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Anonymous Poster

451 Degrees

07/27/2009 7:45 AM

I was interested to find out this past weekend that paper (basic cellulose based) has a flashpoint of 451 F. Also in finding this out, I've heard that technically the flame of any fire is always at 451 degrees (something about an intensive property) and what causes a temperature in the area hotter than 451 is the amount of energy the fire is burning and transforming into heat. I found this to be an odd statement and to be honest I dont believe it, any thoughts/comments?
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English Rose
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#1

Re: 451 Degrees

07/27/2009 9:01 AM

I'm surprised you hadn't heard about the flashpoint before, it's given on the flyleaf of this book.

I don't believe the temperature of flame comments either, unless it has something to do with near-field and far-field effects, which would be affected by convection rates, combustion chamber sizes, etc.

Just guessing - are there any combustion experts out there?

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jack of all trades
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#2

Re: 451 Degrees

07/27/2009 4:08 PM

It is a bit hard to reach the flash point of paper with a naked flame because generally the flame has to be so close it will ignite the paper directly (by setting fire to it).

Have a look at the following links, also there is plenty of information on the web regarding this.

http://en.wikipedia.org/wiki/Flash_point

http://en.wikipedia.org/wiki/Autoignition_temperature

http://en.wikipedia.org/wiki/Spontaneous_combustion

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