A new straw boiler plant in the Auning district heating plant is future-proof. The building and boiler line are designed so that at any time in the future they can be expanded, and the installation efficiency doubled.
One of the components of the boiler system supplied by Verdo is the control system, which has been designed and integrated in a way allowing the heating plant in Auning to expand with another heat installation, e.g. solar installation.
"We appreciate that Verdo offers a long-term perspective. The entire installation together with the control system are prepared for any future expansion. Verdo's future-proof way of thinking will certainly encourage us to cooperate on future projects," said Hans Jørgen Larsen, Operations Director, Auning Heating.
The Auning District Heating decided to replace the old boiler from 2001. Due to an easy access to straw as fuel, the choice fell on the straw fired boiler. Obtaining straw from local farms not only guarantees easy access to fuel and savings in transportation, but also supports the labour market by providing employment for local residents. With 10-11,000 tons of straw burnt during the year, the whole operation generates 16-19 jobs.
The reason behind choosing fired boiler was the availability of biomass and tangible environmental benefits. Biomass is obtained from the overproduction of straw, and ash from biomass combustion is used in the local fields as a valuable fertilizer. The use of ash for fertilizing purposes both enriches the soil with nutrients and promotes a sustainable way of managing resources.
- Increased efficiency
- Meets stricter environmental regulations
- Handling straw different qualities
- Future-proof capacity and technology
Straw emits the same amount of CO2, whether it’s left in the fields to rot or whether it’s burnt. The calculation is quite simple, so to say.
- Straw boiler/district heating plant output: 12 MW
- Operating temperature: 98 degrees
- Return temperature: 40 degrees
- Design temperature: 110 degrees
- Fuel: straw from Danish fields
- Boiler type: Verdo Strawmaster
- Design pressure: 6 bar
- Efficiency: >91%