基于层次分析法相变材料的选择

Choice of phase change material based on AHP

为选择综合性能优异的相变材料,以相变焓、比热、导热率、密度、过冷度和价格为评价指标,依据层次分析法(AHP)的基本理论,建立了不同层次的指标评价体系和相变材料性能评价模型,通过评价模型客观确定各评价指标的权重向量得出相变材料方案层总排序结果。实例应用表明,基于AHP评价模型的相变材料选择结果与实际结果相吻合,较全面地考虑了相变材料的多种影响因素,避免了单一判据的局限性,并对各种因素的重要性进行对比分析,使性能评价结果更为科学,可作为相变材料性能评价的理论依据,为相变材料的选择提供一种可靠的方法。

To choose the phase change materials with excellent comprehensive properties,phase change enthalpy,specific heat,thermal conductivity,density,degree of super-cooling and price were used as evaluation index,the index evaluation system including three levels and six different attributes and the performance evaluation model of phase change materials were established according to the basic theory of analytic hierarchy process（AHP）.The weight of each evaluation index vector layer always sorting result for phase change materials were obtained by AHP method.Examples showed that the application was based on the AHP evaluation model of phase change materials selection result was consistent with the actual result,considering the overall variety of influencing factors of phase change materials,avoiding the limitations of a single criterion.It carried on the comparison and analysis of the importance of various factors to make the performance evaluation result more scientific.It can be used as the theoretical basis of performance evaluation of phase change materials to provide a reliable method for the selection of phase change materials.