Alternative Caloric Energy Conversions - Magnetocaloric Energy Conversion: From Theory to Applications - page 405

Fig. 10.7 Schematic presentation of the two main steps in the working cycle of an electrocaloric
cooling device with heat switches, a Thermal diode between the heat sink and the electrocaloric
element is active, b Thermal diode between the heat source and the electrocaloric element is active
[ 50 ]

Fig. 10.8 Schematic
presentation of a cooling-
bridge device

above 100 were to be applied, the exergy ef ciency of the device could exceed

66 %. This concept, however, was not experimentally validated.
An upgrade to the system presented above is a device that consists of several
layers of electrocaloric elements (multilayer capacitors, thin/thick-

lm electroca-
loric materials or bulk electrocaloric materials) and thermal diodes, as shown in
Fig. 10.8 . Such a system was proposed by Kutnjak et al. [ 20 ]. They named the
device . No performance analysis, theoretical or experimental,

has been found for this particular concept.

“ a cooling bridge ”