[TheForge] hot air does not rise

[Chris Worsley]

The truth comes in simple words! Well said Dave, without a lot of 
unimpressive BS ;-) .  Thanks.

Chris

Dave Brown wrote:

> At 12:29 01/03/04, you wrote:
>
>> I hate to start WW-3 but: hot gasses do not rise, they must be displaced
>> (via gravity) by cooler gasses in order for convection to take place. 
>> Hot
>> air does not have anti-gravity properties, but is can be displaced 
>> "upwards"
>> by cooler air which is denser, and therefore "heavier".
>
>
> Details, details, details.  It still boils down to warm/hot air rises, 
> cool air sinks.  Exhaust from a gas forge is warm/hot and will move 
> upwards, not towards the floor.  The mechanism of the action is moot.  
> It happens.  The CO and CO2 and the H2O and other byproducts of the 
> propane forge combustion will rise.
>
> Dave Brown
> Heritage Smithing
> Green Bay, WI