Elastocaloric cooling device [Elektronski vir] : materials and modeling
Tušek, Jaka ...
In the last decade we have witnessed the development of alternative solid-state cooling technologies based on socalled ferroic (caloric) effects. A large effort nowadays is devoted to investigating ...solid-state refrigeration using the magnetocaloric effect (change of temperature upon application of a magnetic field). However, the possibility of inducing a thermodynamic transition by means of mechanical stress (martensitic transformation), i.e. the elastocaloric effect in superelastic materials, opens up new routes for solid-state refrigeration. In the recent years a large elastocaloric effect was demonstrated in Ni-Ti-based [1-4], Cu-based [5] as well as Fe-based [6] shape memory alloys. Although these studies showed a great potential of the elastocaloric effect, there has not yet been much activities on development of elastocaloric cooling devices. Some ideas on elastocaloric cooling device have already been presented [7], but there is still a lack of knowledge and information about its actual cooling potential. In this work, a commercial Ni48.9Ti51.1 alloy with phase transition around room temperature (295 K) is evaluated to be potentially applied in a solid-state cooling device.
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