TY - JOUR
T1 - Experimental study on packed-bed thermal energy storage using recycled ceramic as filler materials
AU - Al-Azawii, Mohammad M.S.
AU - Alhamdi, Sabah F.H.
AU - Braun, Sasha
AU - Hoffmann, Jean Francois
AU - Calvet, Nicolas
AU - Anderson, Ryan
N1 - Funding Information:
This work was supported by Alumina Energy LLC. The authors would like to thank Seramic Materials Ltd. for kindly providing ReThink Seramic – Flora.
Funding Information:
This work was supported by Alumina Energy LLC . The authors would like to thank Seramic Materials Ltd. for kindly providing ReThink Seramic – Flora.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/12/1
Y1 - 2021/12/1
N2 - Thermal energy storage (TES) is used in renewable energy systems such as concentrated solar power (CSP) or electric thermal energy storage (ETES) plants to provide heat for dispatchable power production. This paper presents the experimental results of a new 100% recycled ceramic material, ReThink Seramic - Flora, for used in sensible heat packed-bed thermal energy storage. Results are compared to conventional α-alumina (alumina) materials. The study focuses on a full charge-discharge cycle and multiple repeated partial charge-discharge cycles. Air was used as the heat transfer fluid (HTF) with an inlet temperature of 150 °C. Three flow rates were considered in the study, 0.0034 m3/s, 0.0048 m3/s, and 0.0061 m3/s (5–9 SCFM). The thermal performance of ReThink Seramic - Flora was analyzed and compared to alumina in terms of energy stored/recovered, temperature distribution, thermal exergy efficiency, pressure drop, and net exergy efficiency (combined thermal and pressure drop losses). The results showed that alumina beads have higher performance in terms of thermal exergy efficiency than ReThink Seramic - Flora. The exergy efficiency increased from 46.8% to 55.4% for alumina and from 44.6% to 51.6% during full charge/discharge process at three flow rates. Pressure drop results indicate exergy losses over the flow rates from 3.6% to 7.9% for alumina and 2.5% to 5.1% for ReThink Seramic - Flora. This results in net exergy efficiencies at the three flow rates of 43.2%, 47.1%, and 47.5% for alumina compared to 42.1%, 45.4%, and 46.5% for ReThink Seramic - Flora.
AB - Thermal energy storage (TES) is used in renewable energy systems such as concentrated solar power (CSP) or electric thermal energy storage (ETES) plants to provide heat for dispatchable power production. This paper presents the experimental results of a new 100% recycled ceramic material, ReThink Seramic - Flora, for used in sensible heat packed-bed thermal energy storage. Results are compared to conventional α-alumina (alumina) materials. The study focuses on a full charge-discharge cycle and multiple repeated partial charge-discharge cycles. Air was used as the heat transfer fluid (HTF) with an inlet temperature of 150 °C. Three flow rates were considered in the study, 0.0034 m3/s, 0.0048 m3/s, and 0.0061 m3/s (5–9 SCFM). The thermal performance of ReThink Seramic - Flora was analyzed and compared to alumina in terms of energy stored/recovered, temperature distribution, thermal exergy efficiency, pressure drop, and net exergy efficiency (combined thermal and pressure drop losses). The results showed that alumina beads have higher performance in terms of thermal exergy efficiency than ReThink Seramic - Flora. The exergy efficiency increased from 46.8% to 55.4% for alumina and from 44.6% to 51.6% during full charge/discharge process at three flow rates. Pressure drop results indicate exergy losses over the flow rates from 3.6% to 7.9% for alumina and 2.5% to 5.1% for ReThink Seramic - Flora. This results in net exergy efficiencies at the three flow rates of 43.2%, 47.1%, and 47.5% for alumina compared to 42.1%, 45.4%, and 46.5% for ReThink Seramic - Flora.
KW - Packed-bed thermal energy storage
KW - Pressure drop
KW - Thermal cycles
KW - Thermal exergy
UR - http://www.scopus.com/inward/record.url?scp=85122622511&partnerID=8YFLogxK
U2 - 10.1016/j.est.2021.103375
DO - 10.1016/j.est.2021.103375
M3 - Article
AN - SCOPUS:85122622511
SN - 2352-152X
VL - 44
JO - Journal of Energy Storage
JF - Journal of Energy Storage
M1 - 103375
ER -