Mawera - Model FU RIA Series - Firebox Boiler - Brochure

MAWERA HolzfeuerungsanlagenGesellschaft mbHA 6971 Hard am BodenseeNeulandstraße 30T +43 - (0)5574 - 74 301-0F +43 - (0)5574 - 74 301-20info@mawera.comwww.mawera.comMAWERAKessel & Maschinenbau GmbHD 88131 LindauRobert-Bosch-Straße 15T +49 - (0)8382 - 977 012F +49 - (0)8382 - 977 013info@mawera.comwww.mawera.comMAWERA (Canada) Ltd.104 Sixth Street East, P.O. Box 2716Revelstoke, BCV0E 2S0 CanadaP +1 (250) 814 - 7184F +1 (250) 837 - 5556info@mawera.cawww.mawera.ca Typ Capacity* FU 110 RIA 28 - 110 kW 0.10 - 0.37 MBTU/h 2.537mm 1.230mm 2.600mm FU 140 RIA 35 - 140 kW 0.12 - 0.48 MBTU/h FU 180 RIA 45 - 180 kW 0.15 - 0.61 MBTU/h 2.537mm 1.230mm 2.600mm FU 220 RIA 55 - 220 kW 0.19 - 0.75 MBTU/h 3.014mm 1.340mm 2.930mm FU 280 RIA 70 - 280 kW 0.24 - 0.96 MBTU/h 3.180mm 1.340mm 2.930mm FU 350 RIA 90 - 350 kW 0.31 - 1.20 MBTU/h 3.057mm 1.468mm 3.150mm FU 440 RIA 110 - 440 kW 0.38 - 1.50 MBTU/h 3.058mm 1.568mm 3.270mm FU 550 RIA 140 - 550 kW 0.48 - 1.88 MBTU/h 3.180mm 1.678mm 3.690mm FU 700 RIA 175 - 700 kW 0.60 - 2.39 MBTU/h 3.966mm 1.789mm 3.890mm FU 850 RIA 215 - 850 kW 0.73 - 2.90 MBTU/hFacts and Figures: MAWERA Firebox Boiler with Double Grate Underfeed Stoker, Product Line FU RIAProduct information MAWERA Firebox Boiler with a Double Grate Underfeed StokerFU RIA Series0.37 to 2.9 MBTU/h (110 to 850kW)Design and Operation This MAWERA underfeed stoker series is the result of many years of experience in developing and designing fireboxes. Its modular set-up and thought-out design allows us serial producing the units in our own workshop according to high quality standards. The firebox is equipped with a double grate, each of them having a separate primary air supply. This feature guaran-tees that a wide range of biomass fuels can be burned. End users range from the primary wood processing in-dustry, to reman plants, but also district heating of public buildings or residential complexes. The unit employs a special design for completely automa-ted combustion of try and moist wood particles and woodchips. For fuel with a high nitrogen content the combus-tion chamber is also available with a Low-NOx Reduction technology. The stoker feeds the fully refractory lined combustion chamber from underneath. A hermetically insulated Three-pass flame tube boiler sits on top of the firebox. Wood fuel is discharged from bunkers or silos using MAWERA’s hydraulic push rams or MAWERA’s silo di-scharge system, respectively. Depending on architectural constrains and the particle size of the fuel, push rods, chain conveyors or tube screw augers can be used to convey the fuel. Ident. no. 33.00 - 33.10 Boiler model: Standard boiler with 230°F (110°C) outlet temperature and 58 PSI (4 bar) operational pressure; the boiler can also be built for a higher operational pressure, a higher outlet temperature and with an individual certification by the German Technical Inspection Agency (German TUEV) or ASME (USA and Canada). Option: Combustion chamber with low NOx technology The following wood fuel may be used: lumber and sawmill by products trims, cut-offs, planer shavings, saw dust, sander dust, fines, particle boards, MDFs (medium density fiberboard). Fuel moisture content: 10% to 50% m.c. (wet basis) Fuel grade: particle size from 7/16’’ to 4’’ (11.2 to 100 mm) conveyed by a screw* heat output depends on the type of fuel used, particularly its moisture contentMAWERA Double Grate Underfeed Stoker Typ FU 440 RIA with automatic De-ashing SystemMAWERA (UK) Limited 31 Enterprise Ind. Est. Britannia Way LICHFIELD Staffordshire WS 14 9UY P +44 - (0)1543 - 25 88 44 F +44 - (0)1543 - 41 63 11 info@mawera.comwww.mawera.comMAWERA Fire Box Boiler FU RIA with Double Grate Underfeed Stoker - Design and OperationMain Features:l resting firebed yields significantly lower emissionsl flame temperature control with integrated, adaptive O2 control l built-in emergency heat ex- changer allows quick operational changes; meets DIN 4751 part 2 (German industrial standard)The proven micro-processor control MAWERA Logic 300 with a touch screen controls the entire system. In addition, a modem for remote mainte-nance, a human-machine interface (“MAVIS”) and a tele-emergency alert system are available. Combustion chamber design - unique multi-sectional insulation and high quality brick refractory liningl high efficiency: up to 91%l three-pass flame tube boiler with flue gas temperatures below 374°F (190°C) at full-loadl heat output can be gradually varied between 25% to 100% of the rated capacity; low emissions even at partial loadl The unit requires the lowest attention possible l The combustion chamber features high quality, insulating refractory, and an optimized combustion air supply that guarantee complete combustion of a wide variety of wood fuel at the high est possible conversion efficiency l minimal radiation losses through complete insulation of the entire boiler unitSoot blower for cleaning heat exchanger (optional)Three-pass flame tube boiler - back-up oil burner to swivel into the firebox (optional)High quality, robust, heavy duty screw augerScrew pivots around a universal joint on one end there-by allowing the screw to avoid oversize pieces inside the pipe housingOptional - de-ashing into an ash container; directly or via screw