Biomass is defined as energy produced from organicmatter. In practice it tends to be wood waste of various kinds, of which there is a considerable supply. In the UK it is estimated that six million tonnes of wood is disposed of in landfill annually. Many of the small CHP plants that power local communities are fuelled by biomass. Type of biomass include logs, wood chips and pellets mad:of
Burning wood is generally considered to be carboneutral, because the carbon released by combustion is taken in by growing trees that release oxygen as a by- roduct. However, some experts disagree, pointing out that there are energy costs associated with processing and transporting timber, and that wood smoke contains a variety of noxious substances .
You can burn biomass in stuves ,open fires and wood-fired boilers. In theory a wood-fired boiler can be dilell substituted for a conventional boiler and will work alongside an existing heating system. In practice it can bo more complicated than that. Siting the Aue can be a critic, issue. You will also need a considerable amount of space to core the fuel and keep it dry. Some wood-fired boilers can
take biomass in a range of forms; others are specifically solid fuel or pellets. You can feed the boiler directly or via hopper, which cuts down on the effort required Burning wood in open fires is the least efficient use of the fuel, as a considerable proportion of the heat produced along with the emissions, goes straight up the chim well-insulated house a wood-burning stove can be a much better option and is much less complicated to install t a biomass boiler. Modern wood-burning stoves are ve
efficient and recirculate the air to reduce emissions.
stalling floor vents above the stove will warm upstairs rooms. Leaving internal doors open will also spread the heat around. Where very high levels of insulation have been achieved, a wood-burning stove can supply almost all the supplementary space heating required -you can also coo on them. European tiled stoves store heat for a very long time – the tiling gives them a high thermal mass and makos them function like storage heaters, which results in a more even distribution of hcat. An added advantage of any kind of stove is that it provides a cosy focus for the home.
While wood-burning stoves have become a popular eco option, there can be drawbacks. In suburban areas, smoke can be a nuisance for neighbours. And although the more expensive modern stoves burnae cleanly, and some are even approved for use in smoke-firee zones, they have to be
performing at peak efficiency for emissions to be low. Using poorly seasoned or damp wood can increase the smoke output, as well as run a stove below its optimum operating temperature. A choked fire burns dirty, releasing a lot of smoke and tar that can clog up the chimney. It is important
that stoves are not over-sized, particularly in highly insulated homes. Running a large stove with the vents osed because it is producing too much heat will res an increase of smoke-the alternative, to open doors and windows to let the heat out, is clearly nonsense.