金属材料增强的石蜡储热性能研究

Study on Heat Storage Performance Enhancement of Paraffin by Metallic Material

本文主要通过实验对比研究铝翅片和泡沫金属铜对石蜡的储热性能和储热密度的综合影响,分别测试封装纯石蜡、封装石蜡的同时加装平行铝翅片、将石蜡填充到泡沫金属铜空隙三组散热器的热源温度上升曲线。实验得出:加装铝翅片和填充泡沫金属铜能使热源与石蜡的平均温差分别降低76%和18%,同时使储热阶段热源的平均温度分别降低22.2℃和9.5℃,因此加装铝翅片增强石蜡储热性能强于填充泡沫金属铜。加装铝翅片和填充泡沫金属铜导致整体储热密度分别减少40.3%和4.2%,从储热密度方面考虑泡沫金属铜明显优于铝翅片。因此我们需要综合考虑储热性能和储热密度的影响选择最合适的增强石蜡储热的方式。

In this paper,experiments were conducted on effects on heat storage performance and heat storage density of paraffin using aluminum plate-fin and copper metal foam.Temperature-time curves of heat source of pure paraffin,aluminum plate-fin and copper metal foam were obtained,respectively.The results show that the temperature difference between heat source and paraffin was reduced by 76%and 18%,and the average temperature of heat source during heat storage process was reduced by 22.2℃ and 9.5℃ with the use of aluminum plate-fin and copper metal foam,respectively.From that point,aluminum plate-fin is better than copper metal foam.On the other hand,the total heat storage density was reduced by 40.3%and 4.2%using aluminum plate-fin and copper metal foam,respectively.From that point,copper metal foam is better than aluminum plate-fin.Therefore,the suitable heat storage enhancement of paraffin is chosen based on the combined effects on heat storage performance and heat storage density.