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AvtorPlaznik, Uroš
Vrabelj, Marko
Kutnjak, Zdravko
Malič, Barbara
Poredoš, Alojz
Kitanovski, Andrej
Naslov Electrocaloric cooling : the importance of electric-energy recovery and heat regeneration / U. Plaznik ... [et al.]
Vrsta/vsebinatype of material članek - sestavni del
Jezikangleški
Leto2015
Fizični opisstr. 57009-1-57009-6 : Ilustr.
OpombeBibliografija: str. 5-6
Abstract
Številka članka: 57009
Predmetne oznake (nekontrolirane)heat regeneration / electrocaloric cooling / electric-energy recovery / energy analysis / elektrokalorično hlajenje / regeneracija toplote / regeneracija električne energije / energijska analiza
UDK621.5:620.9(045)
Doi/ISAN10.1209/0295-5075/111/57009
PovzetekHere 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.
COBISS.SI-ID14221083
Glej publikacijo TI=Europhysics letters : EPL ISSN: 0295-5075.- Vol. 111, nr. 5 (2015), str. 57009-1-57009-6

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