What are Rocket Stoves?

Rocket Stoves are super efficient wood burning stoves. They can be used to heat water, cook
food, heat cob furniture, heat baths, heat ovens and many other functions being tried and tested by thousands worldwide.Developed originally by Dr Winiarski, they were designed for cooking and help to reduce smoke inhalation in the cooking and heating environment, potentially saving millions of lives annually.

Looking down the burn chamber of the oven

To understand how rocket stoves work, there some underlying principles worth remembering. To achieve an efficient combustion at a high temperature you must:

  • Ensure a good draft in to the stove, around and through the wood in the fed chamber
  • Control the use of fuel
  • Insulate the stove so heat is not lost through radiation
  • Ensure the heat riser (chimney) is at least twice the length of the burn chamber (horizontal section)

The wood is fed in to the short feed chamber on the left. Most of the combustion occurs in the burn tunnel, the horizontal section. The heat is pumped through and up the heat riser or chimney on the right and out.

Wood is fed in the short burn chamber, starting with small grade/kindling and news paper and working up slowly to bigger pieces. The gases in the wood heat up, expand, move through the burn tunnel and up and out. Gases are burnt and then the remaining carbon as embers on the bottom. A complete combustion occurs as the fuel is burnt in such a confined environment and insulated from the outside of the stove to prevent heat escaping and lowering the overall combustion. The insulation will help the stove burn up to temperatures of around 1100 degrees Fahrenheit. However, tests have been carried out and a maximum temperature of 1921F was achieved.

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