Experimental study on upward flame spread characteristics of external thermal insulation material under the influence of porosity

چکیده مقاله :
Upward flame spread characteristics over extruded polystyrene (XPS) foams with different porosities
has been analyzed through experiments. In this paper, the average flame height and
average maximum flame temperature first rise and then drop with increasing porosity, which is
affected by the fuel and oxygen competition mechanisms. For P (the porosity of XPS samples)
≤35%, the positive effect of pores plays a dominant role; the average flame height and average
maximum flame temperature increase with the increasing porosity. While the negative effect of
pores plays a dominant role when P > 35%, causing the average flame height and average
maximum flame temperature decrease with the increasing porosity. Modeling and experiments
were conducted to study the heat flux from flame. The value of radiation is obviously higher than
convection through formula derivation and the experimental results have high similarity with the
theoretical results.

توضیحات تکمیلی :

مقاله ISI انگلیسی اصلی
سال انتشار:2018
OPEN ACCESS می باشد و به طور رایگان از سایت ساینس دایرکت قابل دانلود است
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 9 صفحه

نویسندگان/توضیحات : Qing xuan Menga,b,c, Guo qing Zhua,b,c,⁎, Miao miao Yua,b,c, Zhen huan Lianga
تاریخ ارسال : 1397/10/06
تعداد بازدید : 322
کلمات کلیدی : XPS Porosity Upward flame spread characteristics Heat transfer
تعداد صفحات : 9
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