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磁制冷材料MnFeP0.45As0.55的热力学循环性能分析
Authors
党丽琴
庄小玲
+3 more
李炎
杨智敏
林国星
Publication date
15 July 2019
Publisher
Abstract
一级相变磁制冷材料MnFeP1-xAsx具有巨磁热效应,其在制冷循环中的热力学性能值得探索。本文以MnFeP0.45As0.55的等磁场热容随温度变化实验数据为基础,应用热力学分析和数值计算方法,获得0T、2T应用磁场下的熵温曲线,并设计不同温跨的多种回热Ericsson制冷循环,计算制冷循环的主要热力学参量,揭示非平衡回热量、净制冷量、性能系数等随制冷空间温度变化规律,同时还与Gd、Gd5Si2Ge2在10 K温跨时的净制冷量进行比较,结果表明MnFeP0.45As)0.55的最大净制冷量更大。国家自然科学基金资助项目(No.51776178
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Last time updated on 20/11/2020