WOOD GASIFICATION BOILERS:
Wood is a convenient source of energy, which can be harvested when needed and is easily stored. If you have your own seasoned timber with low moisture, then what better, more efficient, way to put it to good use than for heating your home with a wood gasification boiler. It is important to remember that the moisture content in your wood should be below 20% to ensure highest efficiencies.
Our choice of wood gasification boilers
WOOD GASIFICATION – How it works:
Simply put the wood is burned and the gases which are created are heated again (secondary combustion) to create energy to heat the boiler.
The Principle: Gasification is a method of extracting energy from organic materials such as wood. The process converts the wood into carbon monoxide and hydrogen by reacting the raw material at high temperatures with a controlled amount of oxygen and/or steam. The resulting gas mixture synthesis gas or syngas is then more efficient than direct combustion of the original fuel because it can be combusted at higher temperatures. Gasification itself and subsequent processing neither directly emits nor traps greenhouse gasses such as carbon dioxide.
Components of a boiler 1.Control unit 2.Fuel chamber door 3.Forced draught fan 4.Bottom door 5.Fuel chamber 6.Primary air duct 7.Ceramic nozzle with secondary air duct 8.Combustion chamber 9.Ash chamber 10.Exhaust gas heat exchanger with turbulators 11.Damper 12.Safety heat exchanger 13.Supply line 14.Return line 15.Chimney neck
Operation of a SOLARBAYER Boiler: For heating up, the boiler is equipped with a heating damper which is operated with a connecting rod at the front side of the boiler. The interior of the boiler consists of a fuel chamber where the fuel is dried out and turned to gas. The wood-gas produced will then be lead into the combustion chamber via a nozzle. There it starts burning by adding secondary air. The hot waste gases are cooled down in the heat exchanger.
Please note that the installation of a buffer tank is recommended as part of the system, which we can do for your. For details about buffer tanks, please see our buffer tank section.
What size boiler?
In order to calculate the correct size of the boiler for your home, you must take account of several factors, including:
- each rooms dimensions (LxBxH)
- pitch of the roof
- materials used in the house, such as whether it’s timber-frame or brick built, floor and roof type, the windows whether they are pvc/wood or metal, the type of insulation used.
- area of windows
All of these combined to calculate the heat loss of the dwelling, which gives you the kilowatts of the boiler.
However, an old simple rule of thumb may help to give an idea. It takes 50 watts to heat every square metre of a domestic building, and add 3 kilowatts for domestic water. (This is based on the assumption of good insulation). But don’t worry too much about this as we can visit your home and take all the measurements needed to recommend the right sized boiler for your needs.