Simulation of high temperature thermal energy storage system based on coupled metal hydrides for solar driven steam power plants

d'Entremont, Anna; Corgnale, Claudio; Hardy, Bruce; Zidan, Ragaiy

doi:10.1016/j.ijhydene.2017.11.100

Title: Simulation of high temperature thermal energy storage system based on coupled metal hydrides for solar driven steam power plants

Journal Article · Thu Jan 11 00:00:00 EST 2018 · International Journal of Hydrogen Energy

DOI:https://doi.org/10.1016/j.ijhydene.2017.11.100· OSTI ID:1426658

d'Entremont, Anna ^[1]; Corgnale, Claudio ^[2]; Hardy, Bruce ^[1]; Zidan, Ragaiy ^[1]

Savannah River Site (SRS), Aiken, SC (United States)
Savannah River Site (SRS), Aiken, SC (United States); Greenway Energy LLC, Aiken, SC (United States)

Concentrating solar power plants can achieve low cost and efficient renewable electricity production if equipped with adequate thermal energy storage systems. Metal hydride based thermal energy storage systems are appealing candidates due to their demonstrated potential for very high volumetric energy densities, high exergetic efficiencies, and low costs. The feasibility and performance of a thermal energy storage system based on NaMgH₂F hydride paired with TiCr_1.6Mn_0.2 is examined, discussing its integration with a solar-driven ultra-supercritical steam power plant. The simulated storage system is based on a laboratory-scale experimental apparatus. It is analyzed using a detailed transport model accounting for the thermochemical hydrogen absorption and desorption reactions, including kinetics expressions adequate for the current metal hydride system. The results show that the proposed metal hydride pair can suitably be integrated with a high temperature steam power plant. The thermal energy storage system achieves output energy densities of 226 kWh/m³, 9 times the DOE SunShot target, with moderate temperature and pressure swings. Also, simulations indicate that there is significant scope for performance improvement via heat-transfer enhancement strategies.

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Research Organization:: Savannah River Site (SRS), Aiken, SC (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; Curtin Univ., Perth (Australia)

Grant/Contract Number:: DE-AC09-08SR22470

OSTI ID:: 1426658

Alternate ID(s):: OSTI ID: 1548947

Report Number(s):: SRNL-STI-2018-00040; PII: S0360319917344804; TRN: US1802707

Journal Information:: International Journal of Hydrogen Energy, Vol. 43, Issue 2; ISSN 0360-3199

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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Cited By (2)

An experimental high temperature thermal battery coupled to a low temperature metal hydride for solar thermal energy storage Poupin, Lucas; Humphries, Terry D.; Paskevicius, Mark Sustainable Energy & Fuels, Vol. 4, Issue 1 https://doi.org/10.1039/c9se00538b	journal	January 2020
The Impact of Active and Passive Thermal Management on the Energy Storage Efficiency of Metal Hydride Pairs Based Heat Storage Nyamsi, Serge Nyallang; Tolj, Ivan Energies, Vol. 14, Issue 11 https://doi.org/10.3390/en14113006	journal	May 2021

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14 SOLAR ENERGY
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