高导热能力的蓄热装置传热性能研究

固液相变材料的导热系数极低，往往不能在规定时间内完全相变融化以吸收电子设备工作的热负荷，导致电子设备出现局部超温现象。文中采用数值仿真和试验测试的方法对高导热能力蓄热装置进行研究。采用均温板与蓄热装置一体化设计，均温板将点热源转换为面热源消除了电子产品温度峰值导致局部超温的问题，也增加了相变材料的吸热面积。同时在相变材料中设置铝合金板以及铝合金波纹板。通过上述设计，增大了石蜡的当量导热系数，增加了短时间内石蜡的融化量进而提高了蓄热能力。

Study on Heat Transfer Performance of Heat Storage Device with High Thermal Conductivity

The thermal conductivity of solid-liquid phase change materials is very low, so they often can not melt completely in a specified time to absorb the heat load of electronic equipment, which leads to local over-temperature. The high thermal conductivity heat storage device is studied in this article by numerical simulation and experimental methods. The integrated design of vapor chamber and heat storage device is adopted. The vapor chamber converts point heat source into surface heat source, eliminating the problem of local over-temperature caused by the temperature peak of electronic products, and increasing the heat absorption area of phase-change materials. At the same time, aluminum alloy plate and aluminum alloy corrugated plate are added into the phase change material. Through these designs, the equivalent thermal conductivity of paraffin is increased, the amount of paraffin melting in a short time is increased and the heat storage capacity is improved.