The wood heating has already made comeback for a few years now. This is not surprising given that it is an economical and ecological solution. High-performance wood-burning heating systems are available in a wide range of models, from stoves to boilers. Such is the case with the wood-fired boiler.
Wood: a fuel with many qualities
The firewood is a very advantageous fuel since its use and its acquisition will pose you no problem. In addition to its natural and ecological appearance, it can achieve significant savings. Indeed, it costs less than any other energy source such as gas, fuel oil or electricity. In addition, it can be in various forms: wood-logs, wood pellets, forest chips and shredded wood.
How does a wood boiler work?
The operating principle of a wood-fired boiler remains the same, regardless of the fuel used. Thus, burning wood produces energy that is used to produce hot water for housing purposes. On the one hand, there is the hot water of your heating network that feeds the radiators of your home or your floor heating. On the other hand, it contributes to the production of domestic hot water for the needs of the bathroom and the kitchen.
What are the different types of wood boiler?
There are three models of wood-fired boilers: the wood-log boiler, the pellet boiler and the shredded wood boiler Australia.
In the first place, the log boiler is the most affordable model. Small volume, it is very easy to use. For its performance, it can reach up to 85%.
Secondly, the pellet boiler is the most efficient model with a thermal efficiency between 85 and 95%. Moreover, it is very quiet equipment that offers a comfort of use of the most pleasant. This installation also has a very long autonomy which can be up to several months. Like the pellet stove, it is equipped with a tank that ensures its automatic feeding.
Finally, the boiler with shredded wood or with wood chips also offers a very exceptional yield which can be between 75 and 90%. Like the pellet boiler, it incorporates a silo for a better autonomy.
Some information about choosing firewood
The performance of your heating appliance depends very much on the characteristics of the fuel you are using. Use the following tips to choose your wood.
Wood species are classified into two major families according to their density:
- Hardwoods (oak, beech, ash, chestnut, charm, walnut, fruit trees, etc.)
- Coniferous and softwoods (spruce, fir, pine, larch, poplar, willow, etc.)
Hardwood hardwoods are the most popular for domestic heating, with the exception of the chestnut tree which bursts on burning. Soft and resinous hardwoods burn faster! If they are poorly stored, they degrade rapidly. Softwoods are nevertheless appreciated for their rapid rise in temperature.
Wet wood burning is not recommended for various reasons:
- Environmental issues: the burning of “green” wood releases many pollutants;
- Economic: a damp wood provides about half as much energy as a dried wood;
- Practical: high-performance appliances will not reach their rated power with fresh wood. The material will get dirty faster and may deteriorate.