Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Modeling of Magnetization and Demagnetization in Magnetic Regenerative Refrigeration

Published

Author(s)

F Shir, Edward Della Torre, Lawrence H. Bennett, C Mavriplis, Robert D. Shull

Abstract

A time-dependent model of magnetization and demagnetization temperature profile is developed based on thermodynamic and heat transfer laws, material properties, and variable-field magnet parameters. Test results of a magnetic refrigeration test bed operating at room temperature are compared with the model calculation. The results of the calculated temperature profile in the refrigerant bed are inserted into an iterative process for a regenerative thermal wave propagation calculation to predict the best time to start cold and hot gas flows through the refrigerant bed. The model can be used to simulate optimum operating conditions and duty cycle of a magnetic regenerative refrigeration. The effects of the thermal conductivity between the magnetocaloric material and the thermocouple on temperature measurements and thermal lag are presented.
Citation
IEEE Transactions on Magnetics

Keywords

demagnetization, magnetic regenerative refrigeration, magnetization

Citation

Shir, F. , Della Torre, E. , Bennett, L. , Mavriplis, C. and Shull, R. (2004), Modeling of Magnetization and Demagnetization in Magnetic Regenerative Refrigeration, IEEE Transactions on Magnetics (Accessed July 21, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created July 1, 2004, Updated October 12, 2021