Rural, Community-run, Infants’ School
>50 kW Wood Pellet Fired Boiler for Space Heating
Ecolyf was responsible for supply and installation of the pellet-fired boiler system. An ageing, 75 kW, oil-fired boiler was removed from the school building. A new, small Boiler House and Fuel Store were erected close to the school in order to house a Gercross 50 kW, pellet-fired boiler, an indoor pellet silo and an automated, vacuum-driven, pellet-transfer system to feed the boiler. Heat is delivered to the school for space heating via an underground, pre-insulated heat main. Improvements were made to the heat-distribution system within the school. Thermostatic radiator valves (TRVs) were also fitted to a range of elderly, cast-iron radiators to improve control of air temperatures within the classrooms. The school benefits from a significant solar gain on sunny afternoons.
Fuel supply costs have been reduced by about 1/3, by changing from heating-oil to wood pellet fuel. Unit-cost of useful heat from delivered heating-oil can be up to 7.0 p/kWh whereas unit-cost of useful heat from delivered pellet fuel is about 4.7 p/kWh.
The school received grant assistance to establish heat from wood for space heating. It is committed to supporting sustainable development and wished to reduce its contribution to environmental impacts from the extraction, transport and use of fossil fuels.