Simulation of high temperature thermal energy storage system based on coupled metal hydrides for solar driven steam power plants
| Autor: | Ragaiy Zidan, Claudio Corgnale, Bruce Hardy, Anna d'Entremont |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry Hydride 020209 energy Nuclear engineering Energy Engineering and Power Technology 02 engineering and technology Steam-electric power station 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal energy storage Renewable energy Fuel Technology Electricity generation Computer data storage 0202 electrical engineering electronic engineering information engineering 0210 nano-technology business Solar power Energy (signal processing) |
| Zdroj: | International Journal of Hydrogen Energy. 43:817-830 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.11.100 |
| Popis: | 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 TiCr1.6Mn0.2 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. In addition, simulations indicate that there is significant scope for performance improvement via heat-transfer enhancement strategies. |
| Databáze: | OpenAIRE |
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