BRUNECK, ITALY |  4 VAS biomass boilers + 1MWe Turboden ORC unit powering district heating 

PROJECT DESCRIPTION

The Bruneck community operates the largest district heating grid in South Tyrol (North Italy) with 110km of pipes connecting 95% of all possible customers.

In the first phase of the district heating project in 2001, two VAS biomass boilers with a total of 16MWth were installed. In 2002 and 2004 the district heating capacity was further expanded and in 20111 an additional 6,5MWth VAS thermal oil plant was installed. In addition to the district heating network, Bruneck features a Turboden ORC unit of 1MWel which delivers electricity to the grid.

Each boiler has its own ESP for dedusting under 20mg/m³ (limit value). After ESP`s the two gas streams are combined to one to be treated in one Condensation Unit. Exhaust gases are cooled down to 40°C before being released to the chimney. The Condensation Unit has three effects: heat recovery, fine dedusting and devaporization. Regularly six-month measurements at the plant confirms a max. dust concentration after the Condensation Unit of 5mg/m³.

All four plants at Bruneck combined use on average 50.000 tons of biomass per year to cover app. 75% of the total heat consumption (109 Mio kWh). 

TECHNICAL DATA