Christchurch – Strowan
eHaus Euro - Certified Passive House Plus (2017)
This two story modern residence in the middle of Christchurch replaces the families home that was damaged in the Canterbury earthquakes.
Design Components
Floor – EPS raft slab – 70mm EPS VH grade rib insulation 100mm wide, 300mm pods U-value = 0.34 W/(m2K)
Wall – SIP Panels 215mm with 50mm insulation in service cavity U-value = 0.155 W/(m2K)
Roof – SIP panels 265mm with 90mm in service cavity U-value = 0.13 W/(m2K)
Window Joinery Frame – ThermaDura, NatureLine 90 Laminated Siberian Larch U w-value = 0.94 W/(m2K)
Glazing – Sanco Silverstar TRIII E 4:/20AR/4:/20AR/4 ACS plus spacer U g-value = 0.5 W/(m2K) g -value = 53 %
Ventilation – Zehnder Q350 MHRV
Hot Water – External Heat Pump with 300 Litre storage
Heating/Cooling – 2 Heat Pumps
Power Generation – 7kW solar PV system
Performance Specifications
Heating Demand: 22.1 kWh/m2/yr
Heating load 9.3W/m2
Frequency of overheating 1%
TFA: 198.1 m2
Form Factor: 3.4
Air Leakage@50Pa: 0.51 ACH
PER demand: 31 kWh/m2/yr
Renewable Energy Generation: 46 kWh/m2/yr