Role of large-scale underground hydrogen storage and its pathways to achieve net-zero in China

Chen, Yongqiang; Jin, Xing; Zeng, Lingping; Zhong, Zhiqi; Mehana, Mohamed; Xiao, Wenlian; Pu, Wanfen; Regenauer‐Lieb, Klaus; Xie, Quan

doi:10.1016/j.est.2023.108448

Cited by 25 publications

(2 citation statements)

References 64 publications

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“…Zhao et al [46] indicate that the type of cushion gas plays a significant role in storage costs when considering hydrogen storage in saline aquifers. Chen et al [33] examined many factors affecting the efficiency of UHS and concluded that cushion gas is one of the main economic factors that should be considered in UHS. Lin et al [59] stated that the cushion gas could be included in working capital, assuming the possibility of selling it at the end of the storage life.…”

Section: State Of the Artmentioning

confidence: 99%

“…Several review articles have recently considered the issue of UHS. Aftab et al [26] and Chen et al [33] presented an analysis of the crucial aspects of underground hydrogen storage on an industrial scale. Raza et al [34], Tarkowski and Uliasz-Misiak [35], Thiyagarajan et al [36], Jafari Raad et al [37], and Ma et al [38] reviewed the challenges facing the implementation of this technology.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen Storage in Deep Saline Aquifers: Non-Recoverable Cushion Gas after Storage

Luboń,

Tarkowski

2024

Energies

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Underground hydrogen storage facilities require cushion gas to operate, which is an expensive one-time investment. Only some of this gas is recoverable after the end of UHS operation. A significant percentage of the hydrogen will remain in underground storage as non-recoverable cushion gas. Efforts must be made to reduce it. This article presents the results of modeling the cushion gas withdrawal after the end of cyclical storage operation. It was found that the amount of non-recoverable cushion gas is fundamentally influenced by the duration of the initial hydrogen filling period, the hydrogen flow rate, and the timing of the upconing occurrence. Upconing is one of the main technical barriers to hydrogen storage in deep saline aquifers. The ratio of non-recoverable cushion gas to cushion gas (NRCG/CG) decreases with an increasing amount of cushion gas. The highest ratio, 0.63, was obtained in the shortest 2-year initial filling period. The lowest ratio, 0.35, was obtained when utilizing the longest initial filling period of 4 years and employing the largest amount of cushion gas. The presented cases of cushion gas recovery can help investors decide which storage option is the most advantageous based on the criteria that are important to them.

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Section: State Of the Artmentioning

confidence: 99%