The electrocaloric effect (ECE), i.e., the conversion of the electric into the thermal energy has recently become of great importance for development of a new generation of cooling technologies. Here, we explore utilization of [Pb(Mg1/3Nb2/3)O3]0.9[PbTiO3]0.1 (PMN-10PT) relaxor ceramics as active elements of the heat regenerator in an ECE cooling device. We show that the PMN-10PT relaxor ceramic exhibits a relatively large electrocaloric change of temperature TEC )1 K at room temperature. The experimental testing of the cooling device demonstrates the efficient regeneration and establishment of the temperature span between the hot and the cold sides of the regenerator, exceeding several times the TEC within a single PMN-10PT ceramic plate.
COBISS.SI-ID: 13878299
In this article we analize the cascade electrocaloric cooling device together with the basic experiments showing the parameters of the heat transfer. It is shown for the first time that besides the regenerative technique also cascade electrocaloric cooling device is possible.
COBISS.SI-ID: 29824039
In this article we show experimentally the existence of the electrocaloric and magnetocaloric effect in relaxor PFN-PMW.
COBISS.SI-ID: 29513767
V the article we show theoretically and experimentally several cases of feroelectrics and relaxor ferroelectrics with large electrocaloric response.
COBISS.SI-ID: 29494311
In this article we show that it is possible to find large electrocaloric response also in lead-free materials at relatively low electric fields.
COBISS.SI-ID: 28394023