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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。
In order to select the phase change material with excellent comprehensive performance, the evaluation indexes of phase transition enthalpy, specific heat, thermal conductivity, density, undercooling and price are used to evaluate the indexes at different levels according to the basic theory of Analytical Hierarchy Process (AHP) System and phase change material performance evaluation model, through the evaluation model to objectively determine the weight vector of each evaluation index to get the total ordering results of the phase change material program layer. The example application shows that the selection results of phase change materials based on the AHP evaluation model are in good agreement with the actual results, and more comprehensive consideration of various influencing factors of the phase change material avoids the limitations of the single criterion and is important for various factors Sex comparative analysis, the performance evaluation results more scientific, can be used as a theoretical basis for the performance evaluation of phase change materials, to provide a reliable method for the selection of phase change materials.