The Austrian pilot project - Dieselweg

Location

Graz, Austria

Number of apartments

204 all together

Number of buildings

6 (Dieselweg 4, 6 and 8; Dieselweg 12, 14; Dieselweg 3-19)

Type of building

Social housing area

Year of construction

1952 (Dieselweg no. 3-19), 1959 (Dieselweg no. 4,6,8) and 1972 (Dieselweg no. 12,14)

Walls

Bricks and concrete

Ventilation

Natural

Heat source

Decentral: 13% solid fuel, 33% oil and 54% electricity

Heating demand

142 kWh/m²a (Dieselweg no. 3-19), 184 kWh/m²a (Dieselweg no. 4,6,8) and 225 kWh/m²a (Dieselweg no. 12,14)

Renovation need

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Improvement of thermal insulation

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Change of windows

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Balcony renewal (due to thermal bridges)

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Changes in the HVAC system:

Installation of central radiator heating system, installation solar thermal system for hot water and installation heating and ventilation system with heat recovery

Dieselweg 4, 6 and 8

Dieselweg 12, 14

Dieselweg 3-19

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All construction works ended in 2009.

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Monitoring is now established in all parts of the buildings and works since one months.

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The energy consumption is continuously evaluated by the owner.

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Complaint management is working very well - there are contact persons with telephone-numbers for technical and operational problems.

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Interviews will be made with the tenants asap.

The construction works on site are nearly finished, but some of the remaining work includes:

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The last pipes and ducts of the heating and solar thermal system are mounted at the moment.

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The prime contractor "gap-solution" is tuning the ventilation and heating system together with the tenants. Some tenants have complained about that the incoming air is either too warm or too cold.

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They are now finishing the façade on the building at Dieselweg 3-19. They have been mounting facade-integrated solar thermal collectors at the southern front of the building (3m² collector area per flat).

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Together with gap-solution, AEE Institute for Sustainable Technologies are now planning the monitoring and measuring system for Dieselweg during this autumn and winter.

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Tenants are already able to obtain their amount of energy consumption for electricity, domestic hot water, heating at an internal website of GIWOG (the building company).

    Renovation - new façade

Renovation - facade-integrated

solar thermal collectors