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A Preliminary Numerical Study of Magnetic Refrigeration.

Carpetis, C. (1990) A Preliminary Numerical Study of Magnetic Refrigeration. In: Proceedings 6th Int. Cryocooler Conference (1990).. 6th Int. Cryocooler Conference, 24-26 October 1990, Plymouth, USA..

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Abstract

The basic computational model is a thermodynamic cycle simulation starting with given temperature distribution in the magnetic substance (refrigerant). Temperature changes and magnetic forces are calculated for discrete material segments at a number of time intervals over a complete operation cycle. The computation of the change in magnetic entropy is based on the molecular field theory and the calculation of the flow and heat transfer irreversibilities is based on the heat transfer properties of packed beds. In the case of an active magnetic refrigerator the temperature distribution in the refrigerant is determined through numerical solution of the differential equations which describe the heat transfer between the refrigerant and the heat transfer fluid. The simulation illustrates the cool-down procedure and the time-dependent temperature profiles in the active magnetic refrigerator until a steady cyclic state is established.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1990, note=RZOT/011, pages=16,
Title:A Preliminary Numerical Study of Magnetic Refrigeration.
Authors:
AuthorsInstitution or Email of Authors
Carpetis, C.UNSPECIFIED
Date:1990
Journal or Publication Title:Proceedings 6th Int. Cryocooler Conference (1990).
Status:Published
Keywords:Refrigeration, Regenerator, Refrigerationsverfahren, refrigerant, refrigerator
Event Title:6th Int. Cryocooler Conference, 24-26 October 1990, Plymouth, USA.
HGF - Research field:UNSPECIFIED
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Stuttgart
Institutes and Institutions:Institute of Technical Thermodynamics
Deposited By: elib DLR-Beauftragter
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 05:54

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