Firebox and firepan sketches, etc. Post them here.....

Here's a sketch of a horizontal single burner used in a real end location with draft tubes through the firepan, cast refractory lining, and a brick arch.

The gentleman who msent me the sketch above also sent this explainatory email:

My concept is that you have a large number of small
tubes so the air flow is broken as much as possible. They do slightly point away
from the burner radially. The burner again should have a radial or in line flow
with the air pipes. The whole concept is to recreate the heating effect in the
bottom of the fire box as close to that as a coal burner as possible as in
multiple small fires round each of the air pipes just like the holes between the
lumps of coal?

Horizontal burners this time.