Thermodynamic and performance analysis of TEG integrated compressed hydrogen energy storage system (TEG-CHES)

Ruonan Zhang, Jingyong Cai, Zhengrong Shi, Tao Zhang and Haifei Chen

Renewable Energy, 2025, vol. 242, issue C

Abstract: Hydrogen is regarded as a viable alternative to traditional fossil fuels and a crucial element in future energy systems. The mainstream method of high-pressure gaseous hydrogen storage in industrial production consumes significant energy and results in considerable energy losses during storage. This study investigates the integration of a thermoelectric generator (TEG) with a compressed hydrogen energy storage system (CHES), proposing the novel TEG-CHES system to recover and efficiently utilize energy. The primary objective is to enhance the overall energy efficiency of hydrogen energy storage. A comprehensive mathematical model based on Aspen Plus is developed to evaluate the system's performance. The methodology focuses on analyzing key operational parameters, including hydrogen mass flow rate, compressor compression ratio, and thermal energy storage temperatures. Under optimal conditions, the system can generate 1344.5 kW of electrical energy, achieving a round-trip efficiency of 54.43 %. Compared to traditional systems such as compressed air and CO2 storage, the TEG-CHES system improves round-trip efficiency by 4.29 % and 7.02 %, respectively. The results demonstrate the potential of the TEG-CHES system to significantly enhance energy efficiency in hydrogen storage applications, offering a competitive solution for energy storage.

Keywords: Hydrogen energy storage; Round trip efficiency; Thermoelectric generation; Compressed hydrogen (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148125001648
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:242:y:2025:i:c:s0960148125001648

DOI: 10.1016/j.renene.2025.122502

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().