【摘要】 本文介绍了预测多孔材料导热系数的主要计算方程,通过岩棉保温材料和微孔硅酸钙保温材料导热系数的预测,指出这些方法在预测含有结构水的微孔硅酸钙保温材料导热系数时,与实测值会有较大的偏差,进而利用岩棉和微孔硅酸钙保温材料热重(TG)和差热(DTA)曲线,研究了材料结构水对其导热系数的影响,提出了预测含有结构水的多孔材料导热系数的修正方法,其结果与实测值相当吻合。更多还原

【Abstract】 In this paper mainly predictive expressions for porous materials are described.The thermal conductivities of rock wool and calcium silicate insulating materials havebeen calculated by these expressions,however,it has been found that there is somedeviation of calculated values from measured data for these insulating materialscontaining structural water.The effect of the structural water on thermal conductivityhas been studied by means of TG-DTA curves of rock wool and calcium silicateinsulating materials,and a modified method for predicting the thermal conductivitiesof rock wool and calcium silicate insulating materials has been proposed.Thepredicted values obtained by means of the modified method closely agree with themeasured data.更多还原