Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Hydrogen Gas Compression for Efficient Storage: Balancing Energy and Density

Version 1 : Received: 20 February 2024 / Approved: 21 February 2024 / Online: 21 February 2024 (10:53:48 CET)
Version 2 : Received: 24 April 2024 / Approved: 25 April 2024 / Online: 25 April 2024 (10:39:10 CEST)

How to cite: Franco, A.; Giovannini, C. Hydrogen Gas Compression for Efficient Storage: Balancing Energy and Density. Preprints 2024, 2024021220. https://doi.org/10.20944/preprints202402.1220.v1 Franco, A.; Giovannini, C. Hydrogen Gas Compression for Efficient Storage: Balancing Energy and Density. Preprints 2024, 2024021220. https://doi.org/10.20944/preprints202402.1220.v1

Abstract

The article delves into the crucial realm of compressing hydrogen in its gaseous state, a pivotal process for enhancing its viability in both civil and industrial sectors. The study initiates by providing a concise overview and comparison of diverse hydrogen storage methodologies, laying the groundwork with an in-depth analysis of hydrogen's thermophysical properties. It scrutinizes plausible configurations for hydrogen compression, aiming to strike a delicate balance between energy consumption, predominantly derived from the fuel itself, and the requisite number of compression stages. Notably, to render hydrogen storage competitive in terms of volume, pressures of at least 350 bar are deemed essential, albeit at an energy cost amounting to approximately 10% of the fuel's calorific value. Multi-stage compression emerges as a crucial strategy, not solely for energy efficiency, but also to curtail temperature rise, with an upper limit set at 200°C. This nuanced approach is underlined by the exploration of compression levels commonly cited in the literature, particularly 350 bar and 700 bar. Ultimately, the study advocates for a three-stage compression system as a pragmatic compromise, capable of achieving high-pressure solutions while keeping compression work below 10 MJ/kg, a threshold indicative of sustainable energy utilization.

Keywords

Hydrogen storage; Gaseous Compression; Multi-Stage Configuration; Energy analysis; Efficiency

Subject

Engineering, Energy and Fuel Technology

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