Hybrid Cooking Stove

A Kerosene - Plant oil - Steam - Pressure stove

About the stove:

  • We at Servals have developed the hybrid stove in an attempt to conserve fossil fuel and use renewable energy.

  • The focus is on rural energy independence and hence the use of straight vegetable oil alone is considered.

  • Please note, that bio-diesel which is a refined product is not to be used and the stove is not designed to use bio-diesel.
What is the Hybrid Stove:

  • The stove uses up to 30 % plant oil and balance (around 70 %) kerosene.
  • In the event plant oil is costly or not available, the stove can function as a high efficiency kerosene stove using only kerosene.
Please note..

  • Viscosity of the plant oil used is critical for the proportioning of the capillaries.

  • Presently the design is for Pongamia straight vegetable oil, which is comparatively dense oil.
How it works:

Let me try to give you a quick brief on the how the stove works. Please feel free to contact me for more details.
  • Pump a little kerosene into the spirit cup and light it for preheating the burner.

  • Once preheated, apply pressure in the kerosene tank to reach the desired flame.

  • Once the burner top has reached red hot colour, plant oil and water can be pumped.

  • While switching off the stove, first the plant oil and water should be switched off and later kerosene can be switched off.

  • Pressure release valves are provided on all the three filler caps (i.e. kerosene, plant oil and water filler caps).


Here are some quick maintenance information:
  • We have provided a filter in the kit to strain the water and plant oil before pouring into the respective tanks. This ensures that the capillaries do not get clogged / blocked anywhere.
  • We have also made drain provisions for both water and plant oil to clean any sludge/deposits at the bottom.
  • Any blockage of the kerosene vapour nozzle can be cleared using the needle pricker provided in the kit.


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