Experimental Characterisation and Finite-element Simulations of a Thermoelectric Generator with Ceramic p-type Ca3Co4O9 and Metallic n-type Cu0.57Ni0.42Mn0.01 Legs
| Autor: | Armin Feldhoff, Michael Bittner, Dennis Groeneveld, Benjamin Geppert |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Finite element method Metal Thermoelectric generator visual_art 0103 physical sciences Electrochemistry visual_art.visual_art_medium Ceramic Electrical and Electronic Engineering Composite material 0210 nano-technology |
| Zdroj: | Energy Harvesting and Systems. 4:77-85 |
| ISSN: | 2329-8766 2329-8774 |
| DOI: | 10.1515/ehs-2016-0022 |
| Popis: | This study presents the characterisation of a prototype thermoelectric generator including ceramic C a 3 C o 4 O 9 ${\rm{C}}{{\rm{a}}_{\rm{3}}}{\rm{C}}{{\rm{o}}_{\rm{4}}}{{\rm{O}}_{\rm{9}}}$ p-type and metallic C u 0 . 57 N i 0 . 42 M n 0 . 01 ${\rm{C}}{{\rm{u}}_{{\rm{0}}{\rm{. 57}}}}{\rm{N}}{{\rm{i}}_{{\rm{0}}{\rm{. 42}}}}{\rm{M}}{{\rm{n}}_{{\rm{0}}{\rm{. 01}}}}$ n-type legs. The generator was constructed applying the conventional rigid chessboard design, which provides an electrical series connection of the thermoelectrically active materials in between of two electrical isolating cover plates made of alumina. Ag-epoxy resin was used for electric connectors which were directly bond to the thermoelectrically active materials. The generator was rebuild in the framework of a finite-element model to simulate the generator’s transport characteristics using the physical data of the single materials as input parameters for the simulation tool. The simulation results give a view to the distributions of temperature and electric potential as well as vector plots showing the generated current density of charge inside the regarded materials. The finite-element simulation tool was used to consider the electrical contact resistivities between the thermoelectric legs and the connector material. The input parameter for the specific isothermal electric resistivity of the Ag-epoxy connectors were varied by including the electrical contact resistances to match the simulated to the measured data in order to receive the correct electric current densities in the modeled device. |
| Databáze: | OpenAIRE |
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