Re: [Phys-l] ignition point of paper: 451 deg... is it F or C ?

[Brian Whatcott <betwys1@sbcglobal.net>]

Not quite relevant to your mind-picture, I know.   But in looking over
some results, I was surprised to learn that the pyrolytic exotherm
for some materials (I seem to remember paper was one) was
still  exothermic in the absence of oxygen (!) so a temperature rise
was noted at some tipping temperature for some natural materials
heated in a  nitrogen atmosphere.
(not the oxygen rich compounds I would have expected...)

Brian W

Bernard Cleyet wrote:
> Bryan's reference may contradict my thought that the rate of temp.  
> rise strongly affects the ignition temp.   If very slow, pyrolysis  
> will result in carbonization and only an extreme temp. will result in  
> ignition.
>
> bc, kitchen physicist, piped.
>
>
>   
> >  ...saw dust.
> >  From Session V, see  Kinbara, U Tokyo:  Autoignition of Wood  
> > Materials
> >
> > *http://tinyurl.com/n5tl4b*
> >
> > Notice his predicted tipping temperature for this configuration.