Wood Gasification Boilers “The New Irish Opportunity” Gasification Boilers “The New Irish...

Evergreen Energy Ltd

Wood Gasification Boilers “The New Irish Opportunity”

Presented by: Ned Gaynor, Evergreen Energy Ltd


Wood Gasification – The Offical DefinitionPhase Product Chain Temperature

Intermediate Prod.Final Product

De-Gassing Wood - Dry

Ashes

Charcoal

Drying Process (Primary Chamber)

Wood - Fresh( 100 – 150 °C )

Water Vapour

Fuel PhaseHomogenous OxidationOf Exothermic Reaction

+ Primary Air

( 150 - 500 °C )

+ Secondary Air

(500 - 1200 °C )ExhuastCarbonized

Gas

Fuel PhaseEndothermic Reaction

+ Primary Air

( 500 °C )

+ Secondary Air

(800°C )ExhaustCarbonized

Gas


Wood Gasification – In EnglishThe 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


Gasification in an open fire?

Primary Air

Secondary AirApprox 15%Radiant & ConvectionHeat to Room

Approx 85%Heat Losses to Chimney

Uncontrolled primary and secondary air

Minimal amount of gasification

Flammable gases lost to chimney

Very low efficiency levels

Lots of ash and charcoal


Gasification in a stove?

Primary Air

Secondary AirApprox 55%Radiant & ConvectionHeat to Room

Approx 45%Heat Losses to Chimney

Manual control of primary & secondary air

Gasification occurs at top of stove

Medium level of gasification occurs

Inefficient heat exchanging

Reduced ash & charcoal


Wood Gasification Boiler

1. Boiler start-up procedure

2. Fill logs into burning chamber

3. Ignition and initial burning phase

4. Gasification phase


Gasification is Different to Slow Burning

Forced draft Natural draftAutomatic primary/secondary air valves Manual primary/secondary air valvesFlue gas monitoring No monitoringFast hot burn (1200°C) Slow cool burn (800°C)No tar or charcoal build up Tar/charcoal build up

Slow Burning Wood Boiler

Twin burning chambers Single burning chamberAccumulator tank required No accumulator tank requiredSingle fill of wood per day Must burn when heating is requiredTimed heating zones No timers possibleUses approx. 40% less wood Uses more wood

Wood Gasification Boiler


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


Yearly CO2 Emissions for a 35kW Boiler

Brown Coal

5.2 t

Black Coal

2.2 t

Home Heating Oil

1.3 t

Natural Gas

0.98 t

BIOMASS

0.10 t


10 9.52

8.06

4.9 4.42 4.07

0

2

4

6

8

10

12

Heating Oil[kWh/l]

Natural Gas[kWh/m³]

Coal[kWh/kg]

Pellets[kWh/kg]

Softwood[kWh/kg]

Hardwood[kWh/kg]

Fuel Energy Contents

1000lt Oil approx. 2.26 tonnes hardwood1000lt Oil approx. 2.46 tonnes softwood1000lt Oil approx.10 – 15 M3 Wood Chips

1lt Oil approx. 2.5 kg Wood Chip1lt Oil approx. 2.0 kg Wood Pellet

Fuel Type Energy Cont.Per Unit

Home Heating Oil 10,00 kWh/lNatural Gas 9,52 kWh/m³Coal 8,06 kWh/kg

Pellets 4,90 kWh/kgLogs Hardwood (H2O = 15%) 4,42 kWh/kg

Logs Softwood (H2O = 15%) 4,07 kWh/kg


So……………….

What opportunities does gasificationpresent in Ireland??


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 highly efficient boiler system that uses up to 40% less wood than a standard slow burning boiler or multi fuel stove.

Local and sustainable supply of home heating fuel

A convenient heating system that can be setup to run with timers and room thermostats

A carbon neutral home heating fuel

Dramatic savings on home heating costs


Wood Log Gasification Boilers -For Wood Suppliers

An unexploited local market for high quality split logs

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

Logs cut to 500mm and split to 200mm mean less handling and lower cots for the producer

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.

Lower costs mean that price breaks can be offered to bulk customers


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


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



Cork @ €84 per M3 of split wood €703






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






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




Who Makes These Boilers?ETA SH Split log gasification boiler

KWB Classicfire gasification boiler

KOB Pyromat Eco gasification boiler

Fröling FHG Turbo Eco gasification boiler

Guntamatic Synchro gasification boiler


Time for Some Shameless Advertising

Boilers Are the Best!!!

Wood Gasification Boilers “The New Irish Opportunity” Gasification Boilers “The New Irish...

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