It is an effective way of using biomass energy that we applied biomass fuel to the fuel of boiler, and biomass boiler has been rapidly developed in our country in recent years. Energy solutions based on biomass and bio-fuels provide clean and renewable energy for large national and international companies. ZG as a leading boiler manufacturer in China, we are dedicated to the research of biomass boiler.
Biomass boiler introduction
For domestic heating purposes the main biomass fuel is wood in the form of logs, pellets or wood chips – although there are boilers available that burn a range of cereals. The full range of biomass fuels also include animal, food and industrial waste and high energy crops such as miscanthus, willow, rape and maize. Smaller 4 ton biomass boiler can be used just for room heating, with a back boiler to heat the water, or to produce hot water and heating for the whole house.
Unlike most renewable energy technologies where there is an upfront investment, then the element that provides the power (ie wind or sun) is free, there is an ongoing fuel cost with biomass heating.
Biomass boiler working principle
More efficient still are automatic pellet stoves which operate at 85 to 90 per cent efficiency. They spread the heat through convection, rather than traditional radiation, which means the room is heated more evenly and efficiently using a fan. They are clean and easy to use, with automatic ignition and a thermostatic control. They have an integrated hopper, which automatically tops up the fuel. They generally hold enough fuel for one to three days operation. The ash pan needs to be emptied about once a month. It is also possible to add a back boiler to these.
Biomass boiler suitable fuel
All wood fuels boiler need more storage space than fossil fuels (oil or LPG). The three types of fuel most commonly used are logs, wood chips and wood pellets. Of these, the latter two can be used in automated systems and stored in a hopper. Logs must be manually fed into the biomass boiler and they are less automated, so their efficiency is more dependent on human input. If the wood isn’t adequately seasoned or contains too much moisture, or if the air supply is reduced too early, they will not burn as well and will create smoke and tar.