高温环境下硅酸铝纤维的隔热性能

Heat-Shielding Properties of Aluminum Silicate Fiber in High Temperature Environment

文摘硅酸铝纤维供应商往往只提供客户硅酸铝纤维在某一温度的热导率,难以指导隔热结构的设计。本文针对市场上常用的硅酸铝纤维板,设计了隔热性能测试装置,实验获得硅酸铝纤维温度随时间的变化曲线,并进行了有限元仿真分析。研究表明,硅酸铝纤维隔热效果稳定且具有一定的抗热辐射能力。有限元分析结果与实验数据基本一致,说明采用有限元分析方法能够支持设计人员较好预测隔热效果。

Generally, the suppliers of aluminum silicate fiber only offer customers thermal conductivity at a cer- tain temperature, which make it difficult for engineers to design those insulation structures. In this study, in order to provid reliable temperature data to finite numerial simulation, an experiment was designed to study the heat-shielding properties of aluminum silicate fiber in high temperature environment. It indicates that the heat insulation efficiency of aluminum silicate fiber is stable with the ability to resist thermal radiation and the numberical calculation results a- greed with experimental data. The study above lays a solid theory foundation for the design of insulation structure.