Electrocaloric Effect

When an electric field is applied to a dielectric material, it will induce a change in the polarization and, consequently, a change in the entropy and temperature in the material. Such an electric field induced temperature and entropy change in a dielectric material is known as the electrocaloric effect. The electrocaloric effect originates from the polar entropy change between an ordered and a disordered state. A dielectric material with a large number of polarization orientations and short polar-correlation, such as the relaxor ferroelectric, has the potential to achieve a large electrocaloric effect over a broad temperature range.

Electrocaloric Materials

  • Polymers
  • Ceramics
  • Dielectric liquids
  • Composites

Advantages of Electrocaloric Refrigeration

  • More efficient than the conventional technologies
  • No gases involved
  • Low vibration and noise
  • Compact size
  • Light weight