waste to energy a new approach by fernwärme wien gmbh stefan fazekas - waste to... · biomass and...

Seite 1 | www.fernwaermewien.at | Waste to Energy - a new approach by FWW | Nov. 2008

Waste to EnergyA new approach by

Fernwärme Wien GmbHDI (FH) Stefan FazekasMiteco Forum, Belgrade

Nov. 18th, 2008

http://www.fernwaermewien.at


Company profile Fernwärme Wien GmbH



Fernwärme Wien Revenues business segments 2006/2007

4%

27%69%

Miscellaneous14.2 Mio. EUR

Power supply243.6 Mio. EUR

Waste Services94.4 Mio. EUR



Fernwärme Wien Performance 2006/2007

n Sales/revenues: 352.2 Mio EUR

n Heat distributed: 4,314 GWh

n District cooling : 20.6 MW (connected load)

n Waste disposal: 849,400 t

n Workforce: 1,168

n Investments: 79.6 Mio. EUR

n Overall pipe length: app. 1,100 km



Fernwärme Wien Waste disposal 2006/2007

213,000 t Sewage sludge

519,000 t Household wastes

Thermal waste treatmentEnergy production

100,000 t Hazardous wastes

1,375,000 MWhDistrict heatingfrom waste disposal



Fernwärme Wien – district heatingGeneration structure and installed output

34,8%

61,5%

3,7%

7.6%

42.8%

49.6%

50.4

% w

aste

heat

96.3

% w

aste

hea

t

Base load:Waste incineration and OMV refinery

Main load: power heat coupling, Biomass and industrial waste energy

peak load: gas/oil generation

Actual Generation Installed capacity



Fernwärme Wien – district heatingResource conservation

65.7% saving in primary energy 2006/07

Minus 294,000 t Minus 368 Mio. m³Oil extra light natural gas



Fernwärme Wien – district heatingCO2 reduction

65.7% saving in primary energy 2006/07

Minus 1,000,000 t CO2 Minus 440,000 t CO2(compared to oil usage) (compared to gas usage)



Fernwärme Wiendistrict heating distribution and power supply

thermal waste treatment plants (base load)

n Spittelaun Flötzersteign Simmeringer Haiden Raffinerie Schwechat

Power heat coupling (main load)

n Simmering (incl. biomass energy)

n Donaustadtn Leopoldau

Power plants (peak load)

n Arsenaln Kagrann Inzersdorfn Leopoldaun Spittelau

n MVA Pfaffenau (new)



Fernwärme Wien – new plantMVA Pfaffenau

MVA Pfaffenau facts

n Constructed 2006-2008 by city of Vienna

n Operated by Fernwärme Wienn Capacity: 250,000 t of

household wastesn 410,000 MWh district heating

Result:thermal treatment of all household wastes in Vienna possible



Fernwärme Wien – excess Energydistrict cooling

District cooling – facts:

n Summertime: too much heating energy for warm water due to new waste incineration plant and biomass plant.

n Usage of district heating energy in absorption cooling devices

n Provision of district cooling for hospitals and office buildings.

n Effective usage of waste energy (during summer) and additional power –reduction for cooling.

n Award winning concept



Fernwärme Wien - district cooling

Why district cooling?n Need for cooling of

buildings will dramatically increase the next years.-> Energy usage and costs as well as CO2 Emissions for cooling will increase.

n District cooling provides a resource, energy and cost saving way to cope with that need.

n District cooling will also be viable during winter time (-> buildings with glass surface)

n District cooling has basically the same potential as district heating

10,000

8,000

6,000

4,000

2,000

Terawatt-hours 1990 1995 2000 2005 2010 2015 2020

Prognosis of cooling need of EU-15 states



Fernwärme Wien – district coolingAbsorption chillers

n Basic concept:- heat exchanger- heating energy vaporisesa coolant in separated circle is cooled due to enthalpy of evaporation- coolant is transported in tubing in the walls of the building->- therefore no need of compression with electrical power - sweating is basically the same concept

n Central chillier plant- Spittelau: middle of Vienna- supply of cooling energy by extra tubing for nearby buildings such as main hospital Vienna and offices.- most energy efficient way -> FWW focuses on that.

n Decentralized chillier plant- for e.g. large office complexes.- FWW provides heat energy- absorption chillers are located in the buildings.



Fernwärme Wien - free cooling: other cooling sources using chillier plants

Free cooling:

n river water cooling:using river water in winter for cooling a storagea concept for the usage of Danube water is present

n Geothermical cooling/heating:concept of using geothermic sources for district heating and cooling (with central chillier plants) located in east-Vienna



Fernwärme Wien - district cooling: Environmental issues

n District cooling needs far less energy than normal chillers

n This results in large reduction of CO2 Emissions

n The energy is already there – it just needs to be used

n Combining the need of total waste incineration with sensible energy usage is the best approach for the good of our future generations

1

0

Energy factor

Compressionchillier

district cooling(energy from power

heat coupling)

district cooling(energy from

waste incineration)

district cooling(energy from free cooling)



Fernwärme Wien - summary

Fernwärme Wien provides:n substantial environmental servicesn District heating and coolingn An essential concept for CO2

emission reduction

That is:

Cool!



Thank you for your attention!

DI (FH) Stefan Fazekas

Fernwärme Wien GmbHWerk Simmeringer HaideSpittelauer Lände 45A 1090 WienAustria

Fon: +43-1-313 26-6376Fax: +43-1-313 26-6154Mobile: +43-664-623 [email protected]


mailto:[email protected]

waste to energy a new approach by fernwärme wien gmbh stefan fazekas - waste to... · biomass and...

Documents