PowerPointPrsentation

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No energy wasted Example of an energy strategy
in urban areas
Brussels, 22nd June 2006
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Energy efficiency is in discussion

• finite fossil energy resources
• increasing commodity prices
• dependence on unstable political regions
• discussion focused on end energy
• look on use of primary resources is needed!!

District heating in urban area is an important
part of the solution!
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Development of district heating in Vienna 1969
Heizbetriebe Wien, waste incineration and stand
alone grids 350MWth capacity 1979 reached
production 55 in heat plants and 45 in waste
utilisation Since then new heat sources developed
with the use of otherwise wasted energy
Share 2005 Peak load heat plants 2,5 CHP
66,1 Industrial CHP 7,6
Waste utilisation 23,8
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Primary resource factor (PRF)
PRF Fernwärme Wien lt 0,30 Compare Conde
nsing boiler 1,2 Heatpump 0,85 Use of
waste heat from industry, power generation and
waste incineration is responsible for low
PRF (Picture Refinery near Vienna delivers
industrial waste heat)
Use it or loose it!
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Advantages of low Primary resource factor (PRF)

• Leads automatically to
• lower Emissions of greenhouse gases AND air
  pollutants district heating reduced and will
  reduce the Volume of pollutants in Vienna
• high security of supply temporary shortages in
  gas or oil supply do not affect us
• lower dependence on fuel prices - price for
  household customers have not risen in Vienna
  since 1991

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Example for lower emissions in terms of CO2
Calculation from federal environmental
agency Includes also CO2 from waste
incineration Value without waste 95 kg/MWh
used energy
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Today Market share 35 5.290 GWh Heat
sold 2020 expected market share gt 50 7.500
GWh heat sold Growth based mainly on renewables
and waste heat!
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New plants already under construction 2006
biomass CHP 37 MWth
2008 waste utilisation Pfaffenau
54 MWth 2008 Geothermal source
15 MWth 2009 CHP repowering
Simmering 1/2 170 MWth Installations to
utilise capacities and to raise efficiency
Additional mesh in the network 100 MW
useable Heat storage facility for district
heating 170 MW usable Planned plants mid
and long term options Bio fuel plants
Further CHP-Repowering Coal based CHP
including CO2 separation
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New biomass CHP starts operation in few weeks
max. 66 MWth
Efficiency in CHP mode gt 80
600.000 piled metre woodchips per year
District heating 37,0 MW Up to 300 GWh per year
Electricity 16,2 MWel gt 140 GWh per year
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• Biggest difference to small biomass plants
• High efficient combined production of electricity
  and heat
• Denox catalytic converter
• Bag house filter

this way? decentral
How would you do it?
or this way? central
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• Initiated development
• Heat is to 1/3 produced in plants with renewable
  energy or waste as fuel
• 97 of the heat is made in CHP (waste,
  renewables, fossil)
• To produce 2/3 of the heat the highefficient
  fossile CHP needs far less fuel input!
• Therefore the share of renewables and waste on
  used fuels is 60

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• This development will
• lower PRF lt 0,15
• lower specific emissions of district heating
  system gt 100 t CO2/GWh (CO2 of waste included)
• further increase security of supply
• guarantee low energy costs for the customers

calculation includes assumption that PRF for
electricity in Europe will improve from 2,5 now
to 2,1 in 2020
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• Consequence of this expansion for Vienna
• Reduction of 2,7 million MWh fossil fuels
• Saves about 53 millions energy import
• 38 reduction of CO2 emissions for domestic use
• 11 reduction of CO2 emissions for waste
  treatment
• 8600 GWh electricity produced in chp mode
• 1/3 of Austrian thermal electricity production
• 100 waste recycling in Vienna (energetic and
  material)
• 100 of industrial waste heat in the area is
  used

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No Energy wasted
What is possible in Vienna is also possible
elsewhere
Thank you for you attention
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