What is biomass anyway?
Biomass is a term usually used to refer to fuels mostly derived from plant material but occasionally from animal material. It is almost always a carbon neutral form of energy so there is no “net” increase in greenhouse gasses. Fuels like biodiesel, ethanol, and methane are considered biomass. But one of the most promising biomass fuels is… … Wood Pellets
For more on this – please visit…: Alternative Energy News
Another good one is makingpellets.com; see also LINK for video.
This one is a favourite of mine it uses grass to make the pellets. Obviously it means one has to have a diesel-powered unit to do this (at present time) but there must be someone in Europe with such a unit for sale. (Anyone know??)
Wood Pellets (SEI) LINK
Video on making pellets from sawdust.
Wood-chip ..WOOD chip can deliver heat and electricity for approximately one-third the price of oil. Everyone knows this, and everyone also knows that Ireland is awash with wood chip. Why then are we doing so little to utilise this cheap, home-grown fuel and cut back on our dependence on oil? LINK
How to Make Wood Pellets
As people are looking for affordable and renewable forms of energy, wood pellets can be a viable source of energy for home heating. If you know how to make your own pellets it can be make even more sense to burn pellets if you have access to enough raw material.
Pellets can be made from wood waste and also from other agricultural waste products like straw, grass clippings, corn stalks and other forms of biomass. With small scale portable pellet making machines now available, it’s not hard to make pellets but to make quality pellets but to get quality pellets that are not going to just crumble into powder you will need the right knowledge.
The first step in making pellets is to reduce the size of your material so that it is small enough to fit into the dies in your machine. This can be done with a chipper or a hammer mill or in some materials such as sawdust it may already be small enough.
Then it will need to be dried until it’s moisture content is at around 10-20% and ideally 15%. Some pellet making machines have dryers built in. Usually the most economical way to produce the heat to dry the material is by burning some of the pellets that it produces.
Once the material is dry you will have to decide if you will need to add a binding material. Some materials such as softwoods naturally contain enough lignin to bind the pellets together so you will not need to add a binder.
Now a roller will roll across the material and press it into a round die with a funnel shaped top that tapers down to a the size of the pellets you want. This compresses the wood and also generates heat. The heat melts the binding material that will hold the pellet together after it cools.
Now that the pellets are formed they will need to be cooled. The most simple way to cool them is to spread them out and let them cool naturally.
This is the basic process of how to make wood pellets. If you want to make your own pellets you will need to learn more of the in depth details involved. There are different types of machines so before you choose one you will need to know the advantages and disadvantages of the different types. Simple factors such as the type of metal that the dies are made from can greatly affect the amount of maintenance the machine will require.
Here is a more in depth guide that will teach you how to make wood pellets and how to select a wood pellet making machine that will be best for your needs.
Read more: http://www.articlesbase.com/home-improvement-articles/how-to-make-wood-pellets-868193.html#ixzz0s5E870fM
Under Creative Commons License: Attribution; Michael Wilson – About the Author:http://firewoodresource.com
Excellent article on the hows and whys of pellet-making.