Solar energy swimming complex @ Pori
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1 F i n l a n d ’ s f r s t swimming complex Solar energy
description
Finland's first solar powered swimming complex was built in 2011 in Pori. There are unique façade collector system, traditional thermal collerctors and photovoltaic panels (50 kWp). Energy efficiency has been taken in consideration when developing the building’s other solutions.
Transcript of Solar energy swimming complex @ Pori
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Finl
and’s f rs
t
swimming complexSolar energy
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T he city of Pori made a bold move and strengthened its image by building the first swimming complex in Finland to utilise solar power. With this, Pori
wants to combat ongoing climate change and encourage other municipalities to choose responsible energy options.
With the solution Pori chose, exceptional attention was given to the design and appearance of the building. The façade of the building was integrated with Aurubis’
Nordic Solar solar thermal energy system, the first of its kind in the world.
The swimming complex project combines the newest technology, the development of renewable energy, research, innovation and strong, local know-how. Energy efficiency has been taken in consideration when developing the building’s other solutions. For example the thermal energy from air conditioning exhaust and shower water is being collected.
Solar thermal collectors
200 m²
Sunny weSt coaSt
The model Pori chose represents a new approach to how Finnish cities slow down climate change. Even if solar energy can only replace a part of energy requirements, these are still significant steps in the right direction.
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Solar thermal collectors
200 m²
Photo: Aurubis Finland Oy
Façade solar thermal
collectors 80 m²
Photo-voltaic panels
360 m²
DiD you know ?
The façade collector system is used to preheat the water coming from the
cold pools, which means that a small difference in temperature provides as much energy as possible. The preheated water is then pumped into the roof
collector system, after which the solar heated water is returned to the swimming pool water cycle. When necessary, additional heat can be generated with district heating. The calculated energy produced by the solar thermal systems
each year is 120,000 kWh. This amount would heat 60 two-room apartments. The roof collectors are flat plate collectors with copper absorbers, made in Austria by Sonnenkraft. There are 88 of them and they are set up at a 45-degree angle.
The amount of en-ergy produced by the complex’s solar energy systems (165,000 kWh) amounts to burning 19,000 litres of oil (10 kWh/l) or 250 bulk cubic metres of fire-wood (790 kWh/i-m3)
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Façade collector system Roof collector system
Pool water from thecold water pool
Heat exchanger
Heat exchanger
The water heated by the sun is returned to the swimming pool water cycle
Pool water from the swimming pool Heated pool water for the swimming pool
Distr
ict he
atin
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4°C
8°C
26°C
22°C 28°C
DiD you know ?
On the roof of the swimming complex there are 250 NAPS Pallas 210M PBW photovoltaic panels. Their combined surface area is 360 m2.
The panels have been installed at a 30-degree horizontal angle and their maximum power output is approximately 50 kW. The panels have a special micro-prism glass, which enhances the collection of indirect sunlight and improves output.
The combined expected return of the panels is 42 MWh, which was exceeded in the first year with a result of 45 MWh.
HiDDen from view
Photovoltaic panels (front) and traditional thermal collectors (back) are hidden from view on the roof of the swimming complex. Sunlight coming through the window on the top right hits the diving platform at 2 pm.
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and are connected to switch-boxes. These boxes contain the fuses and a disconnector for each series. From here the electricity is divided to three inverters that also measure the generated output. The inverters convert the direct current (DC) coming from the solar panels into alternating current (AC), suitable for the power grid.
inverterS anD connectionS
Electric panels are connected in a series, like batteries, so the voltage can be higher (approx. 550V). By doing this the dissipation of energy
in the wiring is minimised.
The panels have been connected into 12 series. Each series contains 20 to 21 panels. The wirings go into the ventilation unit room
You can follow the output of the
swimming complex in real time
on solarforum.fi
Pori Energia handles the input of solar electricity into the power grid.
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The display board shows the current output of the solar systems in kilowatts. 1 kW is a thousand watts.
The energy figure on the board is the amount of thermal (lämpö) and electrical (sähkö) energy produced in megawatt-hours, since the system was deployed. One MWh is a thousand kilowatt-hours. The combined output of the roof and the façade collectors is used for the display board.
Satakunta University of Applied Sciences maintains the data collection system.
Get to know the structure
of the collectors with helpful
cross-sections.
Note the micro-prism glass of the solar panel.
Check out the photos of the
façade collectorsunder construction.
tHe DiSplay boarD
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Looking at the façade from below allows
you a glimpse of the collectors
pyranometerSPyranometers measure the amount of solar energy on the panels and collectors. They are a part of the weather station that measures air temperature, humidity, wind and rainfall.
The copper material used to collect solar heat on the façade of the swimming complex
has been integrated as part of the copper architecture of the building. Hiding the solar collectors into the façade requires it to be made out of materials that conduct heat. Copper does this extremely well.
Looking at the façade from below allows
you a glimpse of the collectors
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Swimming complex architecture by: Architectural Agency Arktes Oy
Contents of the brochure by: City of Pori, Enviromental Agency and Technical Service Centre, Satakunta University of Applied Sciences and Aurubis Finland Oy Layout and translation: Idearäätäli Oy
Aurubis Finland OyBusiness Development ManagerPetri [email protected]. +358 40 829 8550
Pori Technical Service CentreProject EngineerJouni [email protected]. +358 44 701 1680
Pori Central Swimming ComplexPresidentinpuistokatu 6
360°panoramic photos
on the web
http://www.pori.fi/en/index/ sportsandleisure.html
Read the code with your phone’s QR-code reader
Satakunta University of Applied SciencesHead of Research and Competence Centre Suvi [email protected]. +358 44 710 3304
Pori Leisure Office (requests for visiting)SupervisorTimo Lehtimäki [email protected]. +358 44 701 1439
Additional information
Porin kaupungin ympäristövirasto
