Demonstration of high efficiency elastocaloric cooling with large ΔT using NiTi wires

By J. Cui, Yiming Wu, J. Muehlbauer, Y. Hwang, R. Radermacher, S. Fackler, M. Wuttig, Ichiro Takeuchi. 2012

492 citations recorded by the source corpus.

Vapor compression (VC) is by far the most dominant technology for meeting all cooling and refrigeration needs around the world. It is a mature technology with the efficiency of modern compressors approaching the theoretical limit, but its environmental footprint remains a global problem. VC refrigerants such as hydrochloroflurocarbons (HCFCs) and hydrofluorocarbons (HFCs) are a significant source of green house gas emissions, and their global warming potential (GWP) is as high as 1000 times that of CO2 [Buildings Energy Data Book (Building Technologies Program, Department of Energy, 2009)]. There is an urgent need to develop an alternative high-efficiency cooling technology that is affordable and environmentally friendly [A. D. Little, Report For Office of Building Technology State and Community Programs, Department of Energy, 2001]. Here, we demonstrate that elastocaloric cooling (EC), a type of solid-state cooling mechanism based on the latent heat of reversible martensitic transformation, can have the ...

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/d8569b63a828204e3ec0a690f237eec9ffd7ade1

Citations in the corpus

• Elastocaloric effect vs fatigue life: Exploring the durability limits of Ni-Ti plates under pre-strain conditions for elastocaloric cooling (2018, unknown): “This is insufficient for any practical application where fatigue life well above ten million cycles is required [5].”
• Thermodynamics cycle analysis and numerical modeling of thermoelastic cooling systems (2015, unknown): “(9) is to compare the theoretical prediction of COP mat for nitinol wire with the previous measured data by Cui et al. (2012) and the projected COP mat .”