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Under InFOrMATIOn FACTS The SwedISh ePA PreSenTS FACTS AbOUT dIFFerenT ISSUeSinformation facts
beST PrACTICe eXAMPLeS enerGY SwITCh LIP – LOCAL InVeSTMenT PrOGrAMMeS JAnUArY 2011
Photograph: Oskarshamn energi Ab
Industrial cooperation in
Oskars-hamn resulted in more bioenergy
Two local industrial plants in Oskarshamn now obtain steam from bioenergy instead of oil-fired boilers as in the past. The project improves sustainability in Oskarshamn and is a good example of a successful cooperation between the municipality, the energy company and industry.
With support from the local investment programme (LIP), Oskarshamn Energi connected the two industrial plants of SAFT and Bohmans Fanér to the biofuel-fired district heating plant and now supplies steam to the plants. As a result of the more even load on the district heating plant, Oskarshamn Energi is now able to operate its b iomass boiler all year. It was previously forced to use oil or liquid petroleum gas during the summer months when the load was low. The project came to an end in 2002.
PositiVE EnVironmEntaL anD Economic imPacts
• Renewable energy replaced 1,800 m3 of oil per year.
• Carbon dioxide emissions decreased by 4,900 tonnes per year.
• The action has led to greater efficiency in energy use by the industrial plants. • The operating costs are lower than for similar systems
The result of the project is considerably better than expected. The principal rea-son is probably that the efficiency of the older boilerhouses was worse than had originally been assumed.
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information facts
beST PrACTICe eXAMPLeS enerGY SwITCh LIP – LOCAL InVeSTMenT PrOGrAMMeS JAnUArY 2011 ISbn: 978-91-620-8551-3
imPLEmEntation
Steam culverts were laid from the heating plant of Oskarshamn Energi to the two industrial plants, substations were installed for the distribution of steam and con-densate in the boilerhouses of the two plants and adjustments were made to the connections. Among other things, a steam boiler at one of the industrial plants was linked into the system, increasing flexibility. Reconstruction was also carried out to enable heat to be supplied to offices and timber drying kilns.
The systems were built for steam instead of hot water as had originally been planned because it proved too expensive for the industrial plants to convert to hot water in their distribution networks. It proved expensive, but was necessary to implement the project. The relatively short distance between the heating plant and the industrial plants is essential for the steam distribution to be effective. Oskarshamn Energi has gradually connected more industrial sites to the district heating network.
PotEntiaL anD fUtUrE BEnEfit
Biofuels replacing fossil fuels produces substantial positive climate effects. It is both economically advantageous and increases the environmental benefit to use biofuels that would otherwise be a waste fraction and that cannot naturally be used for anything else, such as digestion. District heating systems reduce air pollution locally, and make it possible to utilise waste heat from other operations and to produce combined heat and power. As urbanisation advances globally, the prospects of expanding district heating are improving.
whY beST PrACTICe
The cooperation between Oskarshamn energi and the industrial plants made the project possible. Oskarshamn energi has gained experience of steam production through the project that it did not have previously, which may be of benefit for possible combined heat and power plant projects. The project has been a good reference for this purpose by identifying the positive effects of good cooperation. Collaboration with industry means that the district heating plant is now able to run on biomass fuel all year. The project has led to further improvements in energy efficiency at the companies involved. FOr FUrTher I1nFOrMATIOn
Contact:
ronnie Gunnarsson, Oskarshamn energi +46 (0)491-88110,
ronnie.gunnarsson@oskarshamnenergi.se. Kaj nilsson, Municipality of Oskarshamn, +46 (0)491-88750,
kaj.nilsson@oskarshamn.se Contractors/providers:
Oskarshamn energi together with sub-contractors.
For further information on best Practice: www.swedishepa.se/bestpractice www.naturvardsverket.se/mir FACTS
LIP Oskarshamn 2000 Action 03
environmental investment: SeK 16.7m Grant: SeK 4.2m
