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Ice heats water
Published on 03 July 2018
Sweden
Småland med öarna
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About this good practice
Arena Oskarshamn is the home ice of Swedish ice-hockey team IK Oskarshamn, located in the southeast of Sweden. The ice-hockey arena was built in 1974 and completely rebuilt and renovated in 2004-2005.
In connection with the renovation, a new public swimming bath and water park was built adjacent to the ice hall as well as an artificial lawn which half a year requires warmth to be soft and the second half of the year requires chill when it becomes an ice area.
Thus, Arena Oskarshamn is an energetically complex facility where an ice hall that needs chill are placed wall in wall with a swimming pool and water park that needs a lot of heat. In order to keep down the energy costs, it has from the start been invested in various energy-efficient solutions that improves gradually. In 2011, a rebuilding of the plant's refrigeration plants was initiated in order to utilize the surplus heat from the units that cools the ice area outside and the ice hall to heat the nearby swimming pool and water park. Accordingly, the heat is sent from one part of the facility to another where heat pump technology is used on a large scale, and in that way the system is self-sufficient on heat. The system is fully automated and monitored via mobile phones and iPad. The example clearly shows the energy benefits from centralized sportscentres.
In connection with the renovation, a new public swimming bath and water park was built adjacent to the ice hall as well as an artificial lawn which half a year requires warmth to be soft and the second half of the year requires chill when it becomes an ice area.
Thus, Arena Oskarshamn is an energetically complex facility where an ice hall that needs chill are placed wall in wall with a swimming pool and water park that needs a lot of heat. In order to keep down the energy costs, it has from the start been invested in various energy-efficient solutions that improves gradually. In 2011, a rebuilding of the plant's refrigeration plants was initiated in order to utilize the surplus heat from the units that cools the ice area outside and the ice hall to heat the nearby swimming pool and water park. Accordingly, the heat is sent from one part of the facility to another where heat pump technology is used on a large scale, and in that way the system is self-sufficient on heat. The system is fully automated and monitored via mobile phones and iPad. The example clearly shows the energy benefits from centralized sportscentres.
Resources needed
The single major energy optimization project demanded an investment of 485 000 euros. The cost saving is 145 000 euros per year, which gives a repayment period of approximately 3 years. Until 2017, a total of 850 000 euros have been invested and the work carried out by own staff.
Evidence of success
Without this heat recovery, the use of district heating had been about 2,000,000 kWh / year. Today it is 600 000 - 700 000 kWh / year. This reduces costs by 145.000 euros per year, creates goodwill and is environmentally friendly. However, electricity usage is very difficult to make comparisons since it is 90% weather-dependent because there is a large ice surface outdoor.
Potential for learning or transfer
The great energy optimization at Arena Oskarshamn´s complex energy system is a unique project that has attracted great interest and caused many study visits.
At the present time we do not know how many municipalities / organizations that have implemented similar measures.
At the present time we do not know how many municipalities / organizations that have implemented similar measures.
Good practice owner
You can contact the good practice owner below for more detailed information.
Organisation
Municipality of Oskarshamn
Sweden
Mellersta Norrland
Contact
Project Manager