DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Modeling of a thermal energy storage system based on coupled metal hydrides (magnesium iron – sodium alanate) for concentrating solar power plants

Abstract

Concentrating solar power plants represent low cost and efficient solutions for renewable electricity production only if adequate thermal energy storage systems are included. Metal hydride thermal energy storage systems have demonstrated the potential to achieve very high volumetric energy densities, high exergetic efficiencies, and low costs. The current work analyzes the technical feasibility and the performance of a storage system based on the high temperature Mg2FeH6 hydride coupled with the low temperature Na3AlH6 hydride. To accomplish this, a detailed transport model has been set up and the coupled metal hydride system has been simulated based on a laboratory scale experimental configuration. Proper kinetics expressions have been developed and included in the model to replicate the absorption and desorption process in the high temperature and low temperature hydride materials. The system showed adequate hydrogen transfer between the two metal hydrides, with almost complete charging and discharging, during both thermal energy storage and thermal energy release. The system operating temperatures varied from 450°C to 500°C, with hydrogen pressures between 30 bar and 70 bar. This makes the thermal energy storage system a suitable candidate for pairing with a solar driven steam power plant. The model results, obtained for the selected experimental configuration,more » showed an actual thermal energy storage system volumetric energy density of about 132 kWh/m3, which is more than 5 times the U.S. Department of Energy SunShot target (25 kWh/m3).« less

Authors:
 [1];  [2];  [2];  [1];  [1];  [2]
  1. Savannah River Site (SRS), Aiken, SC (United States)
  2. Savannah River Site (SRS), Aiken, SC (United States); Greenway Energy LLC, Aiken, SC (United States)
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org.:
USDOE Office of Environmental Management (EM); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1426657
Alternate Identifier(s):
OSTI ID: 1550036
Report Number(s):
SRNL-STI-2018-00039
Journal ID: ISSN 0360-3199; PII: S036031991731683X; TRN: US1802841
Grant/Contract Number:  
DE-AC09-08SR22470
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Hydrogen Energy
Additional Journal Information:
Journal Volume: 42; Journal Issue: 35; Journal ID: ISSN 0360-3199
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 25 ENERGY STORAGE; 29 ENERGY PLANNING, POLICY, AND ECONOMY; Metal hydrides; Concentrating solar power plants; Thermal energy storage; Transport models; Efficiency

Citation Formats

d'Entremont, A., Corgnale, C., Sulic, M., Hardy, B., Zidan, R., and Motyka, T. Modeling of a thermal energy storage system based on coupled metal hydrides (magnesium iron – sodium alanate) for concentrating solar power plants. United States: N. p., 2017. Web. doi:10.1016/j.ijhydene.2017.04.231.
d'Entremont, A., Corgnale, C., Sulic, M., Hardy, B., Zidan, R., & Motyka, T. Modeling of a thermal energy storage system based on coupled metal hydrides (magnesium iron – sodium alanate) for concentrating solar power plants. United States. https://doi.org/10.1016/j.ijhydene.2017.04.231
d'Entremont, A., Corgnale, C., Sulic, M., Hardy, B., Zidan, R., and Motyka, T. Thu . "Modeling of a thermal energy storage system based on coupled metal hydrides (magnesium iron – sodium alanate) for concentrating solar power plants". United States. https://doi.org/10.1016/j.ijhydene.2017.04.231. https://www.osti.gov/servlets/purl/1426657.
@article{osti_1426657,
title = {Modeling of a thermal energy storage system based on coupled metal hydrides (magnesium iron – sodium alanate) for concentrating solar power plants},
author = {d'Entremont, A. and Corgnale, C. and Sulic, M. and Hardy, B. and Zidan, R. and Motyka, T.},
abstractNote = {Concentrating solar power plants represent low cost and efficient solutions for renewable electricity production only if adequate thermal energy storage systems are included. Metal hydride thermal energy storage systems have demonstrated the potential to achieve very high volumetric energy densities, high exergetic efficiencies, and low costs. The current work analyzes the technical feasibility and the performance of a storage system based on the high temperature Mg2FeH6 hydride coupled with the low temperature Na3AlH6 hydride. To accomplish this, a detailed transport model has been set up and the coupled metal hydride system has been simulated based on a laboratory scale experimental configuration. Proper kinetics expressions have been developed and included in the model to replicate the absorption and desorption process in the high temperature and low temperature hydride materials. The system showed adequate hydrogen transfer between the two metal hydrides, with almost complete charging and discharging, during both thermal energy storage and thermal energy release. The system operating temperatures varied from 450°C to 500°C, with hydrogen pressures between 30 bar and 70 bar. This makes the thermal energy storage system a suitable candidate for pairing with a solar driven steam power plant. The model results, obtained for the selected experimental configuration, showed an actual thermal energy storage system volumetric energy density of about 132 kWh/m3, which is more than 5 times the U.S. Department of Energy SunShot target (25 kWh/m3).},
doi = {10.1016/j.ijhydene.2017.04.231},
journal = {International Journal of Hydrogen Energy},
number = 35,
volume = 42,
place = {United States},
year = {Thu Aug 31 00:00:00 EDT 2017},
month = {Thu Aug 31 00:00:00 EDT 2017}
}

Journal Article:

Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

State of the art on high temperature thermal energy storage for power generation. Part 1—Concepts, materials and modellization
journal, January 2010

  • Gil, Antoni; Medrano, Marc; Martorell, Ingrid
  • Renewable and Sustainable Energy Reviews, Vol. 14, Issue 1, p. 31-55
  • DOI: 10.1016/j.rser.2009.07.035

Technical Challenges and Opportunities for Concentrating Solar Power With Thermal Energy Storage
journal, May 2013

  • Stekli, Joseph; Irwin, Levi; Pitchumani, Ranga
  • Journal of Thermal Science and Engineering Applications, Vol. 5, Issue 2
  • DOI: 10.1115/1.4024143

Analysis of CSP plants for the definition of energy policies: The influence on electricity cost of solar multiples, capacity factors and energy storage
journal, October 2010


Grid flexibility and storage required to achieve very high penetration of variable renewable electricity
journal, March 2011


Optimal offering strategy for a concentrating solar power plant
journal, October 2012


Screening analysis of metal hydride based thermal energy storage systems for concentrating solar power plants
journal, October 2014

  • Corgnale, Claudio; Hardy, Bruce; Motyka, Theodore
  • Renewable and Sustainable Energy Reviews, Vol. 38
  • DOI: 10.1016/j.rser.2014.07.049

Metal hydride based thermal energy storage system requirements for high performance concentrating solar power plants
journal, November 2016


High performance metal hydride based thermal energy storage systems for concentrating solar power applications
journal, October 2015


Active MgH2Mg Systems for Reversible Chemical Energy Storage
journal, March 1990

  • Bogdanović, Borislav; Ritter, Alfred; Spliethoff, Bernd
  • Angewandte Chemie International Edition in English, Vol. 29, Issue 3
  • DOI: 10.1002/anie.199002233

A process steam generator based on the high temperature magnesium hydride/magnesium heat storage system
journal, October 1995


The development, testing and optimization of energy storage materials based on the MgH2Mg system
journal, July 1993


The application of Mg-based metal-hydrides as heat energy storage systems
journal, May 2000


Technical challenges and future direction for high-efficiency metal hydride thermal energy storage systems
journal, March 2016

  • Ward, Patrick A.; Corgnale, Claudio; Teprovich, Joseph A.
  • Applied Physics A, Vol. 122, Issue 4
  • DOI: 10.1007/s00339-016-9909-x

Metal hydrides for concentrating solar thermal power energy storage
journal, March 2016


Structural analysis of metal hydride-based hybrid hydrogen storage systems
journal, October 2012

  • Corgnale, Claudio; Hardy, Bruce J.; Anton, Donald L.
  • International Journal of Hydrogen Energy, Vol. 37, Issue 19
  • DOI: 10.1016/j.ijhydene.2012.06.040

Metal hydride bed system model for renewable source driven Regenerative Fuel Cell
journal, December 2013


Study on a metal hydride tank to support energy storage for renewable energy
journal, December 2013


Cycling and engineering properties of highly compacted sodium alanate pellets
journal, October 2012


Controlled degradation of highly compacted sodium alanate pellets
journal, March 2013


Acceptability envelope for metal hydride-based hydrogen storage systems
journal, February 2012

  • Corgnale, Claudio; Hardy, Bruce J.; Tamburello, David A.
  • International Journal of Hydrogen Energy, Vol. 37, Issue 3
  • DOI: 10.1016/j.ijhydene.2011.07.037

Hierarchical methodology for modeling hydrogen storage systems. Part I: Scoping models
journal, March 2009


Hierarchical methodology for modeling hydrogen storage systems. Part II: Detailed models
journal, April 2009


Works referencing / citing this record:

Extremely Pure Mg2FeH6 as a Negative Electrode for Lithium Batteries
journal, July 2018

  • Brutti, Sergio; Farina, Luca; Trequattrini, Francesco
  • Energies, Vol. 11, Issue 8
  • DOI: 10.3390/en11081952

An experimental high temperature thermal battery coupled to a low temperature metal hydride for solar thermal energy storage
journal, January 2020

  • Poupin, Lucas; Humphries, Terry D.; Paskevicius, Mark
  • Sustainable Energy & Fuels, Vol. 4, Issue 1
  • DOI: 10.1039/c9se00538b