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首页> 外文期刊>International Journal of Heat and Mass Transfer >Solid-state thermal diode with shape memory alloys
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Solid-state thermal diode with shape memory alloys

机译：带有形状记忆合金的固态热敏二极管

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Analogous to the electronic diode, a thermal diode transports heat mainly in one preferential direction rather than in the opposite direction. Phase change thermal diodes usually rectify heat transport much more effectively than solid state thermal diodes due to the latent heat phase change effect. However, they are limited by either the gravitational orientation or one dimensional configuration. On the other hand, solid state thermal diodes come in many shapes and sizes, durable, relatively easy to construct, and are simple to operate, but their diodicity (rectification coefficient) is always in the order of η ～ 1 or lower. Thus, it is difficult to find any potential applications. In order to be practically useful for most engineering systems, a thermal diode should exhibit a diodicity in the order of η ～ 10 or greater. In this study, a passive solid state thermal diode with shape memory alloy is built and investigated experimentally. The diodicity is recorded at about 90. This promising result could have important applications in the development of future thermal circuits or for thermal management.
机译：类似于电子二极管，热敏二极管主要沿一个优先方向而不是相反方向传递热量。由于潜在的热相变效应，相变热二极管通常比固态热二极管更有效地整流传热。但是，它们受到重力方向或一维结构的限制。另一方面，固态热敏二极管具有多种形状和尺寸，经久耐用，相对容易制造，并且易于操作，但是其二向性（整流系数）始终在η〜1或更低的数量级。因此，很难找到任何潜在的应用。为了对大多数工程系统具有实用价值，热敏二极管应显示出η〜10或更大的二值性。在这项研究中，建立了带有形状记忆合金的无源固态热敏二极管，并进行了实验研究。记录的二位性约为90。这种有希望的结果可能在未来热电路的开发或热管理中具有重要的应用。

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