, so the combination of energy storage systems (ESSs) with WD in many locations has been introduced. Thermal energy storage (TES) needs a convenient medium for storing and hence reuses energy. The present work provides a good background on the methods and technologies of WD. Furthermore, the concepts of both thermal and electrical energy storage are presented. In addition, a detailed review of employing ESSs in various WD processes driven by RERs is presented. The integration of energy storage with water desalination systems (WDSs) based on renewable energy has a much better capability, economically and environmentally, compared with conventional desalination systems. The ESSs are required to guarantee a constant supply of fresh water over the day.

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Two-objective optimization of a hybrid solar-geothermal system with thermal energy storage for power, hydrogen and freshwater production based on transcritical CO2 cycle

Cited by 60 publications

References 57 publications

Combined “Renewable Energy–Thermal Energy Storage (RE–TES)” Systems: A Review

Combined “Renewable Energy–Thermal Energy Storage (RE–TES)” Systems: A Review

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

Energy Storage for Water Desalination Systems Based on Renewable Energy Resources

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