High-performance multimode elastocaloric cooling system

• 成果类型: Article
• 署名作者: Qian, Suxin; Catalini, David; Muehlbauer, Jan; Liu, Boyang; Mevada, Het; Hou, Huilong; Hwang, Yunho; Radermacher, Reinhard; Takeuchi, Ichiro
• 署名单位: Xi'an Jiaotong University; University System of Maryland; University of Maryland College Park; University System of Maryland; University of Maryland College Park; Beihang University; Beihang University; Tianmushan Lab; University System of Maryland; University of Maryland College Park; Technical University of Denmark
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8228
• DOI: 10.1126/science.adg7043
• 发表日期: 2023-05-19
• 页码: 722-727
• 关键词: caloric materials; fatigue; refrigeration; compression; DESIGN

摘要

Developing zero-global warming potential refrigerants has emerged as one area that helps address global climate change concerns. Various high-efficiency caloric cooling techniques meet this goal, but scaling them up to technologically meaningful performance remains challenging. We have developed an elastocaloric cooling system with a maximum cooling power of 260 watts and a maximum temperature span of 22.5 kelvin. These values are among the highest reported for any caloric cooling system. Its key feature is the compression of fatigue-resistant elastocaloric nitinol (NiTi) tubes configured in a versatile multimode heat exchange architecture, which allows the harnessing of both high delivered cooling power and large temperature spans. Our system shows that elastocaloric cooling, which only emerged 8 years ago, is a promising direction for commercializing caloric cooling.