Electrocaloric cooling: The importance of electric-energy recovery and heat regeneration

被引：35

作者：

Plaznik, U. ^{[1
]}

Vrabelj, M. ^{[2
,3
]}

Kutnjak, Z. ^{[2
,3
]}

Malic, B. ^{[2
,3
]}

Poredos, A. ^{[1
]}

Kitanovski, A. ^{[1
]}

机构：

[1] Univ Ljubljana, Fac Mech Engn, Ljubljana 1000, Slovenia

[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[3] Jozef Stefan Int Postgrad Sch, Ljubljana 1000, Slovenia

来源：

EPL | 2015年 / 111卷 / 05期

关键词：

THIN-FILM; WORKING;

D O I：

10.1209/0295-5075/111/57009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 polarization-electric 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)O-3-xPbTiO(3) (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. Copyright (C) EPLA, 2015

引用

页数：6

共 37 条

[11] Layered ceramic structure based on the electrocaloric elements working as a solid state cooling line [J].

Karmanenko, Sergei F. ;

Pakhomov, Oleg V. ;

Prudan, Alexander M. ;

Starkov, Aleksander S. ;

Eskov, Andrei .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2007, 27 (8-9) :3109-3112

[12]

Kelly J, 1997, J AM CERAM SOC, V80, P957, DOI 10.1111/j.1151-2916.1997.tb02927.x

[13]

Kitanovski A., 2015, MAGNETOCALORIC ENERG, P456

[14] Pielectric properties of Rochelle salt crystals [J].

Kobeko, P. ;

Kurtschatov, J. .

ZEITSCHRIFT FUR PHYSIK, 1930, 66 (3-4) :192-205

[15] Formulation of an Aqueous Titania Suspension and its Patterning with Ink-Jet Printing Technology [J].

Kuscer, Danjela ;

Stavber, Gaj ;

Trefalt, Gregor ;

Kosec, Marija .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2012, 95 (02) :487-493

[16]

Kutnjak Z., 2015, ELECTROCALORIC EFFEC, P1

[17] Anisotropy of electric field frezing of the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 [J].

Kutnjak, Zdravko ;

Vodopivec, B. ;

Blinc, Robert .

PHYSICAL REVIEW B, 2008, 77 (05)

[18] Comparison of directly and indirectly measured electrocaloric effect in relaxor ferroelectric polymers [J].

Lu, S. G. ;

Rozic, B. ;

Zhang, Q. M. ;

Kutnjak, Z. ;

Pirc, R. ;

Lin, Minren ;

Li, Xinyu ;

Gorny, Lee .

APPLIED PHYSICS LETTERS, 2010, 97 (20)

[19] Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect [J].

Lu, S. G. ;

Rozic, B. ;

Zhang, Q. M. ;

Kutnjak, Z. ;

Li, Xinyu ;

Furman, E. ;

Gorny, Lee J. ;

Lin, Minren ;

Malic, B. ;

Kosec, M. ;

Blinc, R. ;

Pirc, R. .

APPLIED PHYSICS LETTERS, 2010, 97 (16)

[20] Giant electrocaloric effect in thin-film PbZr0.95Ti0.05O3 [J].

Mischenko, AS ;

Zhang, Q ;

Scott, JF ;

Whatmore, RW ;

Mathur, ND .

SCIENCE, 2006, 311 (5765) :1270-1271

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