TY - GEN
T1 - Performance analysis of a metal hydride-thermal energy storage system for concentrating solar power plants
AU - Alqahtani, Talal
AU - Mellouli, Sofiene
AU - Askri, Faouzi
AU - Phelan, Patrick E.
N1 - Funding Information: The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through the General Research Project under grant number (G.R.P-226-38). Publisher Copyright: © 2019 Begell House Inc. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Concentrating solar power (CSP) plants require suitable thermal energy storage (TES) systems to enable power generation during the night and cloudy days. Metal hydrides (MH) are attractive options for such TES systems, and a novel design of an MH-TES system is proposed for CSP plants. The novel design of the MH-TES system is simulated for operating cycles to demonstrate its technical feasibility. The process simulation demonstrated a consistent thermal and dynamic coupling between the paired MH beds. The performance analysis showed that the present MH-TES system can recover 96% of solar energy stored. Further, for the given operating conditions, the thermal energy storage density of this system is about 90 kWhth/m3, which is more than 3.6 times the U.S. Department of Energy SunShot target of 25 kWhth/m3. Moreover, it was found that the free volume, the half time of the cycle and the desorption average temperature of the HTMH were crucial factors for improving the performance of the metal hydride reactors.
AB - Concentrating solar power (CSP) plants require suitable thermal energy storage (TES) systems to enable power generation during the night and cloudy days. Metal hydrides (MH) are attractive options for such TES systems, and a novel design of an MH-TES system is proposed for CSP plants. The novel design of the MH-TES system is simulated for operating cycles to demonstrate its technical feasibility. The process simulation demonstrated a consistent thermal and dynamic coupling between the paired MH beds. The performance analysis showed that the present MH-TES system can recover 96% of solar energy stored. Further, for the given operating conditions, the thermal energy storage density of this system is about 90 kWhth/m3, which is more than 3.6 times the U.S. Department of Energy SunShot target of 25 kWhth/m3. Moreover, it was found that the free volume, the half time of the cycle and the desorption average temperature of the HTMH were crucial factors for improving the performance of the metal hydride reactors.
KW - Concentrating solar power plants
KW - Hydrogen storage
KW - Thermal energy storage system
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U2 - 10.1615/TFEC2019.mph027379
DO - 10.1615/TFEC2019.mph027379
M3 - Conference contribution
T3 - Proceedings of the Thermal and Fluids Engineering Summer Conference
SP - 1667
EP - 1676
BT - 4th Thermal and Fluids Engineering Conference, TFEC 2019
PB - Begell House Inc.
T2 - 4th Thermal and Fluids Engineering Conference, TFEC 2019
Y2 - 14 April 2019 through 17 April 2019
ER -