Carbon-efficient district heating for the city of Graz

A new boiler plant for the generation of CO2-efficient district heating from natural gas is planned to feed the district heating supply for the city of Graz. Numerous well-known and international plant manufacturers have applied for the overall project. Viessmann was awarded the contract together with Bilfinger and Verbund Thermal Power (VTP).

The picture shows several installed double flame tube boilers.
The new boiler system ensures a high level of supply security

The system consists of three double flame-tube boilers with a unit weight of 90 tons. Transporting the three units was therefore complex – first over the Danube and the last few meters by heavy goods transport to Werndorf near Graz.

All boiler, burner, and system controls are based on a freely programmable control system. The boiler and system controls take over all specified parameters for the execution of energy-optimized boiler operation.

What is unique about the modern firing technology is not only that it complies with the emission limits for boiler systems, but it also meets the requirements of the BAT (best available technology) document. This is the first of its kind in Austria on this scale and with this technical concept.

Peter Huber, CEO of Viessmann Austria, commented: “The completion of this order represents a further milestone in the successful activity of our Industrial Boiler department.” The tightly coordinated schedule and the technical parameters of the boiler system were a particularly exciting feat achieved by all project staff. Thanks to the outstanding teamwork and the excellent coordination of everyone on the construction site, the tasks were completed successfully and on time. Peter Huber continues: “We look proudly at the new boiler house and the technical system components used within it.” 

Transport of the boiler system and bringing-in procedure in Werndorf

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    Image 1

    Boiler unloading and feeding

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    Image 2

    HWK with natural gas/air supply

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