The Wood Waste Technology Water Boiler
Wood Waste Technology’s hot water boiler system burns wood waste to provide different heating solutions including; space heating to factory areas, traditional radiator heating for offices, domestic hot water and also hot water supply for manufacturing processes and machinery (drying kilns, paint lines etc.)
This automated system has been specifically designed to manage and optimise fuel usage to provide a 92.5% efficiency rating tested against BSEN303-5-2012. This allows customers to maximise the returns available through the Renewable Heat Incentive scheme (RHI) enhancing the financial benefits further, especially as the scheme and the heater are set to provide payments and last for 20 years. The boiler has recently undergone extensive emissions testing to make it available on the RHI scheme without the need for expensive ceramic or electrostatic filtration. This dramatically reducing maintenance and installation costs. Our water boiler is industry leading with the use of only primary methods to reduce the amount of NOX, CO and particulate entering the atmosphere even when burning the most difficult fuels such as melamine faced chipboard, or MDF. Even with these fuels the system managed to consistently get efficiency ratings of more than 90% showing its performance capabilities.
With exceptionally high quality design and UK based manufacturing the boiler systems are built to easily last the length of the 20 year RHI payment scheme and prolong the cost saving potential of your business for as long as possible. Wood Waste Technology Ltd take care of everything from initial site visit, project design, manufacture, right through to post commission hand over and yearly servicing. We have a dedicated team of well experienced engineers on hand who carry all spare parts for the machines to allow quick turnaround on repairs that may be needed which helps to reduce the downtime of the machine.
Oxygen and temperature and pressure sensors relay information to the user friendly touch screen PLC unit for easy control and observation in order to help ensure the boiler is operating with maximum combustion and fuel efficiency. All gearboxes, motors and fans are inverter controlled to reduce energy consumption when running at reduced loads. The ceramics are water cooled in and around the combustion and firebox area which increases the lifespan of the machine and also helps enhance the process making it work more effectively.
.
Technical Information
The Combustion Zone
- Large resident time to allow complete combustion
- Pre-cast Arched Ceramic Roof blocks reinforced with stainless needles
- Ceramic Baffles rated at 1800?c
- Pre-cast preheated combustion air holes primary and tertiary
- High Alumina Fire Bricks for floor and side walls rated at 1250?c
- Pre-cast air blocks and support lintels.
- Water Cooled walls, for increase efficiency and combustor life.
- Separated primary and secondary (three levels) combustion areas for low emissions.
- Flue gas recirculation, for lower NOx, CO and lower excess air.
The Heat Transfer
- Two pass Hot Water Heat Exchanger
- Tested to 7.5 Bar (G), working pressure 5 Bar (G) ** higher pressures possible on request.
- CE Marked PD5500 SEP or class 1 if needed.
- Water Flow Direction Baffle Plates
- Double Pass Hot Gas through horizontal Fire Tubes
- Pressure Relief Valves for safety
- Vents and drain points.
- DN80PN16 water connection flanges.
- Structural water cooling for increase efficiency and lower losses.
- Wet back (inlet is fully water cooled, rather than insulated)
- Large access door for easy cleaning and inspection
The Fuel Conveyer System
- Screw Conveyer to Combustion Zone
- Gearbox & 3 phase motor
- Variable speed on all motors
- Air lock rotary valve
- Automatic Fire Suppression System
The Control Panel consists of
- Siemens PLC controlled, HMI touch screen display
- Variable speed drive Fuel Feeding system.
- Combustion temperature regulation
- Screw Feed Fire Protection System and Safety Shunt Mechanisms
- PLC controlled Water Temperature, 30-100%
- PLC controlled Combustion Vacuum system.
- Hot Flue gas Recirculation system.
- Excess air, oxygen control
- Water Flow and return temperature
- Alarms and protection circuits.
- Time clock function for night time set back
- PLC and Inverters mounted in wall mounted control cabinet IP55.