Key Facts
Vienna (2nd district), Austria
Solar Collectors Area 156m²
Solar Thermal Capacity 110 kWth
Storage capacity 3 x 2,000m³
Commissioned 2008
Type of collector/supplier Flat plate
Project Developer Sonnenkraft GmbH
Annual Energy Delivery 70,000 kWh
CO2 savings 18 tonnes per year
Brief
The city hotel Wilhelmshof in Vienna with 200 guest beds received a solar heating system as part of an expansion in 2008. The 156m² system is the second largest solar system on a hotel in Vienna.
Technology
Flat plate collectors placed on the building’s roof produce solar heat, supplying almost half of the large demand of hot water used for guests, the kitchen and the in-house laundry. The solar heat is stored in three storage tanks, each with a capacity of 2,000m³. A groundwater heat pump provides additional heating.
Financial Structure
The project was financed by the owner.