One-Dimensional Modeling of Heat Transfer in Intumescent Coating Material

膨脹塗料－維熱傳模型

吳翰林(Han-Lin Wu) ； 許聖彥(Sheng-Yen Hsu)

《燃燒季刊》 92期 (2016/02) Pp. 4-15

https://doi.org/10.30041/CQ.201602_(92).0001

摘要

本研究開發一個新的膨脹塗料模型，其模型包含塗料受熱膨脹後，形成多孔隙碳層的內部輻射熱傳現象。在模型的數值處理上，將膨脹的效應考慮在性質參數內，使隨著塗料受熱膨脹而改變，而不調整網格系統的分佈與變化。模擬結果顯示本模型可成功模擬膨脹型塗料，受到高輻射熱源的加熱膨脹現象與塗料內部的熱傳現象。此外，本研究也分析熱傳導係數與熱輻射消光係數，對防火塗料的熱阻絕表現之影響。

關鍵字

膨脹型塗料 ； 數值模型 ； 多孔隙介質 ； 防火安全 ； 熱隔絕

並列摘要

A new intumescent coating model including the equation of radiative heat transfer in the expanding porous carbon layer is developed in this paper. In addition, the numerical treatment for the expanding coating layer is by considering the expansion effects on the property parameters, instead of dealing with the variation of grid system. The results show the reasonable expansion behaviors and heat transfer phenomena of intumescent coating as subject to a high heat flux. In addition, this study also shows significant effects of thermal conductivity and radiant extinction coefficient on the transient and steady performances of the intumescent coating.

並列關鍵字

Intumescent Coating ； Numerical Model ； Porous Medium ； Fire Safety ； Heat-Blocking