20.500.12556/RUL-124217 Toward a solid-state thermal diode for room-temperature magnetocaloric energy conversion Thermal control elements, i.e., thermal diodes, switches, and regulators, can control the heat flow in an analogous way in how electronic devices control electrical currents. In particular, a thermal diode allows a larger heat flux in one direction than in the other. This has aroused the interest of researchers working on the thermal management of electronics, refrigeration, and energy conversion. Solid-state thermal diodes are attractive because they are silent, reliable, lightweight, and durable. While some solid-state thermal diodes have been developed at the nano- and microscale, the leap to the macroscale has yet to be made. A macroscale thermal diode would play a crucial role in the future development of applications related to caloric refrigeration and heat pumping. Additionally, the temperature changes of caloric materials (due to the caloric effect) are ideal for testing these thermal devices. This paper aims to numerically evaluate the influence of a macroscopic solid-state thermal diode in a magnetocaloric refrigeration device under transient and quasi-steady-state conditions. Materials with different temperature-dependent properties were analyzed, and the most promising ones were selected for the operating range of a magnetocaloric device (290–296 K). The highest achieved magnetocaloric thermal rectification ratio under transient conditions was up to 295-times higher than with quasi-steady-state operation. This shows that transient operation should be considered for future progress with this technology. rektifikacija toplote toplotna dioda toplotni rektifikator toplotni kontrolni element prenos toplote magnetokaloričen hlajenje pretvorba energije thermal rectification thermal diode thermal rectifier thermal control element heat transfer magnetocaloric energy conversion refrigeration true false true Angleški jezik Angleški jezik Članek v reviji 2021-01-07 23:15:55 2021-01-07 23:15:56 2023-11-29 09:24:24 0000-00-00 00:00:00 2020 0 0 Str. 234101-1-234101-10 no. 23 Vol. 127 2020 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 53 0021-8979 10.1063/5.0006120 19703299 4730378 RAZ_Klinar_Katja_2020.pdf RAZ_Klinar_Katja_2020.pdf 1 81DA0CC69A4CC5D45ECF9F9B04B765ED 4b387279b48f8382170f5ec8ed99899545f30e1d6d0df4cb398327055eeafc56 821f3209-a1bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=139627 Fakulteta za strojništvo 0 0 0