The common interpretation of a wood stove, is a log stove. Combustion logs as a source of heat in a living room or open plan living space has been done for hundreds even thousands of years. On the other hand, for many years the humble log stove has been seen more as another heat source for one room or even a style alternative, rather than a complete solution to home heating. There are quite a few reasons for this, firstly a log stove is a lot of work for people with a busy modern behavior. The stove will also not generate a lot of useable heat, it may create the living room very warm, but the rest of the property will not benefit from the temperature. A modern biomass stove which can meet the users demands must generate more useable temperature as well as at the same time be low maintenance. However wood logs are the predominant interpretation of biomass, there are many other forms of biomass which can also be used as biomass fuel. Biomass simply refers to any form of untreated material which can be used as a fuel source. This includes biomass logs, but also biomass chips along with sawdust from biomass processing operations. There are other sources of biomass such as agricultural waste such as grass in addition to other waste from food construction. This wood supply is particularly under utilized in addition to has very little value. Most wood resources yet cannot be used as fuel in their raw form. Proficient incineration is down to fuel density as well as energy moisture content. To process biomass into the most proficient form of solid energy, the most practical process is to upgrade the wood into pellets. Pellets have a much higher density, plus also have a low moisture content, producing more temperature.
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The properties of pellets mean they flow well through feed hoppers plus can light quite easily plus quickly. This means that pellets can easily be used in automatic and sophisticated heating systems. Wood burners therefore can be restricted via a thermostat the same as any other oil or gas heating system. When the thermostat demands more heat the auger system on the biomass stove will feed more pellets into the fire. If the fire is not lit, then a hot rod igniter will start the fire by means of a higher fan speed. Once the fire is lit the fan speed will lower to achieve the correct incineration temperature to maximise heat generated while keeping fuel consumption to a minimum. It is these features which makes biomass pellet stoves more of a realistic full heating solution.
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The biomass stove can be used to provide temperature for a single room, or by way of a boiler can be used to feed into your existing central heating system. The amount of maintenance required for the pellet stove will depend the features included along with the size of the energy hopper. Generally the size of pellet fuel hopper on the biomass stove will hold adequate energy for at least a day, which is already much greater than a log stove, which will call for fuel loading several times a day. However some biomass pellet stoves can have fuel hopper extensions so the stove can run for a week or even more than a few weeks without the need to refuel. To minimise energy loading, it is potential to link a biomass stove by an large external fuel hopper which will feed the smaller hopper on the stove. The large external hopper can hold up to year worth of fuel, plus be loaded by means of a pellet fuel tanker which blows in pellets.
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