The influence of the solid thermal conductivity on active magnetic regenerators

Publication: Research - peer-reviewJournal article – Annual report year: 2012

View graph of relations

The influence of the thermal conductivity of the regenerator solid on the
performance of a flat plate active magnetic regenerator (AMR) is investigated using an established numerical AMR model. The cooling power at different (fixed) temperature spans is used as a measure of the performance for a range of thermal conductivities, operating frequencies, a long and short regenerator, and finally a regenerator with a low and a high number of transfer units (NTU) regenerator. In this way the performance is mapped out and the impact of the thermal conductivity of the solid is probed.
Modeling shows that under certain operating conditions, the AMR cycle is sensitive
to the solid conductivity. It is found that as the operating frequency is increased it is not only sufficient to have a high NTU regenerator but the regenerator performance will also benefit from increased thermal conductivity in the solid. It is also found that a longer regenerator is generally better performing than a shorter one under the otherwise exact same conditions. This suggests that the thermal conductivity of candidate magnetocaloric materials should be considered when selecting them for use in a device.
Original languageEnglish
JournalJournal of Physics D: Applied Physics
Publication date2012
Volume45
Issue14
Pages145001
Number of pages7
ISSN0022-3727
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 9

Keywords

  • Active magnetic regenerator, Thermal conductivity, Parallel plate heat exchanger, Magnetocaloric effect, Magnetic refrigeration
Download as:
Download as PDF
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
PDF
Download as HTML
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
HTML
Download as Word
Select render style:
APAAuthorCBEHarvardMLAStandardVancouverShortLong
Word

Download statistics

No data available

ID: 7590258