Nik Efs wrote:Hi to everybody, I am new in this forum and this is my first post.
I am trying to built a rocket stove for indoors heating and I have come up with a design that looks pretty good and functional. However I builted the stove and I realised that is not working properly. It needs redisgn but I dont know the causes and the mechanics around the problematic airflow.
So I am trying to introduce my design
Picture A shows the dimensions of the burner. I have installed a glass window in front but is always closed. The feeding of the wood comes from the top right
Picture B shows how the burner is supposed to work... and it works exactly like this (rocket effect).
Picture C shows the final design of my rocket stove with the outer shell installed.
Picture D shows how the rocket stove works with outer shell installed. The airflow operates completely in reverse.
Does anybody knows why this happen? It is all about physics and I don’t have too much knowledge on it.
Phil Stevens wrote:
Now the latest technology for connecting rods is fractured rods where the rod is machined as one piece and then placed in a giant machine that breaks the end of the rod off.
But if you take a really precise measurement of the length of the rod before fracturing and after the parts are rejoined, they will be different and the refashioned rod will be longer. Yes, you get a better joint because the mating surfaces are perfectly matched, but the roughness of the break is what creates the gap. Even if you cleave a crystal along a plane and then put the faces together in a vacuum, there will be space larger than the molecular bonds that used to be there.
As far as the showing goes, you can look up bulking factors for all sorts of solid materials and laugh all you want, or you can do some measurements and try it out yourself.