Case Study: nZEC - Energy refurbishment of 67 dwellings in Franz-Stenzer-Str, Berlin, Germany (UNDER MONITORING)

Name of organisation: Wohnungsgenossenschaft Marzahner Tor eG

Stage of development: completed

Year of finalization: 2011

Type of project: refurbishment

Area: urban

Scale: individual buildings

Type of building: Apartment in a block of six to ten stories

Number of units/dwellings: 64

Tenure: cooperative ownership

Street: Franz-Stenzer-Str. 55-57

Postcode: 12679

City: Berlin

Region/ County: Berlin

Country: Germany

Last Update: 14.04.2015

Monitoring Thermal Insulation Windows and Shading Ventilation

Short Description

In 2011 a hydraulic balancing was done in the vertical single-pipe heating system. Long term success: saving of 8 % by hydraulic balancing.

Back in 2000, the facade, roof, basement and the distribution lines were insulated. New windows were installed.


Key Elements

Monitoring

 

Click here to access the monitoring data on the HIVE Database!


Thermal Insulation

In 2000: Walls, roof, basement, pipes.


Windows and Shading

In 2000: New airtight windows.


Ventilation

Ventilation of bathrooms by central roof fan.


Main Results

Successful saving of final energy by hydraulic balancing: before 101 kWh/m2a, after 93 kWh/m2a.

Certified district heating: Primary factor fp = 0,56, saving of 1.568 t CO2 per anno compared to gas (for the whole company).

Saving costs by reducing the agreed power input (heating) from 273 kW to 193 kW and by saving energy, successful saving is measured over 2 years after balancing.


Lessons learned

Additional Information

Ms Ingrid Vogler
GdW Bundesverband deutscher Wohnungs-und Immobilienunternehmen e.V.
E-mail: vogler@gdw.de
Web: www.gdw.de


Source: http://www.powerhouseeurope.eu/nc/cases_resources/case_studies/single_view/?tx_phecasestudies_pi3%5Bid%5D=227&cHash=