subject: Wood pellets: The fuel of the future [print this page] What are wood pellets? What are wood pellets?
Pellets are small cylinders produced with natural wood processing waste (chips, sawdust, etc..) Having a length from 5 to 40 mm and a diameter of 4-10 mm. They are subjected to strong compression causes that maintain their shape and can be easily transported in tankers. Their calorific value is approximately 4.9 kWh / kg, the energy value of one kilogram of pellets is roughly equivalent to half a liter of heating oil or cubic feet of methane.
Blocks to prevent the boiler, use only quality pellets
Quality is also important for the pellets. The advice is to use only materials certified according to DIN, the German -Norm or standard DINplus, introduced in 2002 in Austria and Germany to guarantee superior quality products.
Pellets certificates contain no binders or synthetic chemical impurities (glues, paints, plastics), these are fairly limited residual moisture (10-12%) and a small fraction of dust.
The poor quality pellets have a lower yield, and then they raise the heating costs, leave more ash and, in extreme cases can cause blocking of the boiler. So to heat without problems it is best to choose pellet quality guaranteed.
Employment opportunities
Pellets are fed automatic centralized, used for heating both the water environments. The pellet modern facilities offer the same comfort as diesel or natural gas. The only additional steps they need compared to traditional systems, is emptying the container of ashes.
Pellets can also be used to power autonomous systems (boilers for individual apartments), fireplaces and stoves jars.
Method of use
In centralized systems, the pellets are conveyed from the place of storage to the boiler through a vacuum cleaner or a screw conveyor. The material can be stored in the boiler room or in a separate compartment, accessible directly dall'autocisterna transport.The pellet plant can easily be combined with solar energy systems.
Economic advantage
The wood pellets are a viable alternative to fossil fuels from the point of view, despite the cost of a pellet plant is slightly higher than diesel.The price of pellets varies depending on the season and the dealer, so it is best to ask before buying various offerings also include information about additional costs for transportation and the like.
Pellets are sold in convenient bags found at the supermarket, but they cost a bit more than bulk.
