| Boiler: | Gilles HPK-RA 70kW |
| Output: | 70kW |
| Fuel: | G50, W30 Woodchip, locally sourced |
| Fuel Storage: | Converted grain store with 5.0m sweep collector |
| Fuel Storage capacity: | 100m3 |
| Annual Heat Load: | 147MWh per year |
| Annual Fuel Requirement: | 42 tonnes (G50, W30 Woodchip) |
| CO2 Saving: | 39 tonnes per year |
| Features: | Automatic ignition, heat exchanger cleaning, ash removal |
| This Gilles woodchip boiler has been installed to provide heating and hot water to one domestic property, an office building and a swimming pool heated during the summer months only. In order to make use of existing buildings and fit into the current yard the boiler has been installed into a garage, positioned so that cars can still be safely parked.
The woodchip is stored in a disused general store. Access to this building is such that bulk deliveries up to around 30 tonnes at a time can be accepted. The woodchip is then pushed up onto the 5m sweep collector around once every 6 weeks during the heating season. This means that woodchip can be delivered in bulk without any effect on the properties being heated.
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| The woodchip store: the sweep collector which automatically feeds the woodchip boiler is normally hidden under the heap of chip | The plate heat exchanger connects the existing heating systems to the new district mains. | The Gilles HPK-RA 70kW boiler that heats the three units. |
| HEAT METERING
The heat energy transferred from the district mains to each heat load will be monitored using Kamstrup heat meters. These will record the energy transferred, in kWh, allowing tenants to be billed for heat energy used. REMOTE ACCESS SOFTWARE The system is linked to the house through a data network, enabling the system user to view boiler performance from a PC. In addition, the boiler control panel includes a dial up modem which is connected to a dedicated phone line. This allows Energy Innovations to remotely access the system in order to provide assistance to the boiler users or, if necessary, to alter any operational parameters to maintain efficiency and reliability. WOODCHIP FUEL The 70kW Gilles boiler is run on woodchip sourced from woodland on the farm. As alternatives, shredded wood from recycled pallets and waste wood, rape meal pellets and miscanthus pellets can be used. The system is expected to use around 42 tonnes per year of woodchip. CARBON SAVINGS Locally sourced woodchip, from sustainable managed woodland is a low carbon fuel. Provided there is no net depletion of the woodland, the growing trees effectively offset the CO2 given off during combustion. The oil fired boilers displaced by this woodfuel installation would have emitted some 39 tonnes per year of CO2. |