Numerical simulation on the storage performance of a phase change materials based metal hydride hydrogen storage tank

Yang Ye, Jianfeng Lu, Jing Ding, Weilong Wang and Jinyue Yan

Applied Energy, 2020, vol. 278, issue C, No S030626192031179X

Abstract: In metal hydride (MH) hydrogen storage tanks, the integration of phase change materials (PCM) can store and release the reaction heat to promote the reaction process without an external heat source. In order to get a high-performance MH-PCM storage tank and understand the effect of mass ratio of PCM to MH on the storage performance, this research proposes a novel MH-PCM storage unit (PCM sandwiched between two layers of MH) stacked inside a cylindrical tank. A mathematical model is established to describe the heat and mass transfer in the process of hydrogen ab/desorption and heat storage/release. It is found that the PCM sandwiched structure has a larger heat transfer area than the surrounding structure, which improves the hydrogen absorption and desorption rate. For the MH-PCM unit, the mass ratio of PCM to MH affects the hydrogen ab/desorption rate. Varying the mass ratio of PCM to MH requires adjustments in the hydrogen absorption pressure for completely absorbing the hydrogen, which also impacts the amount of sensible and latent heat stored in the PCM. The results show that in order to fully absorb the hydrogen, the hydrogen absorption pressure must increase to compensate for reduced mass ratio of PCM to MH, and the ratio of sensible heat to latent heat storage increases.

Keywords: Metal hydride; Hydrogen storage; Phase change material; Thermal storage; Heat transfer (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (14)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S030626192031179X
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:appene:v:278:y:2020:i:c:s030626192031179x

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2020.115682

Access Statistics for this article

Applied Energy is currently edited by J. Yan

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