Experimental performance evaluation of sintered Gd spheres packed beds

A. Tura, Klaus K. Nielsen, Ngo Van Nong, Nini Pryds, Paulo V. Trevizoli, T. V. Christiaanse, R. Teyber, A. Rowe

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Research in magnetic refrigeration heavily relies on the use of packed spheres in regenerators, however little investigation to verify that such non-monolithic arrangements guarantee a sufficiently constrained structure has yet been performed. This work presents a preliminary comparison of the performance of AMRs consisting of Gd spheres with diameters ranging from 450-550 microns partially sintered by Spark Plasma Sintering (SPS) to similar spheres, sorted in the same size range and from the same batch, but merely packed. Pressure drop is compared at uniform temperature and at a range of heat rejection temperatures and temperature spans. Performance is compared in terms of temperature span at a range of heat rejection temperatures (295-308 K) and 0 and 10 W cooling loads. Results show a moderate increase of pressure drop with the sintered spheres, while temperature spans were consistently 2.5-5 K smaller. These results are coherent with previously presented results [1].
Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VII). Proceedings: Turin, Italy, September 11-14, 2016.
Volume126960
PublisherInternational Institute of Refrigeration
Publication date2016
Pages240-243
ISBN (Electronic)9782362150166
DOIs
Publication statusPublished - 2016
Event7th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VII) - Turin, Italy
Duration: 11 Sep 201614 Sep 2016
http://www.thermag2016.com/

Conference

Conference7th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VII)
CountryItaly
CityTurin
Period11/09/201614/09/2016
Internet address
SeriesScience et Technique du Froid, Comptes Rendus
ISSN0151-1637

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