我们知道,如果没有可靠的建筑和隔热材料的热物理系数实验数据,就无法进行实际的建筑热工计算以及保证建筑围护结构的热工质量。目前,最常用的测定建筑材料导热系数的方法,是以热稳定状况为基础的“平板法”。用这种方法测定导热系数尚存在一些较难克服的缺点: 1.热稳定状况的建立需要较长的时间, We know that if there are no reliable experimental data on the thermal susceptibility of buildings and thermal insulation materials, it will be impossible to perform actual building thermal calculations and ensure the thermal quality of the building envelope. At present, the most commonly used method for determining the thermal conductivity of building materials is the “flat plate method” based on thermal stability. There are still some insurmountable disadvantages in determining the thermal conductivity using this method: 1. The establishment of thermal stability requires a long time,