Did you know you can build a rocket stove with NO equipment? I dont have a link to this, maybe there's something on you tube, but its easy to describe...
Dig a hole in the ground, maybe 30cms diameter, size isnt important. Dig it 20-30 cms deep, again size isnt important. Then, dig a smaller hole some 30cms away from the main hole, but a small hole, 10cm? and tunnel this hole down and then sideways to join the first hole..
and hey presto, a rocket stove in the earth.. its usually temporary, so build the second hole, the air vent in effect, so it catches the prevailing wind.
From the datas you gave I now found yet another way to build a rocket stove :
Never spending another dime on fuel, gas, or wood.
Pieces of stove pipe is all that is needed. Good sizes for a "Rocket-Stove Venturi Camp Cooker" are 3inch and a short 4inch inlet pipe. From there, you'll need a skillet, wok, dutch oven, or flat cooking surface of some kind. Now dig a trench in the ground a little longer than the pan is wide. On one side place the 4inch pipe to use as the feeder pipe. Then place the 3inch stove pipe down along the opposite side of the pan to be used as the throat or chimney. It should be at least 6"-8" long. Dig the hole larger directly underneath the cooking surface. Pack the excess dirt from the hole all the way around to seal up cracks and allow for good air flow.
How To Build A 16 Brick Rocket Stove For Around 6 Dollars
OK so what is a rocket stove you ask? Well its design means that heat is generated at the top of the stove therefor ideal for heating a pot or kettle extremely efficiently and quickly saving time and money.
A rocket stove is an elegant-yet-simple stove design that generates high temperatures, with near-complete combustion of fuel. It does this by means of an enclosed chamber with a vertical chimney, which creates a strong convection effect or “draw”. This movement of air achieves a similar effect to that gained when a person blows on a fire. Another benefit of the rocket stove principle is that it achieves high efficiency, with much more of the heat being focused towards the cooking surface than if a simple open flame was used. There are numerous rocket stove designs on the market, however this super off-grid tutorial will teach you how to make your own using 16 bricks – with a cost of either a few dollars or for free if the bricks are lying around already! There are many things about this design that are fantastic – bricks are readily available in many places – and also they form a stable, sturdy surface which lends itself well to sitting a cooking pot on top. There is an additional “survival benefit” of this tutorial which is that in a disaster scenario, perhaps post-earthquake or in a war zone, loose bricks may be abundant. With this knowledge, you could make fire to warm food from the rubble lying around. It’s a popular technique in the 3rd world. In the video, a shop-bought trivet is used – however there are numerous options available here. You could use an old iron hob salvaged from a gas stove, a couple of pieces of rebar or any other iron grillwork that suits the purpose. If you are in a survival situation, it is often about having the skills and knowledge to make what you need from what is available.
Ok here’s a link to a full 6 Dollar Rocket Stove tutorial: