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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