Temperature Change in the Piezoelectrocaloric Element under Periodic External Fields

Abstract

The paper presents the analysis of the cooling structure consisted of alternate electro- and piezocaloric layers. The temperature distribution in such a system under periodic electric and elastic fields is investigated. It is demonstrated that the simultaneous application of the external forces allows to increase the temperature difference at the outer surfaces of the system in 2–3 times compared with the operation by a single force. The obtained results can be used for design and optimization of a new generation of cooling devices.

Keywords:

• Solid-state cooler
• layered structure
• piezoelectric
• electrocaloric effect
• elastocaloric effect
• multicaloric effect

Funding

The research leading to the results exposed has received funding from the SIX project CZ.1.05/2.1.00/03.0072 and from the project CZ.1.07/2.3.00/30.0039 of Brno University of Technology. Additionally, this work was partially financially supported by Government of Russian Federation, Grant 074-U01.