20.500.12556/RUL-126396 Electrocaloric cooling the importance of electric-energy recovery and heat regeneration Here we explore the effect of electric-energy recovery and heat regeneration on the energy efficiency of an electrocaloric-cooling system. Furthermore, the influence of the polarizationelectric field hysteresis on the energy efficiency of the system is analysed. For the purposes of the analysis, the properties of (1 % x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-100xPT) with x = 0, x = 0.1, and x = 0.35 are characterized. We show that if no heat is regenerated, even small irreversibilities in the electric circuit used to recover the electric energy can cause a significant drop in the achievable energy efficiency. On the other hand, when a heat regeneration process is considered and a realistic value for the degree of electric-energy recovery equal to 80% is assumed, the limit for the energy efficiency of a system employing PMN ceramics is estimated to be equal to 81% of the efficiency of a Carnot heat pump. heat regeneration electrocaloric cooling electric-energy recovery energy analysis elektrokalorično hlajenje regeneracija toplote regeneracija električne energije energijska analiza true false true Angleški jezik Slovenski jezik Članek v reviji 2021-04-20 22:26:27 2021-04-20 22:26:32 2022-09-05 03:55:04 0000-00-00 00:00:00 2015 0 0 Str. 57009-1-57009-6 no. 5, art. 57009 Vol. 111 2015 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 2015-07-16 2015-09-03 2015-09-28 2016-09-28 621.5:620.9(045) 0295-5075 10.1209/0295-5075/111/57009 14221083 RAZ_Plaznik_Uros_2015.pdf RAZ_Plaznik_Uros_2015.pdf 1 2A4B37C54BF18BD67FEC4FD3B5420EC7 34fed8407cc1b188617ce45eb7cbe64168fc0e2461f9d9eb39d73992a754d8a1 8370f41a-a219-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142341 https://iopscience.iop.org/article/10.1209/0295-5075/111/57009 0 96559e60-a219-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142342 Fakulteta za strojništvo 0 0 0