Termo-magnetna analiza in zasnova magnetne strukture z magnetokaloričnim regeneratorjem

Klinar, Katja (author), Poredoš, Alojz (co-mentor), Kitanovski, Andrej (mentor)

Magistrsko delo obsega zasnovo in analizo osnovnih gradnikov magnetokalorične hladilne naprave: aktivnega magnetokaloričnega regeneratorja in izvora magnetnega polja. V ta namen je bil zasnovan in numerično analiziran aktivni magnetokalorični regenerator, rezultati analize pa so služili kot podlaga za zasnovo strukture elektromagneta. Z numerično simulacijo smo analizirali delovanje elektromagneta in s tem povezane elektromagnetne izgube. Rezultati kažejo, da so glavne izgube posledica uporovnega segrevanja navitja. Te posledično vplivajo na hladilno moč aktivnega magnetokaloričnega regeneratorja. Delo na podlagi večparametrične analize podaja smernice za izbiro najoptimalnejše strukture elektromagneta in aktivnega magnetokaloričnega regeneratorja. Smernice bodo služile za implementacijo rezultatov v realni napravi.

• Language: Slovenian
• Keywords: magnetokalorični, aktivni magnetni regenerator, elektromagnet, prenos toplote, hlajenje, energijska učinkovitost
• Work type: Master's thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-92942
• Publication date in RUL: 11.07.2017

Secondary language

• Language: English
• Title: Thermo-magnetic analysis and design of a magnet assembly with the magnetocaloric regenerator

Abstract

This thesis presents the design and analysis of the two main parts of the magnetocaloric refrigeration device: an active magnetocaloric regenerator and a magnetic field source, respectively. For the purpose of the analysis the active magnetocaloric regenerator was designed and numerically evaluated. The results were later used as the basis for design of the magnet assembly. Numerical simulation was performed in order to analyse the performance of the electromagnet and related electromagnetic losses. Results reveal that the main loss occurs due to the resistance heating of the coils. These losses affect the cooling power of the active magnetocaloric regenerator. The results of the multi-parametric analysis provide important guidelines for the selection of the optimal structure of the electromagnet and the active magnetocaloric regenerator. These will serve for implementation of the results in the real prototype device.

• Keywords: magnetocaloric, active magnetocaloric regenerator, electromagnet, heat transfer, refrigeration, energy efficiency