LOCAL IMPACTS OF RENEWABLE ENERGY

Luft- und Feuerungstechnik GmbHHainfelderstrasse 69

A-2564 Weissenbach/TriestingFirmenbuchnummer: FN 194342y

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HeadofficeWeissenbach/Triesting, Österreich

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CompanyPersonal

Managing partner and majority ownerLeo Schirnhofer

Department chief process engineeringDI Holger Knautz

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1965: First furnace

1972: Automation

1991: First CHP-plant

History

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2010: 450 employees and more than2500 plants worldwide

From concept to the realisation.

History

Turn-key biomass plants

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Heating

Industrial processes (steam, thermal oil)

District heating

CHP plants(steam process/ORC)

Biomass plants for:

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Local impacts of renewable energyEcologic and economic facts

• Biomass is available in almost every region

Wood grows in nearly every climate

new sources can be created with

new concepts of land use

e.g. fallow land can be used for

fast-growing energy wood

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Local impacts of renewable energyEcologic and economic facts

• Biomass is available in almost every region

Collection and distribution systems, logistics and organisation required

Alternative: Other resources for biomass to be utilised (demolition wood, energy crops, chicken manure…)

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Sunflower-husks

Pellets Sawdust Crops

Bark Strip waste Elephant-grass Corn

manure Industrial-chips Wood-chips Rice-husks

Local impacts of renewable energyFuel samples

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Local impacts of renewable energyEcologic and economic facts

• Biomass is added value

In contrast to trading (oil, gas), production of biomass fuel is real added value. The product (pellets, chips…) is of a higher class than before.

Vertical range of manufacturing can be higher than with fossil fuels (refining only!)

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Local impacts of renewable energyEcologic and economic facts

1. step: preparation (plantation and harvest)

2. step: upgrading/refining (chipping, pelletising…)

3. step: conversion (heat/el. power)

Countrymen found agricultural cooperative societies, which own and operate plants in succession.

The farmers become energy suppliers.

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Local impacts of renewable energyEcologic and economic facts

• Biomass is security of supply

Self supply possible

Security by decentralised supply

Possibility to change supplier

real open market without gambling

Independence of the world market

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Local impacts of renewable energyEcologic and economic facts

• Biomass is renewable

Very stable long-term prices

shortage not expected, little impacts of the world because of the regional source

No taxes or penalties or price changes due to CO2-certificates (risk of speculation)

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Local impacts of renewable energyEcologic and economic facts

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Local impacts of renewable energyLegal regulations

• European union

Pretends targets

- CO2 savings

- Energy policy

- Subsidies

- Guidelines

- Hamonised standards

- White papers

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Solid biofuels –Fuel specifications and classes

Local impacts of renewable energyPre-Standard CEN/TS 14961

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Local impacts of renewable energyLegal regulations

• National laws

-Emission limits

-Subsidies

-Renewable energy feed-in tariffes

-Operation of plants

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Different for every country, region, fuel and plant

Local impacts of renewable energyPollution act

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Local impacts of renewable energyBiomass utilisation

• Heating plants

- one-family home up to district heating plants

- (10) 500 – 10.000 kW boiler capacity

- one, two or multiple boilers

- combination with gas or oil boilers (safety, reserve, peak load)

- various fuels (wood chips, pellets, manure, energy crops…) possible

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Local impacts of renewable energy3.000 kW Single boiler plant

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Local impacts of renewable energyBiomass utilisation

• Cogeneration plants

-For medium to big district heating networks

-ORC technology

-Steam process with backpressure turbine

-Steam process with extraction/condensation turbine

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Local impacts of renewable energyBiomass utilisation

• ORC plants

- appr. 1.400 – 10.000 kW heating capacity

(appr. 300 – 2.200 kWel)

- high base load (process heat)

- combination with WW-boiler and gas boiler possible

- various fuels possible

- easy to operate

- high part load efficiency

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Local impacts of renewable energyBiomass utilisation

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Local impacts of renewable energyBiomass utilisation

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Local impacts of renewable energyBiomass utilisation

Thermooil system acc. to DIN 4754

ORC module

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Local impacts of renewable energy3.500 kW/550 kWel ORC plant

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Local impacts of renewable energyBiomass utilisation

• steam process

- with backpressure or extraction/condensation turbine (depending on heat load curve)

- 2.000 – 10.000 kWel

- not every fuel possible (corrosion)

- High efficiency at full load

- higher investment, staff and maintenance costs make steam processes attractive only for big heat demands and constant heat loads.

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Local impacts of renewable energyBiomass utilisation

• boiler

- fire tube boilers up to 30 bara

- water tube boilers up to 60 bara

- live steam temperatures 350 – 450 (475) °C (depending on fuel)

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Local impacts of renewable energyBiomass utilisation

• steam turbine

- backpressure turbine needs constant base load or coolers for minimum load

- extraction/condensation turbine for higher el. power (but lower level of utilisation)

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Local impacts of renewable energyBiomass utilisation

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Local impacts of renewable energyBiomass utilisation

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Local impacts of renewable energyBiomass utilisation

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Local impacts of renewable energyBiomass utilisation

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Local impacts of renewable energy2 x 10,7 MW (5 MWel); 24 bar, 425 °C

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Local impacts of renewable energy10,7 MW; 54 bar, 450 °C

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Local impacts of renewable energyBiomass utilisation

2 x 16.2 MWth, 425°C @ 24 bar7.5 MWel, 23 MWth

10 MWth WW peak load boiler

Thank youfor your attention!