Sustainable and energy-efficient bathhouse heated with district heating
Inaugurated and already in use, Hällefors municipality’s new bathhouse uses district heating from Adven. The bathhouse in Sweden is not only stylish and practical, but it also combines the benefits of different types of energy sources to create an energy-efficient and sustainable system.
Before Hällefors municipality built its bathhouse, the children were driven to Filipstad, 30 minutes away, for swimming lessons – a trip that cost the municipality and its residents both time and money.
“I sat at the swimming lesson in Filipstad on a Sunday evening and noticed that many children were from Hällefors. For fun, I started to calculate the gasoline and energy needed to drive them back and forth. With the new bathhouse, there are many cars and buses that do not have to travel”, says Peter Wiker, project manager from Hällefors municipality.
The idea of a bathhouse had been in the municipality’s mind for a long time, and when the cooling solution in the adjacent ice rink was rebuilt in 2015, they built the energy system with the new bathhouse in mind. The technical solution is based on combining the benefits of different types of energy sources to create an energy-efficient and sustainable system.
The solar cells on the roof provide electricity that is used in the compressors for the ice rink’s cooling machines. Instead of fanning away the heat generated by the cooling machines, it is used to heat either the ice rink or the bathhouse’s guests. The major heating need and the basis for the energy supply in both the ice rink and the bathhouse, is district heating – something everyone in the project agreed on from the start.
The major heating need and the basis for the energy supply in both the ice rink and the bathhouse, is district heating – something everyone in the project agreed on from the start.
“We didn’t feel we needed to discuss anything else, even the consultants from Stockholm said it should be district heating. Not least because the district heating pipeline is as close as it is here. In addition, we have district heating in our other buildings,” Peter explains.
During the construction period, the project has been able to use district heating as construction heat, and both the municipality of Hällefors and Adven have been satisfied with the cooperation.
“It has just worked,” says Peter. “The only thing is that you are in the hands of Adven’s pricing, but that is no different from our electricity supplier, we can’t produce all our electricity ourselves either. It’s also perfect to have a local producer of district heating, I can see the piles of biofuels that Adven uses when I’m out running.”
Work is now underway to optimize the energy use in relation to Adven’s hourly pricing model in Sweden. This work is carried out in cooperation between Adven’s account managers and the customer.
“During the first year of operation, we analyze the customer’s energy use and optimize the base capacity in the pricing model together with the customer based on this. After that, the base capacity will be adjusted once a year at the customer’s request,” says Jonas Århammar, Account Manager for District Heating at Adven.