期刊
ENERGY TECHNOLOGY
卷 6, 期 8, 页码 1567-1587出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.201800152
关键词
elastocaloric materials; ferroic cooling; nickel titanium; shape-memory alloys; refrigeration
资金
- German Research Foundation DFG (Deutsche Forschungsgemeinschaft) through Priority Program SPP1599 Caloric effects in ferroic materials: New concepts for cooling [EG101/23-1, SCHU2217/2-1, SE704/2-1, EG101/29-2, SCH2217/3-2, SE704/2-2]
Solid-state cooling is an environmentally friendly, no global warming potential alternative to vapor compression-based systems. Elastocaloric cooling based on NiTi shape memory alloys exhibits excellent cooling capabilities. Due to the high specific latent heats activated by mechanical loading/unloading, large temperature changes can be generated in the material. The small required work input enables a high coefficient of performance. An overview of elastocaloric cooling from basic principles, such as elastocaloric cooling cycles, material characterization, modeling, and optimization, to the design of elastocaloric cooling devices is presented. Current work performed within the DFG (Deutsche Forschungsgemeinschaft) Priority Program SPP1599 Ferroic Cooling, which is focused on the development and realization of a continuously operating elastocaloric cooling device, is highlighted. The cooling device operates in a rotatory mode with wires under tensile loading. The design allows maximization of cooling power by suitable wire diameter scaling as well as efficiency optimization by implementing a novel drive concept. Finally, computer-aided design (CAD) models of the discussed solid-state air cooling device are presented.
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