skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Operating Characteristics of Metal Hydride-Based Solar Energy Storage Systems

Journal Article · · Sustainability (Basel)
DOI:https://doi.org/10.3390/su132112117· OSTI ID:1828993

Thermochemical energy storage systems, based on a high-temperature metal hydride coupled with a low-temperature metal hydride, represent a valid option to store thermal energy for concentrating solar power plant applications. The operating characteristics are investigated for a tandem hydride bed energy storage system, using a transient lumped parameter model developed to identify the technical performance of the proposed system. The results show that, without operational control, the system undergoes a thermal ratcheting process, causing the metal hydride concentrations to accumulate hydrogen in the high-temperature bed over time, and deplete hydrogen in the low temperature. This unbalanced system is compared with a ’thermally balanced’ system, where the thermal ratcheting is mitigated by thermally balancing the overall system. The analysis indicates that thermally balanced systems stabilize after the first few cycles and remain so for long-term operation, demonstrating their potential for practical thermal energy storage system applications.

Research Organization:
Savannah River Site (SRS), Aiken, SC (United States); Savannah River National Laboratory (SRNL), Aiken, SC (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
EE0007118; 89303321CEM000080
OSTI ID:
1828993
Alternate ID(s):
OSTI ID: 1829801
Report Number(s):
SRNL-STI-2021-00514; SUSTDE; PII: su132112117
Journal Information:
Sustainability (Basel), Journal Name: Sustainability (Basel) Vol. 13 Journal Issue: 21; ISSN 2071-1050
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Switzerland
Language:
English

References (27)

Insights from the operation of Solar One and their implications for future central receiver plants journal January 1991
Development of thermal energy storage technology using metal hydrides journal February 1983
Review on thermal energy storage with phase change materials and applications journal February 2009
The development, testing and optimization of energy storage materials based on the MgH2Mg system journal July 1993
Modeling of a thermal energy storage system based on coupled metal hydrides (magnesium iron – sodium alanate) for concentrating solar power plants journal August 2017
Destabilization of lithium hydride and the thermodynamic assessment of the Li–Al–H system for solar thermal energy storage journal January 2016
Future perspectives of thermal energy storage with metal hydrides journal March 2019
Magnesium based materials for hydrogen based energy storage: Past, present and future journal March 2019
A thermal energy storage prototype using sodium magnesium hydride journal January 2019
Techno-economic analysis of screening metal hydride pairs for a 910 MWhth thermal energy storage system journal May 2019
Thermal energy storage technologies and systems for concentrating solar power plants journal August 2013
Metal hydride based thermal energy storage system requirements for high performance concentrating solar power plants journal November 2016
Techno-Economic Assessment of Destabilized Li Hydride Systems for High Temperature Thermal Energy Storage journal April 2020
Hierarchical methodology for modeling hydrogen storage systems. Part I: Scoping models journal March 2009
Investigation on LiBH4-CaH2 composite and its potential for thermal energy storage journal January 2017
Screening analysis of metal hydride based thermal energy storage systems for concentrating solar power plants journal October 2014
A critical review of high-temperature reversible thermochemical energy storage systems journal November 2019
Hydriding characteristics of NaMgH 2 F with preliminary technical and cost evaluation of magnesium-based metal hydride materials for concentrating solar power thermal storage journal January 2014
High temperature thermal energy storage in the CaAl2 system journal February 2018
Metal hydride material requirements for automotive hydrogen storage systems journal August 2013
The application of Mg-based metal-hydrides as heat energy storage systems journal May 2000
An overview of thermal energy storage systems journal February 2018
Titanium Hydride for High-Temperature Thermal Energy Storage in Solar-Thermal Power Stations* journal January 1994
Metal Hydrides for High-Temperature Power Generation journal August 2015
Magnesium hydride for thermal energy storage in a small-scale solar-thermal power station journal January 1991
Technology Advancements for Next Generation Falling Particle Receivers journal January 2014
Simulation of high temperature thermal energy storage system based on coupled metal hydrides for solar driven steam power plants journal January 2018

Similar Records

Technical challenges and future direction for high-efficiency metal hydride thermal energy storage systems
Journal Article · Tue Mar 29 00:00:00 EDT 2016 · Applied Physics. A, Materials Science and Processing · OSTI ID:1828993

Metal hydride based thermal energy storage system requirements for high performance concentrating solar power plants
Journal Article · Sun Oct 04 00:00:00 EDT 2015 · International Journal of Hydrogen Energy · OSTI ID:1828993

Solar Receiver with Integrated Thermal Storage for a Supercritical Carbon Dioxide Power Cycle
Technical Report · Tue Jul 19 00:00:00 EDT 2022 · OSTI ID:1828993

Related Subjects