Heat for magpies? Not anymore!
Previously, the heating of the Ahlstrom-Munksjö Karhula plant was carried out using district heating. The heat recovery system supplied by Runtech Systems was commissioned in October-November 2018. The target of the project was to utilize the waste heat from the process to heat the property instead of the purchased district heating. Runtech installed a water-air heat exchanger in the process exhaust air system to heat the water in the radiator network. For production interruptions, the district heating system was left to operate in parallel.
Energy efficiency is important to Ahlstrom-Munksjö. “Promoting sustainable development is cherished in our company. And while at the same time we are saving a large amount of money every year, then what could be better. It felt bad trying to cut the mill heating bill to a minimum and at the same time let the heat into the sky. Now the heat comes free for the needs of the entire mill, as long as the production is running. We can now also heat up the warehouses for free that were previously kept cold,” says Janne Auvinen, Maintenance Manager, Ahlstrom-Munksjö, Karhula.
The share of district heating in heating energy has dropped dramatically thanks to Runtech's heat recovery system. After commissioning, district heating is largely only needed during production downtimes and in severe frosts.
