Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Gifford McMahon Refrigerating Cycle for Liquefying Small Amounts of Hydrogen: Analysis of the Performances

Version 1 : Received: 22 March 2024 / Approved: 22 March 2024 / Online: 25 March 2024 (07:56:09 CET)

How to cite: Bartoli, C. Gifford McMahon Refrigerating Cycle for Liquefying Small Amounts of Hydrogen: Analysis of the Performances. Preprints 2024, 2024031435. https://doi.org/10.20944/preprints202403.1435.v1 Bartoli, C. Gifford McMahon Refrigerating Cycle for Liquefying Small Amounts of Hydrogen: Analysis of the Performances. Preprints 2024, 2024031435. https://doi.org/10.20944/preprints202403.1435.v1

Abstract

: This study presents energy and exergy analyses conducted on a Gifford-McMahon cycle refriger-ator. Through detailed numerical simulations, the performance of the refrigerator is thoroughly assessed, with a particular focus on energy and exergy losses. The obtained results are compared with Sankey and Grassman diagrams, providing visual representations of energy and exergy flows within the system. The localization of exergy losses is carefully analysed to identify key areas for optimization aimed at enhancing efficiency and power output. By pinpointing sources of ex-ergy destruction, targeted improvements can be implemented to maximize the overall perfor-mance of the refrigerator. Overall, this research contributes to a deeper understanding of the thermodynamic behaviour of Gifford-McMahon cycle refrigerators and provides valuable insights for optimizing their performance in practical applications.

Keywords

Gifford-McMahon cycle; energy analysis; exergy analysis; cryocooler; numerical simulation; Grassmann diagram; hydrogen liquefaction

Subject

Engineering, Energy and Fuel Technology

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