A wood gasification boiler is a kind of clean stove that allows you to heat your home better than eco-pea. It burns wood in a low oxygen environment. It provides exceptionally low heating cost, as well as a clean burning process.
Does the way you burn in a gasified wood boiler matter?
The chemical components in wood are carbon and water. Their combination in the correct combustion process makes wood an ecological fuel, environmentally friendly. Importantly, there are virtually no harmful substances in wood, i.e. chlorine, heavy metals or sulfur.
During combustion, water turns into water vapor, while carbon combines with oxygen. Incorrect combustion will result in dense smoke along with a suffocating and unpleasant odor. In turn, incomplete combustion of wood gas will result in too low a combustion temperature, which can be caused, for example, by high humidity of the wood. It is also important to have an optimal supply of air, which is necessary for proper combustion. Prolonged and incomplete combustion of wood gas can also result in too low heating water return temperature. The process of improper combustion results in harmful substances (e.g., carbon monoxide) and smoke or tar.
How can we optimize the operation of a wood boiler?
Correct combustion technique allows you to burn up to 30% less fuel. When deciding on a gasifier boiler, it is important to remember that you can not burn eco-pea or coal in it. This furnace is designed exclusively for burning wood. This type of boiler belongs to the so-called lower combustion, which allow smokeless combustion.
The most important factor in optimizing a wood boiler is its correct selection of power, based on the square footage. When purchasing it, the actual heat demand should be taken into account. Too much power will generate additional costs, moreover, the boiler will not work efficiently. One of the most important considerations for the boiler is low moisture fuel. Otherwise, the boiler will not work properly, which will translate into a much smaller effect of the heat obtained.
When optimizing the boiler, it is also important to optimally configure the control system and correctly set portions of the air supply. Such action will allow the combustion and gasification of wood gas in a correct and optimal way, so it is possible to achieve more than 90% efficiency.
How to optimize the operation of a wood gasification boiler?
One of the most important issues is the correct choice of fuel. So, what kind of wood for a central furnace? Deciduous woods, will work best, as they have less resin and produce much less soot and tar. Also key is the right moisture content, i.e. ok. 12-20%. This is the optimal value that will ensure efficient heating. It is therefore important to season the wood properly, i.e. in a dry and ventilated place. Proper air circulation is essential. The optimum amount of air from the outside will ensure the correct combustion process. It is good for the boiler to have a built-in fan to prevent smoke backflow, as well as to stabilize the operation of the stove. No less important is regular cleaning and servicing of the boiler, chimney decontamination and correct operation of all components.
What is the correct temperature on a wood stove?
The wood gasification boiler functions properly when,when a high temperature is maintained. The water that circulates in the central heating system should not be too cold. On the other hand, maintaining a constant temperature reaching about 60⁰- 80⁰C is not very cost-effective, hence the need for a gasification boiler with a buffer (water tank). This will allow you to maintain a constant and high temperature, this is ensured by the exchange of water between the boiler and the tank. You can also choose a storage tank to accumulate heat. Most manufacturers recommend that the water temperature in the boiler should not be lower than 65⁰C..
About 70% of the heat that is generated when burning wood comes from the resulting volatile matter. Wood gasification boilers are devices that allow you to make the best use of the energy that is stored in biomass (wood). Stoves are produced in a wide range of power - about 20-80 kW. The maximum length of wood to be burned can be up to 100 cm.