special feature
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This feature was funded by
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Fact file : district heating
number of integrated systems in the city  4
number of distribution networks  21
people supplied  500,000
pipes  1,370km water / 130km steam
large bore transmission network  160km
main CHP plants  10
main hot water storage facilities  3
booster pumping stations  4
peak load plants  50
heat exchange substations  65
fibre optic control connections  8km
end user av. emission  100kg CO2/MWh
annual saving  665,000 tonnes CO2
District Heating in Copenhagen (pdf) : www.dbdh.dk/pdf
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District Heating and Cooling
in Copenhagen
Part of our Low Carbon Copenhagen project ... project index >
introduction  •  combined heat + power  •  Copenhagen's network  •  sources
key facts  •  urban planning timeline  •  pedestrianisation timeline  •  Denmark timeline
District heating in Copenhagen
Introduction
Although many European cities have district heating schemes, Copenhagen's is perhaps the most impressive. Its four main integrated systems supply 98% of the city — the equivalent of 50 million sq m of floor space. Now it's embracing district cooling, with the first such network in Denmark. District heating is integral to the country's energy policy and is accepted as a normal part of everyday life.
A district heating network supplies heat to end users in the form of hot water (or steam), in a closed system — its radiant heat is used to heat end user systems, after which it returns to be re-heated and sent around again. Insulated twin-bore pipes are laid in the streets along with other utilities. District cooling works similarly, supplying cold water for the cooling down of end user systems.
To get the most fuel economy and least environmental impact, district heating works best when it uses the enormous amounts of waste heat producted by industrial plants. Copenhagen's network is closely linked to its low carbon power generation installations. Its 10 main combined heat and power (CHP) stations supply most of the network, as well as generating electricity. Some of these are waste-to-energy plants — waste and biomass incineration provided one third of the heat supply in 2008.
In November 2009, the International Energy Agency announced the results of the first Global District Energy Climate Awards. Among the winners is Copenhagen's district heating system. You can download (pdf) the city's winning application document from www.copenhagenenergysummit.org/award.pdf. It contains a lot of useful information about the network and photos of installations.
The greater Copenhagen network is one of the largest district heating systems in the world. By using its CHP plants, the city has successfully reduced CO2 emissions associated with heat generation by 30-40% compared with equivalent use of individual oil or gas fired boilers ..... next >
introduction  •  combined heat + power  •  Copenhagen's network  •  sources
key facts  •  urban planning timeline  •  pedestrianisation timeline  •  Denmark timeline
images  courtesy Rambøll
sources and references  see sources
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"We are often asked to
point out the most interesting and important characteristics
of Danish district heating ...
This is possible, but only with difficulties, as it all seems
natural to us."
Danish Board of District Heating (DBDH)
Just imagine
by channel6ada at www.youtube.com
Part 2/3 of District Heating & Cooling from Denmark
Date: 31st May 2010