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Wood Gasification Boilers “The New Irish Opportunity”
Wood Gasification Boilers “The New Irish Opportunity” Presented by:Ltd Evergreen Energy Ned Gaynor, Evergreen Energy Ltd Wood Gasification – The Offical Definition Phase Temperature Intermediate Prod. Product Chain Final Product Wood - Fresh ( 100 – 150 °C ) Drying Process (Primary Chamber) De-Gassing Water Vapour Wood - Dry + Primary Air Fuel Phase Homogenous Oxidation Of Exothermic Reaction ( 150 - 500 °C ) + Secondary Air Carbonized Gas Exhuast (500 - 1200 °C ) Charcoal + Primary Air Fuel Phase Endothermic Reaction ( 500 °C ) Ashes Evergreen Energy Ltd Carbonized Gas + Secondary Air Exhaust (800°C ) Wood Gasification – In English The conversion of wood fuel into a flammable gas that can be used as a fuel to provide Energy in different forms -Heat in a boiler -Electricity using a generator -Transport using an internal combustion engine Heat using a wood gasification boiler -Flammable gas produced at 400°C -Gas is re-burnt at 1200°C -Energy heats water -Water heats radiators/underfloor Evergreen Energy Ltd Gasification in an open fire? Uncontrolled primary and secondary air Minimal amount of gasification Flammable gases lost to chimney Approx 85% Heat Losses to Chimney Very low efficiency levels Lots of ash and charcoal Secondary Air Approx 15% Radiant & Convection Heat to Room Evergreen Energy Ltd Primary Air Gasification in a stove? Manual control of primary & secondary air Gasification occurs at top of stove Medium level of gasification occurs Inefficient heat exchanging Reduced ash & charcoal Secondary Air Approx 55% Radiant & Convection Heat to Room Primary Air Evergreen Energy Ltd Approx 45% Heat Losses to Chimney Wood Gasification Boiler 1. Boiler start-up procedure 2. Fill logs into burning chamber 3. Ignition and initial burning phase 4. Gasification phase Evergreen Energy Ltd Gasification is Different to Slow Burning Wood Gasification Boiler Slow Burning Wood Boiler Forced draft Automatic primary/secondary air valves Flue gas monitoring Fast hot burn (1200°C) No tar or charcoal build up Twin burning chambers Accumulator tank required Single fill of wood per day Timed heating zones Uses approx. 40% less wood Natural draft Manual primary/secondary air valves No monitoring Slow cool burn (800°C) Tar/charcoal build up Single burning chamber No accumulator tank required Must burn when heating is required No timers possible Uses more wood Evergreen Energy Ltd The Argument for Woody Biomass Uncoupling of agri/forestry land for energy crops - approx. 110m hectares in EU27 25 Exajoules per annum from wood or miscanthus for home heat production. Equates to 1/3 of the ENTIRE energy consumption for EU-27 states Growing oil crops for transport sector on same land only produces 1/7 of energy needs Therfore - attractive, convenient and efficient wood heating systems are required in order to encourage the correct use of biofuels ONCE MORE - Using agricultural land to provide for home heating, is 2.5 times better than using the same land to produce liquid bio fuel from rapeseed or corn to power our cars Evergreen Energy Ltd Yearly CO2 Emissions for a 35kW Boiler 5.2 t 2.2 t 1.3 t 0.98 t 0.10 t Co l l C oa w n i g Oack Bro n i s t Bl Ga Hea S l S ra e MA atu om O N H BI Evergreen Energy Ltd al Fuel Energy Contents 12 Fuel Type Energy Cont. Per Unit Home Heating Oil 10,00 kWh/l Natural Gas 9,52 kWh/m³ Coal 8,06 kWh/kg Pellets 4,90 kWh/kg Logs Hardwood (H2O = 15%) 4,42 kWh/kg Logs Softwood (H2O = 15%) 4,07 kWh/kg 10 10 9.52 8.06 8 6 4.9 4.42 4.07 4 2 0 Heating Oil Natural Gas [kWh/l] [kWh/m³] Coal [kWh/kg] Pellets [kWh/kg] Softwood [kWh/kg] Hardwood [kWh/kg] 1lt Oil approx. 2.5 kg Wood Chip 1lt Oil approx. 2.0 kg Wood Pellet 1000lt Oil approx. 2.26 tonnes hardwood 1000lt Oil approx. 2.46 tonnes softwood 1000lt Oil approx.10 – 15 M3 Wood Chips Evergreen Energy Ltd So………………. What opportunities does gasification present in Ireland?? Evergreen Energy Ltd Wood Log Gasification Boilers For the Home Owner Home heating using a fuel that has the lowest fossil fuel input of any biomass fuel A carbon neutral home heating fuel Local and sustainable supply of home heating fuel Dramatic savings on home heating costs A convenient heating system that can be setup to run with timers and room thermostats A highly efficient boiler system that uses up to 40% less wood than a standard slow burning boiler or multi fuel stove. Evergreen Energy Ltd Wood Log Gasification Boilers For Wood Suppliers An unexploited local market for high quality split logs Logs cut to 500mm and split to 200mm mean less handling and lower cots for the producer Lower costs mean that price breaks can be offered to bulk customers Gasification boilers will automatically adjust the burning process to suit the quality of wood, this means reduced drying times – felled in March, dried during Summer, start burning in October A typical gasification boiler owner will use approx 5 tonnes of split logs per year (equivalent 6 – 7 m of wood) – based on an average sized house with average heating demands. Evergreen Energy Ltd What About the Money?? 30kW Split Log Gasification Boiler €7,980 1650L buffer tank and insulation €1,700 Return Riser, Pipes, Fittings, etc €1,150 Chimney Flues (3 meters high) €550 Delivery, Installation €500 VAT €1,600 Total €13,480 Evergreen Energy Ltd That’s a Lot of Money!!! Average House Using 3000L Oil @ €0.95 per L €2,850 Equivalent Amount of Wood for Same Heat is approx 6.7 tonnes Buying Wood as Split Logs Donegal @ €46 per M3 of split wood €385 Savings per annum €2,465 Payback period 5.46 Years Waterford @ €75 per M3 of split wood €627 Savings per annum €2,223 Payback period 6.0 Years Cork @ €84 per M3 of split wood €703 Savings per annum €2,147 Payback period 6.3 Years Evergreen Energy Ltd That’s a Lot of Money!!! Average House Using 3000L Oil @ €0.95 per L €2,850 Equivalent Amount of Wood for Same Heat is approx 5.5 tonnes Buying Wood Un-split Collite 40 M3 @ €20 per M3 of thinnings €800 Cost of Fuel For Chainsaw And Log Splitter €100 Approx quantity when split 80 M3 Cost per M3 of Split Wood €11.25 Approx cost per year @ 8.37 M3 per year €94.16 Savings per annum €2,755 Payback period 4.9 Years Evergreen Energy Ltd That’s a Lot of Money!!! Average House Using 3000L Oil @ €0.95 per L €2,850 Equivalent Amount of Wood for Same Heat is approx 5.5 tonnes Using Home Grown Wood Nominal cost of wood per M3 €5 Cost of Fuel For Chainsaw And Log Splitter €1.25 Sweat and blood Lots of it Cost per M3 of Split Wood €6.25 Approx cost per year @ 8.37 M3 per year €52.31 Savings per annum €2,797 Payback period 4.8 Years Evergreen Energy Ltd Who Makes These Boilers? ETA SH Split log gasification boiler KOB Pyromat Eco gasification boiler KWB Classicfire gasification boiler Fröling FHG Turbo Eco gasification boiler Guntamatic Synchro gasification boiler Evergreen Energy Ltd Time for Some Shameless Advertising Boilers Are the Best!!! Evergreen Energy Ltd
