【摘要】 用"两步法",即首先制作相变储能骨料,再采用相变储能骨料,用普通混凝土的制备技术配制了相变储能混凝土.实验结果表明,采用该方法可以在混凝土中储存足够的液体相变材料,配制的相变储能混凝土的储能功能与商业相变材料相当,可以满足实际应用的要求;多孔材料孔结构的几何特征对液体相变材料在多孔材料中的吸收和储存有较明显的影响,具有较高孔隙率、孔结构内部连通性较好和在边界区域具有输运通道的多孔材料能够吸收和储存较多的液体相变材料.相变材料在多孔材料中的体积分数对其相变行为也有显著的影响.更多还原

【Abstract】 Phasechanging energystoring concrete was prepared by means of a socalled twostep method. At the first step, phasechanging energystoring aggregates were fabricated, then at the second step, normal method for preparing concrete and the phasechanging energystoring aggregates were used. Test results show that adequate amount of liquid phasechanging material can be stored in concrete to render concrete energystoring capability similar to that of commercially available product. Test results also show that the geometrical feature of the pore structure of porous materials has significant influence on their absorption ability of liquid phasechanging material. In addition, the volume fraction of phasechanging material in concrete has remarkable effect on the phasechanging behavior of concrete.更多还原