Design and Advanced Dynamic Process Simulation with Experimental Validation for Sensible Thermal Energy-Storage Systems
Year of publication
2025
Authors
Al-Maliki Wisam Abed Kattea; Alobaid Falah; Horst Maria Gabriela; Epple Bernd
Abstract
A thermal energy storage system (TES) is investigated in this work. To charge the storage tank, hot air is passed through the fixed bed from top to bottom. In this process, the hot air transfers its thermal energy to the particles in the bed. The discharging process is carried out with cold air, which flows through the fixed bed in the opposite direction. A novel automated dynamic simulation model of the thermal energy storage system was created using the APROS simulation software. The developed model was validated with the measurements from the literature. This work is the first of its kind to operate with a heat transfer fluid (HTF) temperature of up to 1200 °C during the charging process. During discharge mode, the temperature of the HTF can be regulated using a bypass controller. The simulations were performed to investigate the behaviour of the fixed-bed storage system during charging/discharging cycles. For this purpose, 64 simulations with different parameters were carried out. In addition to the air, CO2 was used to improve the performance because its density is higher than air. The parametric study displays that cases 14 (A14 and C14) and cases 30 (A30 and C30) produce the best results for both alumina and ceramic when air is used as a heat transfer fluid for the examined parameters. According to the parametric analysis, case C14 used air as the HTF and reached a maximum thermal capacity of 3.237 MWh and utilization of 55.4%. Thereafter, the model is run using CO2 as a heat transfer fluid according to the parameters implemented in C14. A comparison between C14 (with air) and C14 (with CO2) was performed. The findings revealed a rise in thermal capacity and utilization of 4.5 % using CO2 as a heat transfer fluid compared to using air, and reduced compressor work, highlighting its advantages for enhanced efficiency.
Show moreOrganizations and authors
LUT University
Alobaid Falah
Publication type
Publication format
Article
Parent publication type
Journal
Article type
Original article
Audience
ScientificPeer-reviewed
Peer-ReviewedMINEDU's publication type classification code
A1 Journal article (refereed), original researchPublication channel information
Journal
Publisher
Article number
2401847
ISSN
Publication forum
Publication forum level
1
Open access
Open access in the publisher’s service
No
Open access of publication channel
Partially open publication channel
Self-archived
No
Other information
Fields of science
Mechanical engineering
Keywords
[object Object],[object Object],[object Object]
Internationality of the publisher
International
International co-publication
Yes
Co-publication with a company
No
DOI
10.1002/ente.202401847
The publication is included in the Ministry of Education and Culture’s Publication data collection
Yes