Alternative Caloric Energy Conversions - Magnetocaloric Energy Conversion: From Theory to Applications - page 408

exchanger (heat sink) was installed, and on the other end, there was a cold heat
exchanger (heat source). The device also included a voltage generator (to create a
varying electric

uid through the regenerator). The
synchronized operation of the voltage generator and the pump ensured that after the
polarization of the electrocaloric material, the

eld) and a pump (to move the fl

owing from the heat
source to the heat sink. In contrast, after the depolarization, the

fl uid was fl

owing
from the heat sink to the heat source. The authors reported a maximum temperature
span of 5 K. The latter was achieved when the material was subjected to an electric

fl uid was fl

eld change of 6 MVm − 1 and pentane was used as the working

uid. The authors
[ 45 ] did not report on the adiabatic temperature change of the PST electrocaloric
material used in the experiment.
Over the next 15 years, the amount of research in the

fl

eld of electrocaloric
cooling was in decline. However, 6 years after the discovery of the giant electro-
caloric effect, in 2012, Jia et al. [ 53 ] presented a new, small-scale electrocaloric
cooling device. A schematic presentation of the device is shown in Fig. 10.11 .It

Fig. 10.11 Electrocaloric cooling device with a liquid-based switchable thermal interface,
a Electrocaloric material is in an ideal thermal contact with the heat sink, b Electrocaloric material
is in an ideal thermal contact with the heat source (see also Jia et al. [ 53 ])