# SURVEYING DIFFERENT MAGNETOCALORIC MATERIALS USING AN ACTIVE MAGNETIC REGENERATIVE REFRIGERATOR (AMRR) FOR HYDROGEN LIQUEFACTION

https://mdr.nims.go.jp/datasets/a95e5d3e-a5c9-4522-b314-f232ddd78ca7

## File

- [Revised Conference Paper_Thermag_Mohamed Gado.pdf](https://mdr.nims.go.jp/filesets/c58342d5-113a-41c6-8695-59a4a3877cb1/download) ([Detail](https://mdr.nims.go.jp/filesets/c58342d5-113a-41c6-8695-59a4a3877cb1.md))

## Id

a95e5d3e-a5c9-4522-b314-f232ddd78ca7

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## Visibility

open_to_public

## State

published

## Created at

2026-06-18T04:20:53.844031Z

## Updated at

2026-06-23T07:20:48.967934Z

## Published at

2026-06-23T09:28:45.907206Z

## Doi

https://doi.org/10.48505/nims.6360

## First published url



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## Resource type

conference_presentation

## Manuscript type

na

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## Title

- title: SURVEYING DIFFERENT MAGNETOCALORIC MATERIALS USING AN ACTIVE MAGNETIC REGENERATIVE
    REFRIGERATOR (AMRR) FOR HYDROGEN LIQUEFACTION
  title_type: original
  lang: en

## Description

- description: 'Hydrogen serves as a key clean energy carrier for decarbonization.
    Liquefied hydrogen offers high volumetric energy density for efficient storage
    and transport. However, its low liquefaction temperature of 20 K makes the process
    energy-intensive. This study investigates magnetic refrigeration as a potential
    method to enhance hydrogen liquefaction efficiency. Utilizing the magnetocaloric
    effect (MCE), magnetic refrigeration enables an efficient cooling cycle, which
    reduces energy consumption in the liquefaction process. Herein, granular HoAl2
    particles have been proposed, given their significant specific heat and strong
    MCE. To boost the temperature span, an Active Magnetic Regenerative Refrigerator
    (AMRR) is deployed. In the present study, different magnetocaloric materials have
    been utilized to examine the hydrogen liquefaction efficiency in comparison to
    HoAl2. The cooling power and coefficient of performance are systematically evaluated
    using heat transfer, fluid flow, and magnetic field cycling of the numerical AMRR
    model. Accordingly, the hydrogen liquefaction efficiency (η_II) and hydrogen yield
    are evaluated, under an applied magnetic field of 5 T to quantify their impact
    on system-level performance. The results show a potential second-law efficiency
    (η_II) over 60% and cooling capacity over 100 W using HoAl2 under an operating
    range of 20-30 K. On the other hand, ErAl2 can achieve a η_II over 40% and cooling
    capacity over 40 W under the operating range of 10-20 K. Taking advantage of those
    materials will eventually upgrade hydrogen utilization and push boundaries toward
    achieving a hydrogen society.   '
  description_type: abstract
  lang: eng

## Creator

- name: GADO Mohamed Gaber Abdelsaid
  role: author
  orcid: https://orcid.org/0000-0002-5293-5532
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Magnetic Refrigeration System Group
- name: SHIRAI Tsuyoshi
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Magnetic Refrigeration System Group
- name: NATSUME Kyohei
  role: author
  orcid: https://orcid.org/0000-0003-3949-6923
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Magnetic Refrigeration System Group
- name: UCHIDA Akira
  role: author
  orcid: https://orcid.org/0000-0002-9193-054X
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Magnetic Refrigeration System Group
- name: Takenori Numazawa
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Magnetic Refrigeration System Group
- name: KAMIYA Koji
  role: author
  orcid: https://orcid.org/0000-0002-6765-4485
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)

## Contact agent



## Publisher

organization: National Institute for Materials Science
ror: https://ror.org/

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## Keyword

- subject: Magnetic refrigeration
  schema: not_defined
- subject: Hydrogen liquefaction
  schema: not_defined
- subject: strong MCE
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

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## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: THERMAG XI 2026 | 11th IIR International Conference on Caloric Cooling and Energy
  Harvesting
start_date: 2026-06-07
end_date: 2026-06-11
identifier: https://www.thermagxi2026.si/

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## Fileset

- id: c58342d5-113a-41c6-8695-59a4a3877cb1
  filename: Revised Conference Paper_Thermag_Mohamed Gado.pdf
  content_type: application/pdf
  size: 1053335
  md5: 8a6e938f10f60d57684095c90b2a3e99

## Thumbnail

fileset_id: c58342d5-113a-41c6-8695-59a4a3877cb1
filename: Revised Conference Paper_Thermag_Mohamed Gado.pdf