Passive House School was the certifier of the Duplex PHI Low Energy house in Sofia.
Architecture
arch. G. Nikolov, “Studio Apxe” Ltd.
Building services
eng. Zahari Bozhilov, “B-Project” Ltd.
Building physics
arch. Veselin Veselinov, “Bauhaus” Ltd.
Certifier
Passivhaus Institut Dr. Wolfgang Feist
Certified building
Low-energy house new build
Treated Floor Area according to PHPP
178 m2 and 218 m2
Construction type
masonry construction
Building type
semi-detached house
Location
Sofia, Bulgaria
Air tightness
n50 = 0.5/h
Annual heating demand
27 kWh /(m2a ) calculated according to PHPP
Heating load
14 W/m2
PE demand (non-renewable Primary Energy)
102 kWh /(m2a ) on heating installation, domestic hot water, household electricity and auxiliary electricity calculated according to PHPP
PER demand (renewable Primary Energy)
104 kWh /(m2a ) on heating installation, domestic hot water, household electricity and auxiliary electricity calculated according to PHPP
Exterior wall
Interior plaster with reinforcement fabric l 0.700 15mm
Hollow brick Wienerberger Porotherm 25 N + F 0.320 250mm
EPS grey 0.033 350mm
Exterior plaster with reinforcement fabric 0.870 15mm
U-value = 0.093 W/(m2K)
Basement floor / floor slab
Screed 1.400 50mm
reinforced concrete floor 2.300 100mm
mound of earth 0.700 100mm
Concrete foundation 2.300 300mm
XPS 0.035 300mm
U-value = 0.11 W/(m2K)
Roof
Interior plaster with reinforcement fabric 0.700 15mm
Reinforced concrete 2.300 140mm
Glaswool 0.034 460mm
U-value = 0.083 W/(m2K)
Frame
Rehau AG, Geneo PHZ
U w-value = 0.82 W/(m2K)
Glazing
SGG PLANILUX + PLANITHERM XN Ug 0.60 [W/(m²K)]
g-value 0.54
U g-value = 0.6 W/(m2K)
g -value = 54 %
Entrance door
Rehau AG, Geneo PHZ
U d-value = 0.79 W/(m2K)
Ventilation
Zehnder, ComfoAir Q 350 ERV