TY - JOUR
T1 - Performance analysis of a thermal energy storage system based on paired metal hydrides for concentrating solar power plants
AU - Mellouli, Sofiene
AU - Askri, Faouzi
AU - Edacherian, Abhilash
AU - Alqahtani, Talal
AU - Algarni, Salem
AU - Abdelmajid, Jemni
AU - Phelan, Patrick
N1 - Funding Information:
The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through General Research Project under grant number (G.R.P- 226-38).
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/11/5
Y1 - 2018/11/5
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 system and a novel design of an MH-TES system is proposed for CSP plants. A 2D mathematical model is developed to study heat and mass transfer inside this system in which a heat storage medium of high-temperature MH bed (Mg2FeH6) is coupled with a low-temperature MH bed (Na3AlH6). To simulate this model a numerical code in Fortran-90 is made. The main objective of this work is (i) to demonstrate the technical feasibility of the novel MH-TES system through the simulation of operating cycles, and (ii) to discuss the performance assessment of the proposed system. 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.
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 system and a novel design of an MH-TES system is proposed for CSP plants. A 2D mathematical model is developed to study heat and mass transfer inside this system in which a heat storage medium of high-temperature MH bed (Mg2FeH6) is coupled with a low-temperature MH bed (Na3AlH6). To simulate this model a numerical code in Fortran-90 is made. The main objective of this work is (i) to demonstrate the technical feasibility of the novel MH-TES system through the simulation of operating cycles, and (ii) to discuss the performance assessment of the proposed system. 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.
KW - Concentrating solar power plants
KW - Hydrogen storage
KW - Inclined fins
KW - Paired metal hydrides
KW - Thermal energy storage system
KW - Thermochemical energy storage
UR - http://www.scopus.com/inward/record.url?scp=85052936251&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85052936251&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2018.09.014
DO - 10.1016/j.applthermaleng.2018.09.014
M3 - Article
AN - SCOPUS:85052936251
SN - 1359-4311
VL - 144
SP - 1017
EP - 1029
JO - Journal of Heat Recovery Systems
JF - Journal of Heat Recovery Systems
ER -