Metal Hydrides for High-Temperature Power Generation
Abstract
Metal hydrides can be utilized for hydrogen storage and for thermal energy storage (TES) applications. By using TES with solar technologies, heat can be stored from sun energy to be used later which enables continuous power generation. We are developing a TES technology based on a dual-bed metal hydride system, which has a high-temperature (HT) metal hydride operating reversibly at 600-800°C to generate heat as well as a low-temperature (LT) hydride near room temperature that is used for hydrogen storage during sun hours until there is a need to produce electricity, such as during night time, a cloudy day, or during peak hours. We proceeded from selecting a high-energy density, low-cost HT-hydride based on performance characterization on gram size samples, to scale-up to kilogram quantities and design, fabrication and testing of a 1.5kWh, 200kWh/m3 bench-scale TES prototype based on a HT-bed of titanium hydride and a hydrogen gas storage instead of a LT-hydride. COMSOL Multiphysics was used to make performance predictions for cylindrical hydride beds with varying diameters and thermal conductivities. Based on experimental and modeling results, a bench-scale prototype was designed and fabricated and we successfully showed feasibility to meet or exceed all performance targets.
- Authors:
-
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Univ. of Utah, Salt Lake City, UT (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1213005
- Report Number(s):
- PNNL-SA-110630
Journal ID: ISSN 1996-1073; CJ0100000
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Energies
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 8; Journal ID: ISSN 1996-1073
- Publisher:
- MDPI AG
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; 08 HYDROGEN; 14 SOLAR ENERGY; 36 MATERIALS SCIENCE; thermal energy storage; hydrogen storage; metal hydrides; solar technologies
Citation Formats
Ronnebro, Ewa, Whyatt, Greg A., Powell, Michael R., Westman, Matthew P., Zheng, Feng, and Fang, Zhigang Zak. Metal Hydrides for High-Temperature Power Generation. United States: N. p., 2015.
Web. doi:10.3390/en8088406.
Ronnebro, Ewa, Whyatt, Greg A., Powell, Michael R., Westman, Matthew P., Zheng, Feng, & Fang, Zhigang Zak. Metal Hydrides for High-Temperature Power Generation. United States. https://doi.org/10.3390/en8088406
Ronnebro, Ewa, Whyatt, Greg A., Powell, Michael R., Westman, Matthew P., Zheng, Feng, and Fang, Zhigang Zak. Mon .
"Metal Hydrides for High-Temperature Power Generation". United States. https://doi.org/10.3390/en8088406. https://www.osti.gov/servlets/purl/1213005.
@article{osti_1213005,
title = {Metal Hydrides for High-Temperature Power Generation},
author = {Ronnebro, Ewa and Whyatt, Greg A. and Powell, Michael R. and Westman, Matthew P. and Zheng, Feng and Fang, Zhigang Zak},
abstractNote = {Metal hydrides can be utilized for hydrogen storage and for thermal energy storage (TES) applications. By using TES with solar technologies, heat can be stored from sun energy to be used later which enables continuous power generation. We are developing a TES technology based on a dual-bed metal hydride system, which has a high-temperature (HT) metal hydride operating reversibly at 600-800°C to generate heat as well as a low-temperature (LT) hydride near room temperature that is used for hydrogen storage during sun hours until there is a need to produce electricity, such as during night time, a cloudy day, or during peak hours. We proceeded from selecting a high-energy density, low-cost HT-hydride based on performance characterization on gram size samples, to scale-up to kilogram quantities and design, fabrication and testing of a 1.5kWh, 200kWh/m3 bench-scale TES prototype based on a HT-bed of titanium hydride and a hydrogen gas storage instead of a LT-hydride. COMSOL Multiphysics was used to make performance predictions for cylindrical hydride beds with varying diameters and thermal conductivities. Based on experimental and modeling results, a bench-scale prototype was designed and fabricated and we successfully showed feasibility to meet or exceed all performance targets.},
doi = {10.3390/en8088406},
journal = {Energies},
number = 8,
volume = 8,
place = {United States},
year = {Mon Aug 10 00:00:00 EDT 2015},
month = {Mon Aug 10 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
The renaissance of hydrides as energy materials
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A hydride composite featuring mutual destabilisation and reversible boron exchange: Ca(BH 4 ) 2 –Mg 2 NiH 4
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