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
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
