From old to renovated!
Build in 1967 at 18 stories and 80,000 square feet, the Ken Soble Tower had been in a state of deterioration for some time as the oldest high-rise multi-residential building in Hamilton, Ontario, Canada. The building had significant challenges including a deteriorating envelope, lack of insulation, inadequate ventilation, and lack of thermal controls.
The goal was to retrofit the building to achieve EnerPHit certification, a branch of the Passive House (PassivHaus) standard designed specifically for retrofits.
The building will provide a comfortable indoor climate for its occupants at the low-energy demand. At its peak, the total energy needed to heat or cool each unit will be equal to the energy needed to run 3 incandescent light bulbs (100 W).
Passive resilience to extreme conditions!
ERA Architects stated: “The building demonstrates passive resilience to extreme conditions: In case of failure of active systems, the building will stay warm in winter for up to two days (compared to 2 hours in a typical building) and below dangerous heat levels in summer for up to four days (compared to half a day in a typical building).”
And the key figures before and after renovation are amazing!
-Annual heating energy requirement: Before 250 kWh/m2 to 24.9 kWh/m2
-Annual cooling energy requirement: Before none to 1.9 kWh/m2
-Annual primary energy requirement: Before 650 kWh/m2 to 130 kWh/m2
-Airtightness: Before 5.41 ACH at 50Pa to 0.6 ACH at 50Pa
Image by ERA Architects.
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