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The ovens can be divided into four categories. House, industry, metallurgy and combustion. The household ovens are designed to be installed inside or outside the homes and are mainly used for heating water and keeping the homes warm in winter. Usually, fuels such as natural gas, coal, water and wood are used to run domestic furnaces.
Gas Ovens: These days, gas ovens are the most preferred form of household. These are powered by natural gas, which can be purchased from a local company. Natural gas is more efficient and cleaner than most other household fuels. In general, gases such as liquid petroleum gas (LPG), biogas and methane gas are used to fire a gas furnace.
The gases are equipped with a lighter and a thermostat that senses the room temperature. When the thermostat detects a temperature below the programmed temperature, the igniter lights up and then the oven starts to burn the gas. The resulting air will be distributed throughout the housing through a duct system. In some gas ovens, especially in the old ones, the gas lights up with a pilot light. Most of the newer gas ovens use an electric spark to ignite the gas.
Oil furnaces: Many homeowners prefer to use oil furnaces to heat their homes. Oil is the readily available natural resource, while the other forms of furnace fuels are not so abundant. However, the oil furnaces are not as efficient as gas ovens and require more electricity than the gas.
Most oil furnaces have a storage tank from which the oil can be led into the combustion chamber in the furnace, where it will be atomized. In the oil furnaces, high voltage electrodes are used to ignite the atomized fuel. The heat is then circulated through the housing with a cross-air circulation fan.
Wood stoves: Wood stoves use wood pellets or logs to generate heat. Both indoor and outdoor wood-fired ovens are available on the market. They use either hot water or forced flow to produce and circulate the heat. Typically, the wood is cheaper than the other ovens and natural wood ovens are cost effective than most other domestic ovens. A wood-burning stove consists of many parts, including a cabinet, sealed firepot, fan, fan, thermostat and a chimney.
All household ovens, especially the gas, oil and wood ovens, must be cleaned regularly to maintain an efficient heating system. If not properly maintained, these furnaces may emit hazardous fumes. Here they should be regularly checked by an experienced professional, at least once a year. The furnaces that have higher AFUE values are more efficient and require much less fuel.
Electric ovens are also available on the market. The main advantages of electric ovens are that they are safer than other household ovens and do not produce carbon monoxide or other hazardous fumes. However, these furnaces are very expensive and it may not be possible for everyone to install an electric furnace in their homes.
Now you have a much better overview of the different types available in the market, hope it helps your decision making.