相变储能复合材料相对导热系数研究

Study on Relative Thermal Conductivity of Phase Change Energy Storage Composite Materials

为了科学评价相变储能复合材料在建筑工程中应用的节能效果,根据相变材料的性质,从能量的角度提出了相对导热系数的概念及其测试方法——能量补偿法.利用自行研发的测试装置,对绝热材料导热系数参比板、普通石膏板、膨胀珍珠岩复合板以及相变石膏板进行了测试,并采用所述相对导热系数法来表征其导热性能.试验表明:所提方法不仅可测相变储能复合材料的相对导热系数,而且对普通保温材料也适用,能较好地实现相变储能复合材料的热工性能评价,为其在建筑节能工程中的应用提供技术支持.

In order to evaluate the energy efficiency of building applications, the concept of relative thermal energy, based on properties of phase change materials. phase change energy storage composite materials in conductivity was proposed from the perspective of And the testing method, i.e. energy compensation method for implementing the concept was also proposed. A self-developed device was made use of to test refer- ence board, ordinary plasterboard, expanded perlite composite board and phase change plasterboard for ther- mal conductivity of thermal insulation（reference board）. Results show that the proposed method can not only test the relative thermal conductivity of phase change energy storage composite materials, but also traditional insulation materials. And it can be used to achieve the thermal performance evaluation and provide technical support for phase change energy storage composite materials in building applications.