考虑导热热阻的锅炉喷涂保温结构干燥时间研究

Study on Drying Time of Spraying Insulation Structure of Boiler Considering Thermal Resistance

给出了锅炉纤维喷涂保温结构的干燥方案,对其传热环节进行了分析。分析了现有干燥计算模型,并指出现有干燥模型的局限性。提出考虑纤维喷涂保温结构内部导热热阻的干燥时间的计算方法。通过该模型计算结果,总结了空气温度和保温厚度与干燥时间之间的关系。并通过室内试验,验证了该计算方法用于计算纤维喷涂保温结构干燥时间的可行性。

Drying scheme of aluminum silicate spray insulation structure of boilers is given. The heat transfer of this structure is analysed. The limitations of existing drying computation models is pointed out. A method consider-ing thermal resistance to calculate drying time of fibre spray insulation structure is propounded. The relation be- tween drying time and air temperature, insulation thickness is summarized. At last, this drying time calculation method of aluminum silicate spray insulation structure was validated by indoor test