Active magnetic regenerative processes and systems employing hydrogen as heat transfer fluid and process gas

A system comprising:

• an active magnetic regenerative refrigerator apparatus that comprises (i) a high magnetic field section in which a heat transfer fluid comprising a hydrogen fluid can flow from a cold side to a hot side through at least one magnetized bed of at least one magnetic refrigerant, (ii) a first no heat transfer fluid flow section in which a bed can be demagnetized, (iii) a low magnetic field or demagnetized section in which the heat transfer fluid can flow from a hot side to a cold side through a demagnetized bed, and (iv) a second no heat transfer fluid flow section in which a bed can be magnetized;
• a first conduit fluidly coupled between the cold side of the low magnetic field or demagnetized section and the cold side of the high magnetic field section;
• and
• a second conduit fluidly coupled to the first conduit, an expander and at least one liquefied hydrogen storage module, wherein the second conduit is configured for supplying a portion the heat transfer fluid comprised of a liquefied hydrogen from the active magnetic regenerative refrigerator apparatus to the liquefied hydrogen storage module.