Using a Pellet Stove to Heat Your Home
The right pellet stove for your home
- There a two types of pellet stoves:
- Single pellet stoves with an output of 6-8 kW are designed to heat individual rooms and are placed in a room like a regular wood-burning stove. The fire chamber is automatically supplied with wood pellets from a storage chamber, which must be refilled by hand in regular intervals.
- Central pellet heating systems with an output of up to 30 kW can heat one or two family homes. This type of pellet stove is supplied with wood pellets from the storage chamber by air pressure or a screw conveyor. The system using an air pressure feed allows for both units to be located up to 20 meters apart and on different levels of the building. With the screw conveyer system the pellet stove and storage room must be located next to each other.
“Pellet heating systems can be used in larger buildings by connecting several ovens, thus generating several hundred kW.”
Wood pellets are CO2 neutral and widely available.
Wood pellets are are made from dry sawdust and wood shavings. They are compacted into cylindrical shapes under high pressure.
While fossil fuel deposits exist only in a few countries, wood grows almost everywhere. It is a renewable resource that is climate neutral when burnt. This means that when wood is burnt, it releases only as much CO2 as it had absorbed while the tree was growing. Another advantage is that pellets do not need to be mined but are a by-product of wood processing. Where a local supply is possible, long transportation needs are reduced. Wood pellets for heating are 30 percent cheaper than oil and produce 13 to 15 times less CO2 emissions for an equivalent amount of heat. The price for wood pellets is largely unaffected by gas and oil prices that will increase as these resources become scarcer.
Pellet heating systems reach an efficiency of over 90% and ensure a sustainable and economical use of the renewable resource wood.
Compared to processing natural gas or oil the energy required for the production of pellets made from dry sawdust and wood shavings is low. The energy required to produce pellets is only 2.7% of the energy delivered by the pellet stove, compared to 10% for natural gas and 12% for oil.