solar thermal in sweden
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Solar Thermal in Sweden. Visiting group from Bulgaria Stockholm 2008-05-29 Arne Andersson Swedish Energy Agency [email protected]. What will be spoken. Possibilities in Sweden The swedish situation Environmental advantages Technics Examples Economy. - PowerPoint PPT PresentationTRANSCRIPT
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Solar Thermal inSweden
Visiting group from Bulgaria
Stockholm 2008-05-29
Arne Andersson
Swedish Energy Agency
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What will be spoken
• Possibilities in Sweden
• The swedish situation
• Environmental advantages
• Technics
• Examples
• Economy
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Main issues for solar thermal
• What kind of energy is replaced by solar thermal ?
• What kind of environmental benefit is connected
• Is there any reduction on green-house-gases ?
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Who gains the most ?
• Solar heating is more interesting for the endconsumer than the energydelivering company
• It is more a way of saving energy than producing energy
• The value for the endconsumer is 1.00 Sek/ kWh or more, but for the energy producer it is about 0.30 Sek /kWh.
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Sweden
9 million inhabitants Large bioenergy sources ~250 000 sqm of solar
collectors, i.e. ~ 25 sqm per 1000 capita
Small but developing solar energy association …
Small but positive development for solar heating ….
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Main applications
Pioneering solar district heating
Pioneering roof module collectors on multifamily buildings
Majority of solar systems are combined with wood chips, briquettes and pellet boilers …
Preheating hot water in single and multifamily buildings ...
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Market introduction
• Misc. R&D programs 1975-2003
• Misc. investment subsidies 1978-1997
• Quality label introduced in 1990
• Performance based investment subsidy from 2000- … ( at present until 2010),
• Initiated and evealuated by Energimyn-digheten, Boverket and Svensk solenergi
• Adoption of Solar Keymark
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Solar district heating
Kungälv 200010 000 sqm ~ 7 MWth
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Swedish technology !?
There are ~120 systems with >500 sqm solar collectors in Europe ... (>350 kW thermal power)
>20% are in Sweden .. ! ~40% of the collector area with
modules developed in Sweden .. ! ~60% of the collector area with
Swedish absorbers .. !
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Solar heating plants
> 350 kWth
> 3 500 kWth
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Systems
• Combisystems for single family houses – Boiler + 500 – 1 500 liter tank + 10 sqm collectors
• Solar hot water for single family houses - 5 sqm colectors + 300 liter (Electric heater)
• Solar hot water and/or combisystems for multifamily buildings - 3-5 sqm per apartment; 100 liter/sqm - 1 sqm per person
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Vallda, 150 m², 1982-
Since 1978
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EKSTA/Onsala ~ 220 m² - 1995
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Lunden Onsala 1995
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Mounted directly on the roof trusses
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Gårdsten 2000
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LESOL AB – 2006/2007
The most installed
Collector in Sweden
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”Houses without heating system” – Lindås - 2003
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Solar thermal in SwedenGlasade solfångare - Sverige [MW th]
Källa: SP o. Svensk solenergi
0
5
10
15
20
25
98 99 00 01 02 03 04 05 06 07
Anl >100 m²
Anl 15-100 m²
Villa <15 m²
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Villavärme [GWh]
0
1 000
2 000
3 000
98 99 00 01 02 03 04 05 06
Solvärme
Pellet
Solar 3% in relation to
use of pellet!
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Pool collectors [MWth]
0
5
10
15
20
25
98 99 00 01 02 03 04 05 06
Sweden
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Sample in AustriaSpa
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Camping
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Solar heatGlazed collectors
Flat plate collectors
Vacuum tube collectors
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Support for installationSubsidies
• Investment grant 2.50 SEK/ inst. kWh/ Year
• Only energy verified collectors
• Investment grant since the year 2000
• Will last until 2010-12-31 under the same terms (as far as we know today)
• 2.50 SEK~ 0,40 USD-cents or 0.35 Euro-cents
• Carried out by The National Board of Housing and Planning
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Principle of solar thermal system
Solar collector
Hot water tank with heat
exchanger spiral
Auxiliary energy
Hot waterCold water
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Principles for solar thermal system
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Solar heating plant principle
ForbrugereSolfangerfelt Consumers
District heating boiler plant
Solar collector field
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Solar heating for swimmingpools