棕榈酸甲酯/硬脂酸甲酯建筑节能相变材料

Methyl Palmitate/Methyl Stearate Building Energy Saving Phase Change Material

本文研究一种适用于夏热冬暖地区建筑围护结构的相变材料,该材料为棕榈酸甲酯和硬脂酸甲酯按一定比例混合而成,通过DSC检测相变温度及相变潜热,分析棕榈酸甲酯和硬脂酸甲酯不同比例时相变材料的性能。棕榈酸甲酯和硬脂酸甲酯质量比为4∶1时,相变材料的熔融温度为22.4℃、熔化潜热为188.7 J/g,该相变材料综合性能最佳,相变温度符合夏热冬暖地区建筑围护结构使用要求。将该相变材料与建筑材料结合制得相变墙体材料,能调控室内温度,从而降低空调能耗,在建筑节能领域具有可观的应用前景。

This paper studies a phase change material for building envelope in hot summer and warm winter area,which isthe mixture of methyl palmitate and methyl stearate with a certain ratio.Phase change temperature and latent heat of phasechange material was detected by DSC.When the mass ratio of methyl stearate and methyl stearate was4to1,the phasetransformation temperature of the material was22.4oC,and the latent heat was188.7J/g,which presents the bestperformance and the phase transition temperature meets the requirements of the building envelope in hot summer andwarm winter area.This phase change wall material is prepared by composing of phase change material and buildingmaterial,which can control indoor temperature and reduce energy consumption of air conditioner.It may have goodapplication prospect in the field of building energy conservation.