Work

Analysis of a bimetallic micro heat engine for energy harvesting

Year: 2014

Type: article

Abstract: Micro heat engines have been proposed as an alternative to thermoelectric generators, to harvest thermal energy. Recently, we proposed a micro heat engine fabricated using a buckled bimetallic beam. In this paper, we present a finite element as well as an analytical model to predict the static behavior of such a heat engine. A lumped parameter model to predict the dynamic behavior of the engine has been discussed as well. Finally, the engine has been fabricated and tested to validate all models presented. The analytical model corroborates the finite element model accurately. In addition, a good correlation has been observed between the simulations and measurements. The engine is capable of operating at up to 10.4 Hz from a temperature difference of 44 K.

Source: Smart Materials and Structures

DOI: 10.1088/0964-1726/23/3/035011

Authors: S K T Ravindran, M Kroener, A Shabanian, F Goldschmidtboeing, P Woias

Institution: University of Freiburg

Language: English

Topic: Innovative Energy Harvesting Technologies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funder: Deutsche Forschungsgemeinschaft