just tinkering wrote:I tend to agree with your statements. Inlet air temperature may be a factor (hot or cold) , the angle of approach may be a factor. That is why I think that the Air Barrier concept needs to be explored as I think that there are good things going on this this design.
The second thing that the air barrier does is that it guides the inlet air in towards the stove perpendicular to the flames. I suspect that the flames running out from the bottom of the pot are pre-heating the inlet air going towards the stove. This effect is pronounced on the ACORN and Tea Light stoves and less so on other types. The whole concept of pre-heating the air deserves more attention and could yield some great stove designs.
I would think incoming air would follow the path of least resistance, upward along the sides of the pot.
It's hard for me to envision the flames running out from the bottom of the pot are pre-heating the air. I see the entire air space between air barrier and pot being heated by radiation off the windscreen. This would cause the fuel temperature to rise and rapidly evaporate and burn faster. More fuel being burned would cause a reduction in boil times.
SuperCat stoves burn fast, boil 2 cups in about 4 min. I think they burn in a "radical" fashion
Your windscreen concentrates the heat around the pot, adds to efficiency.
I'm still thinking