کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1198122 964695 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Predicting charring rate of woods exposed to time-increasing and constant heat fluxes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Predicting charring rate of woods exposed to time-increasing and constant heat fluxes
چکیده انگلیسی

This paper describes an investigation of the charring of wood exposed to a time-increasing heat flux and constant heat fluxes by using a modified partial differential equation (PDE) model, whose calculated result is validated by experimental result under time-increasing heat fluxes. It is assumed that the base of the char layer can be defined by the temperature of 300 °C. The results have shown that the rate of increase of heat flux and the density of woods significantly affect the charring rate and the charring rate of woods under time-increasing heat fluxes is smaller than that exposed to a constant heat flux. Linear regression conducted on the predictions of charring depth with time as the dependent time-increasing was suitable for time-increasing heat fluxes, while power regression was more suitable for constant heat flux. A successful experiential expression, which describing the relationship among char rate of woods and the increasing rate of heat fluxes and density of wood, has been suggested under time-increasing heat fluxes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Analytical and Applied Pyrolysis - Volume 81, Issue 1, January 2008, Pages 1–6
نویسندگان
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