Giant temperature span in electrocaloric regenerator

doi:10.1126/science.abb8045

GSTDTAP > 气候变化

DOI	10.1126/science.abb8045
	Giant temperature span in electrocaloric regenerator
	A. Torelló; P. Lheritier; T. Usui; Y. Nouchokgwe; M. Gérard; O. Bouton; S. Hirose; E. Defay
	2020-10-02
发表期刊	Science
出版年	2020
英文摘要	Current large-scale cooling devices use vapor compression refrigeration. The efficiency of air conditioners has been optimized, but they can be noisy and rely on problematic greenhouse gases. Two groups now present designs for electrocaloric cooling using lead scandium tantalate capacitors that change temperature under an electric field. Y. Wang et al. obtained a very large heat flux using only solid materials and a cooling fan to remove heat from their device. Torello et al. used fluids for heat transfer, leading to a very large temperature difference between the hot side and the cold side. The new designs demonstrate the potential for devices that might be competitive with vapor compression–based appliances with further optimization. Science , this issue p. [129][1], p. [125][2] Cooling devices based on caloric materials have emerged as promising candidates to become the next generation of coolers. Several electrocaloric (EC) heat exchangers have been proposed that use different mechanisms and working principles. However, a prototype that demonstrates a competitive temperature span has been missing. We developed a parallel-plate active EC regenerator based on lead scandium tantalate multilayer capacitors. After optimizing the structural design by using finite element modeling for guidance and to considerably improve insulation, we measured a maximum temperature span of 13.0 kelvin. This temperature span breaks a crucial barrier and confirms that EC materials are promising candidates for cooling applications. [1]: /lookup/doi/10.1126/science.aba2648 [2]: /lookup/doi/10.1126/science.abb8045
领域	气候变化 ; 资源环境
URL	查看原文
引用统计	被引频次：115[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/298064
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	A. Torelló,P. Lheritier,T. Usui,et al. Giant temperature span in electrocaloric regenerator[J]. Science,2020.
APA	A. Torelló.,P. Lheritier.,T. Usui.,Y. Nouchokgwe.,M. Gérard.,...&E. Defay.(2020).Giant temperature span in electrocaloric regenerator.Science.
MLA	A. Torelló,et al."Giant temperature span in electrocaloric regenerator".Science (2020).