SiO_(2)气凝胶复合绝热毡在导热油管的应用优势分析

ANALYSIS OF APPLICATION ADVANTAGES OF SiO_(2) AEROGEL COMPOUND INSULATING FELT IN HEAT CONDUCTING TUBING

通过分析SiO_(2)气凝胶毡和传统保温材料硅酸铝棉的隔热性能,应用实验及实际工程案例分别对两种材料的表面温度、热流密度进行定量分析,对热成像进行定性分析。随着加热温度的升高,硅酸铝棉相比于SiO_(2)气凝胶毡的表面温度和热流密度都会增大。二者相比,硅酸铝棉表层会出现大量的裂纹,气凝胶复合绝热毡的保温隔热性能更好。从实际应用角度分析,使用硅酸铝棉保温会造成室内温度过高,不利于人员活动,加速设备老化,降低使用年限。按照现有工况进行气凝胶毡整体保温,室内温度在39℃左右,大幅度降低室内温度。

In this work, the thermal insulation properties of silicon dioxide aerogel felt and traditional thermal insulation material aluminosilicate cotton are analyzed. The surface temperature, heat flux and thermal imaging of the two materials were qualitatively analyzed by quantitative analysis. It is concluded that the surface temperature and heat flux of aluminosilicate wool increase with the increase of heating temperature compared with aerogel felt. Compared with aluminum silicate wool, there are a lot of cracks on its surface, and aerogel compound insulating felt has better thermal insulation performance. From the point of view of practical application, the high indoor temperature caused by aluminosilicate cotton insulation is disadvantageous to human activities, accelerate the aging of equipment and reduce the service life. According to the existing operating conditions for the overall insulation of aerogel felt, indoor temperature of about 39℃, significantly reduce the indoor temperature.