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Modeling of an Elastocaloric Cooling System for Determining Efficiency

Bachmann, Nora 1; Schwarz, Daniel; Bach, David; Schäfer-Welsen, Olaf; Koch, Thomas 1; Bartholomé, Kilian
1 Institut für Kolbenmaschinen (IFKM), Karlsruher Institut für Technologie (KIT)


When it comes to covering the growing demand for cooling power worldwide, elastocalorics offer an environmentally friendly alternative to compressor-based cooling technology. The absence of harmful and flammable coolants makes elastocalorics suitable for energy applications such as battery cooling. Initial prototypes of elastocaloric systems, which transport heat by means of thermal conduction or convection, have already been developed. A particularly promising solution is the active elastocaloric heat pipe (AEH), which works with latent heat transfer by the evaporation and condensation of a fluid. This enables a fast and efficient heat transfer in a compression-based elastocaloric cooling system. In this publication, we present a simulation model of the AEH based on MATLAB-Simulink. The model showed very good agreement with the experimental data pertaining to the maximum temperature span and maximum cooling power. Hereby, non-measurable variables such as efficiency and heat fluxes in the cooling system are accessible, which allows the analysis of individual losses including the dissipation effects of the material, non-ideal isolation, losses in heat transfer from the elastocaloric material to the fluid, and other parasitic heat flux losses. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000150249
Veröffentlicht am 31.08.2022
DOI: 10.3390/en15145089
Zitationen: 10
Web of Science
Zitationen: 8
Zitationen: 12
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kolbenmaschinen (IFKM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 07.2022
Sprache Englisch
Identifikator ISSN: 1996-1073
KITopen-ID: 1000150249
Erschienen in Energies
Verlag MDPI
Band 15
Heft 14
Seiten Art.-Nr.: 5089
Vorab online veröffentlicht am 12.07.2022
Schlagwörter elastocaloric cooling; simulation; efficiency; analytic model; latent heat transfer; shape memory alloy
Nachgewiesen in Web of Science
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