According to this image, air intake is supposed to flow from below the fuel shelf:
Why is this the case? Air would also flow in from above the shelf - right? In fact, wouldn't most of the air flow in from above since that's where the flame is (shortest distance)? Air would need to take a longer route if it comes in from below the shelf.
Location: Southern alps, on the French side of the french /italian border 5000ft high Southern alpine climate.
posted 1 year ago
Air comes above and below the shelf. But above the firewood blocks the tunnel partly, and the air takes the path of least resistance, under the shelf.