Tampere district cooling, Tampere, Finland
blow-off pipe installation
ammonia alarm system
Tampereen Sähkölaitos is the largest supplier of lake sourced remote cooling in Finland and Europe. One kilometer long and 1.4 meters in diameter, a water pipeline pumps cold water from the deep of Lake Näsi to the remote cooling plant in the Kaupinoja shore, which distributes remote cooling across Tampere’s growing remote cooling network.
Oilon is responsible for the delivery, installation and commission of the two new water coolers in the plant in 2019. Completed in 2017, the plant already has two operating water coolers supplied by Oilon. The two new 6.5-megawatt coolers will increase the plant’s mechanical cooling capacity to 23 megawatts.
In addition, Oilon is responsible for the maintenance of all supplied machinery.
– We are preparing for an additional increase in remote cooling demand brought about by the new construction projects in the city. As the plant’s cooling capacity increases, we will be able to produce cooling in an even more energy efficient manner, says Kari Wessman, Project Manager in Tampereen Sähkölaitos.
Lake source cooling is extremely energy efficient
The operation of the remote cooling plant in Kaupinoja is mostly based on free cooling, which utilizes cool lake water. During warm season the cooling capacity generated by the lake water is not sufficient on its own, so additional cooling produced by large water cooler compressor units is required. Most of the cooling energy is lake sourced, however. Kari Wessman has calculated that approximately eighty percent of the annual cooling energy is sourced from Lake Näsi.
The remote cooling plant in Kaupinoja owned by Tampereen Sähkölaitos is located ashore Lake Näsi, which is the primary source of the plant’s cooling energy. The cooling devices use ecological ammonia as their refrigerant. The cooling system is fully automated, and the unoccupied cooling plant is remotely supervised from the company’s power plant in Lielahti.
– I am delighted that we have had the opportunity to partner up with Tampereen Sähkölaitos in building this very energy efficient remote cooling system. The Kaupinoja plant is an all-around excellent example of a centralized remote cooling solution. Now the residents of Tampere get to benefit from very energy efficiently produced cooling, praises Oilon’s Chief Business Officer of Industrial Heat Pumps and Cooling Martti Kukkola.