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Updated: Feb 8, 2026

Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation
Published on: May 2, 2016
Energy-Efficient Elastocaloric Cooling by Flexibly and Reversibly Transferring Interface in Magnetic Shape-Memory
Yang Li1, Dewei Zhao1,2, Jian Liu1,2
1CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering , Chinese Academy of Sciences , Ningbo 315201 , China.
This study explores elastocaloric cooling using a novel Ni-Fe-Ga-Co single crystal. It shows a giant elastocaloric effect and low fatigue, offering significant energy savings for air conditioning.
Area of Science:
- Materials Science
- Thermodynamics
- Solid-state Physics
Background:
- Elastocaloric cooling is a promising alternative to conventional vapor-compression cooling.
- Developing advanced materials is key to realizing efficient elastocaloric cooling systems.
Purpose of the Study:
- Investigate the elastocaloric effect in a Heusler-type Ni50.0Fe19.0Ga27.1Co3.9 single crystal.
- Evaluate its potential for energy-efficient air conditioning applications.
Main Methods:
- Multiscale characterization: in situ neutron diffraction, transmission electron microscopy, synchrotron X-ray Laue microdiffraction, infrared thermal imaging.
- Analysis of stress-induced martensitic transformation and superelastic behavior.
Main Results:
- A giant elastocaloric effect of 11 K was observed.
- The material demonstrated ultralow fatigue over 12,000 cycles.
- Numerical simulations indicated 18% energy saving and 70% cooling capacity enhancement potential compared to nitinol.
Conclusions:
- The Ni-Fe-Ga-Co single crystal is a strong candidate for energy-efficient elastocaloric cooling.
- Its unique transformation mechanism enables high performance and durability.
- This material could significantly advance air conditioner technology.
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