A.B.S. Silos references

Heating with wood pellets is also attractive in new buildings
Scope of delivery: 14 pieces of Flexilo® MAXI distributed over 4 houses
Storage quantity: approx. 100 tons
Removal: Spiral conveyor system with suction point or via direct feeding to the intermediate container, from there via a double suction pot to the pellet boilers
Fill level monitoring: demand detector including control
Boiler output: total 520 kW

The Sonnenhöfe are a new, architecturally and structurally sophisticated urban district in a residential area close to the center of Freiburg, which has been built in three construction phases since 2016. There are 4 houses with a total of 120 apartments that are designed as condominiums – a total living space of more than 10,000 m2.

The silo systems were built by A.B.S. planned in coordination with the responsible engineering office. Measurements were taken on site, from which a complete 3D model of the system was then created. A storage capacity of around 100 t of wood pellets was achieved.

A look into the detail – House D + E
The final section, House D + E, was completed last year. The storage capacity of 33 t is distributed across four A.B.S. Flexilo® fabric silos. The goal was to achieve a maximum storage volume with optimal use of space. This allows the number of fuel deliveries to be reduced to a minimum. There was also the challenge that the two pellet boilers had to be supplied by all four fabric silos.

The solution: By using an intermediate container, it is possible to combine all four fabric silos with the two pellet boilers. The intermediate container is filled with a conveyor spiral from a storage silo. Since each fabric silo is equipped with an empty detector, the system switches to the next silo when it reaches a specified filling level. The four empty indicators are visualized on the control. This gives the property manager a quick overview of the pellet inventory.