To clarify how magnetocaloric properties of a magnetic refrigerant (MR) are reflected in the magnetic refrigeration thermodynamic cycle, the AC susceptibility χ of the La(Fe,Si)H-based magnetic refrigerant (MR) that makes up the random-packed bed component of an active magnetic regenerative module was measured during heat cycle motion. The variation in χ was projected onto entropytemperature ( diagrams to correlate the local MC properties of the MR and the heat-pump action of the module. A maximum temperature span (Δ) appears when Δ adaptively covers the phase-transition zone of the diagrams. The adiabaticity against the field change was broken when the MR exhibited a steeply - change. The Influence of the heat load on the local cycle attributed a collapse of Δ to the expansion of unworkable paramagnetic bed segments.

中文翻译：

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通过原位磁观测揭示主动磁再生床组件内 La(Fe,Si)13Hy 基制冷剂的熵特征

为了阐明磁制冷剂 (MR) 的磁热特性如何在磁制冷热力循环中反映出来，我们计算了组成随机填充床组件的 La(Fe,Si)H 基磁制冷剂 (MR) 的交流磁化率 χ在热循环运动过程中测量了主动磁再生模块的性能。 χ 的变化被投影到熵温度（图上，以将 MR 的局部 MC 特性与模块的热泵作用相关联。当 Δ 自适应地覆盖图的相变区域时，会出现最大温度跨度 (Δ)。当 MR 表现出急剧变化时，绝热性就会被破坏。热负荷对局部循环的影响将 Δ 的崩溃归因于不可使用的顺磁床段的膨​​胀。