Effects of cooling-recovery venting on the performance of cryo-compressed hydrogen storage for automotive applications

Runfeng Xiao, Gui Tian, Yu Hou, Shuangtao Chen, Cheng Cheng and Liang Chen

Applied Energy, 2020, vol. 269, issue C, No S0306261920306553

Abstract: Cryo-compressed vessels have many advantages in storing hydrogen for automotive applications such as the large storing density and thermal endurance. However, the cooling power of venting hydrogen in the processes of venting and discharge is wasted. In this paper, a cooling-recovery venting method with a throttling valve is proposed for the cryo-compressed hydrogen storage. A thermodynamic model is established to analyze the behavior of hydrogen in the insulated pressure vessel with a throttling valve. Different initial pressures, release pressures and filling amounts of hydrogen in the vessel are studied in the processes of parking, discharge and driving. The parking time can be extended by 55% with a throttling valve in the vessels of 2 MPa release pressure. The parking time increase by recovering the cooling capacity is large for vessels of large filling density which also have longer parking time. Simulations of hydrogen storage during the actual driving are performed at different initial pressures. The throttling valve in the low-initial-pressure vessel can reduce the upper pressure limit of the vessel by 50% which helps to reduce the manufacturing costs. Considerable thermodynamic benefits can be utilized with the cooling-recovery venting during the driving process. This work provides guidelines for the design and optimization of cryo-compressed hydrogen storage system.

Keywords: Cryo-compressed hydrogen; Throttling valve; Hydrogen storage; Dormancy (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261920306553
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:269:y:2020:i:c:s0306261920306553

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.2020.115143

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 ().