![]() Consider the use of metal pots for cooking.Design the stove so that the pot comes as close to the fire as possible.A good air draft into the fire to increase the air flow speed.Drive the flow of combustion gasses around the edge of the cooking pot.Insulating every element in contact with the fire and hearth. ![]() Some of the principles for building a rocket stove are: Heat exchanger: a tubular metal shield that forces hot gases from the chimney to pass over the sides of the cooking vessel (like the one used in the Rocket stove mass heater).Fuel shelf: a flat plate to hold the fuel clear of the bottom of the magazine to allow air to flow underneath (like the one used in the CCAT rocket stove).Fuel magazine: a short length of steel or ceramic pipe fitted horizontally into the base of a chimney.Chimney: this can be made out of a metal box -such as a 5-gallon tin can or a 16 gallon oil drum like the one used in the WaterPod Rocket Stove- or pipe standing vertically to support the cooking vessel like the one used in the Rocket Lorena Stove.The Justa stove, for example, is a cousin of the rocket stove adapted for indoor use and family cooking needs.Ī rocket stove is a simple mechanism mostly made of the following elements: This attention has resulted in a number of adaptations intended to improve convenience and safety, and thus the size of the target audience. As such, sufficient fuel for cooking tasks can be gathered in less time, without the benefit of tools, and ideally without the destruction of forested areas.īecause these qualities improve local air quality, and discourage deforestation, the rocket stove has attracted the attention of a number of appropriate technology concerns, which have deployed it in numerous third-world locales (notably, the Rwandan refugee camps). Furthermore, the design of the stove requires small diameter lengths of wood, which can generally be satisfied with small branches. The rocket stove operates roughly twice as efficiently, and substantially more cleanly, than the open fire cooking methods still used in many areas of the world. Because open fires are located on the floor of the dwelling, children can easily fall into the fire. The third drawback of traditional wood fires is the danger to children. The inefficient transfer of energy requires the use of more wood, which has to be harvested from the surrounding environment, causing environmental stress. Most of the released energy in the wood is wasted heating the surrounding air rather than heating the cooking vessel. Traditional open pit wood fires are very efficient at turning wood into energy, but inefficient at transferring the released energy into the cooking vessel. Biomass fuels release large amounts of air pollutants when burned on traditional open pit fire, and these pollutants become concentrated in inadequately ventilated homes and dwellings, generating respiratory problems to families, especially in rural areas.Īnother concern with traditional wood fires is the environmental cost due to inefficiency of fuel consumption. Feeding fuel at the correct rate creates cleaner combustion, reducing smoke.Ī rocket stove addresses air quality problems arising from the use of an open pit fire for cooking and home heating. Wood is burned at the tips and is pushed in towards the fire as it burns.The combustion chamber is usually in the shape of an elbow or letter 'L', so that wood is placed under a short internal chimney as it is fed into the stove.The combustion chamber is insulated in order to keep the fire hot (above 650 ✬) to burn the wood more completely, thereby reducing smoke (which is fuel that has not burnt completely).Heavy materials in contact with hot flue gases absorb heat that could have been used for cooking. The combustion chamber and interior stove parts are as insulative and lightweight as possible.There is a wide variety of designs amongst stoves included in the 'Rocket Stove' family, but they have the following characteristic features: Most rocket stoves are easy to build, and can be made with low-cost materials (the CCAT rocket stove for instance, costs only USD$84.02). They function under a similar principle as rocket stove mass heaters. A rocket stove is a variety of wood-burning cooking stove with a higher efficiency than other types of traditional ovens due to a better insulation and a better combustion process.
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