Tversted Heating Plant

In 2015 Linka installed a wood pellet system at Tversted Heating plant.

Before installing the new biomass plant, Tversted Heating plant was one of the most expensive heating plants in Denmark, making it difficult to offer customers competitive heating prices. A settlement behind the energy agreement of 2012 enabled Tversted’s switch from gas to biofuel.

At that point, Tversted had already installed solar panels, and the wood pellet plant will therefore be used as a supplement during the cold seasons, ensuring that the area is well-supplied year round.

Since the plant is located within a residential area they were not able to expand the existing buildings. Therefore a wood pellet system, which takes up less place than other plants, was the optimal solution. To accommodate a possible switch of fuel in the future, the system was prepared for wood chips.

Linka installed a 1,000 kW hot water plant designed for a maximum operating pressure of 4 bars. A moveable step grate is installed inside the boiler and prevents development of clinker. The boiler is fed from the nearby pellet pit, with a scraper unit including seven scrapers. The scrapers move the wood pellets to a sunken auger from where they are transported to the boiler by augers.

An economizer is also installed on the plant. This will extract additional heat from the flue gas and increase the efficiency.