Development and Optimization of a Micro Magnetic Refrigerator

磁制冷是一种基于磁热效应的制冷技术，磁热效应是在磁场变化作用下引起的温度变化现象。本研究的主要目的是建立一个小型的磁制冷机演示器，并评估磁热材料与流体之间的热传递特性。实验和数值模拟结果表明，磁感应强度越大，磁感应温度越高。此外，还证明了在适当的流量和体积流量条件下存在最佳运行条件。

Magnetic refrigeration is a cooling technology based on the magnetocaloric effect, which is a temperature-changing phenomenon caused under the magnetic field alteration. The primary objectives of this study are to construct a small-type demonstrator of magnetic refrigerator, and to evaluate the heat transport characteristics from/to magnetocaloric materials to/from fluid. As results from the experiment and numerical simulation, the maximum temperature is obtained with larger magnetic intensity. In addition, the existence of optimum operating conditions is shown under the condition of appropriate flow volume and volumetric flow rate.