Study and multi-objective optimization of integrating an energetic solar thermal application, a supercritical process, and a high-temperature electrolyser

Cao, Yan; Elmasry, Yasser; Abed, Azher M.; Singh, Pradeep Kumar; Aouaini, Fatma; Bouzgarrou, Souhail Mohamed; Aly, Ayman A.; Wae-hayee, Makatar; Galal, Ahmed M.

doi:10.1016/j.csite.2022.102530

Cited by 6 publications

(1 citation statement)

References 42 publications

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“…According to the data, there was a significant increase in the thermal efficiency and net output power close to the critical temperature, while the overall compressor/pump inlet temperature decreased. A recompression supercritical carbon dioxide Brayton cycle, coupled with a solar power tower, was proposed and studied by Cao et al (2022). Two energy-storage stages were used to increase the stability of the solar subsystem for continuous daily operation.…”

Section: Proposed System Descriptionmentioning

confidence: 99%

Estudio comparativo de un ciclo transcrítico de dióxido de carbono alimentado por un único ciclo geotérmico flash en los modos de funcionamiento con/sin economizador

Aryanfar,

García Alcaraz,

Blanco Fernandez

et al. 2023

CT&F Cienc. Tecnol. Futuro

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Renewable energy, particularly geothermal energy, is on the rise globally. It has been demonstrated that recovering heat lost during geothermal cycles is essential due to the inefficiency of these cycles. This paper pproposes a combined power generation cycle using EES software to model a single-flash geothermal cycle, and a trans-critical carbon dioxide cycle. The study compares the system's performance during its "Without Economizer" and "With Economizer" operational stages. The impact of the economizer on the system's output metrics, including the net power output, energy efficiency, and exergy efficiency, was examined. The results show that the "With Economizer" system's net power output increased from 451.3 kW to 454 kW. The energy efficiency difference between the two systems is based on the first law of thermodynamics, where the value ofthe "Without Economizer" system is 6.036%, and the "With Economizer" system is 6.075%. The system without an economizer had an exergy efficiency value of 26.26%, whereas the system with an economizer reached 26.43%, based on the second law of thermodynamics. Installing the economizer increased the total economic cost rate of the system from 0.225M$/Year to 0.2294M$/Year, which increased the product cost rate from 15.82$/GJ to 16.02$/GJ.

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Section: Proposed System Descriptionmentioning

confidence: 99%