Electrical performances of pyroelectric bimetallic strip heat engines describing a Stirling cycle

[摘要] This paper deals with the analytical modeling of pyroelectric bimetallic strip heat engines. These devices are designed to exploit the snap-through of a thermo-mechanically bistable membrane to transform a part of the heat flowing through the membrane into mechanical energy and to convert it into electric energy by means of a piezoelectric layer deposited on the surface of the bistable membrane. In this paper, we describe the properties of these heat engines in the case when they complete a Stirling cycle, and we evaluate the performances (available energy, Carnot efficiency...) of these harvesters at the macro- and micro-scale.

[发布机构] ST Microelectronics, Crolles; F38926, France^1;G2Elab, Univ. Grenoble Alpes, Grenoble; F38000, France^2;CNRS, Univ. Grenoble Alpes, Grenoble; F38000, France^3;LGEF, INSA Lyon, Villeurbanne; F69621, France^4;CEA-LITEN, Grenoble; F38054, France^5

[效力级别] 能源学

[关键词] Available energy;Bimetallic strips;Bistable membranes;Carnot efficiency;Electric energies;Electrical performance;Mechanical energies;Piezoelectric layers