Table A4

Technical lifetime of prototypical nZEB elements.

Position Techn. lifetime (y) Technology Techn. lifetime (y)
Exterior wall 40 Air heat pump 20
Floor construction 40 Buffer storage 20
Flat roof construction 40 Thermal collectors 20
Windows and doors 40 Ventilation unit with heat rec. 15
External sun protection 40 Air ducts, air distribution system 30
Interior wall and elements 40 Compressor cooling 15
Kitchen and bathroom furniture 40 Free cooling 40
Electric network 25 PV − modules 25
Heat distribution network 30 PV − inverter 15
Floor heating 40 Cables for PV and Inverter 40
District heating transfer station 20 Building automation system 40

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