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Elastocaloric cooling processes: The influence of material strain and strain rate on efficiency and temperature span
Author(s) -
Marvin Schmidt,
Andreas Schütze,
Stefan Seelecke
Publication year - 2016
Publication title -
apl materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.571
H-Index - 60
ISSN - 2166-532X
DOI - 10.1063/1.4953433
Subject(s) - materials science , carnot cycle , strain (injury) , material efficiency , strain rate , thermal , alloy , process (computing) , composite material , thermodynamics , ecology , medicine , physics , biology , computer science , operating system
This paper discusses the influence of material strain and strain rate on efficiency and temperature span of elastocaloric cooling processes. The elastocaloric material, a newly developed quaternary Ni-Ti-Cu-V alloy, is characterized at different maximum strains and strain rates. The experiments are performed with a specially designed test setup, which enables the measurement of mechanical and thermal process parameters. The material efficiency is compared to the efficiency of the Carnot process at equivalent thermal operation conditions. This method allows for a direct comparison of the investigated material with other caloric materials

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