[Stoves] is this new?

[Alex English]

Crispin,
Its been a while since I saw the Vesto. It looks from the pictures like 
there are secondary air holes all the way up the central tube. Is that 
current?
Seems like the top rows would just be adding tramp air (unemployed air).

Alex

On 20/01/2013 9:42 PM, Crispin Pemberton-Pigott wrote:
>
> Dear Marc and Ron and All interested in air flows
>
> This is a response to questions about air and Marc's tube.
>
> Here is an old photo of secondary air entering the combustion chamber 
> of a Vesto pushing the flame to the centre. This accomplishes the 
> following:
>
> Keeps the fire away from the wall, reducing the temperature it has to 
> survive (a lot)
>
> Keeps the flame going
>
> Not allowing it to spread to one side away from the smoke on the other 
> side that might otherwise 'get away'.
>
> Provides turbulent mixing of flame, hot secondary air and smoke
>
> Allows for preheating to a significant degree (250-500 C)
>
>

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