Page 32 - Designing for Zero Carbon-Volume 2_Case Studies of All-Electric Multifamily Residential Buildings

CASE STUDY NO. 1 IVY SENIOR APARTMENTS
(Opposite Page) Interior view at northeast corner exterior stair and roof above.
(Right) Diagram of the in- stalled PV system, consisting of 105 Trina Commercial mod- ules, Duomax Twin, 410 watt each, for a total installation of 43.05 kW(DC).
Solar Photovoltaic System
The solar photovoltaic system was designed to fit on the remaining roof space after the solar thermal requirements were met. Several alternative designs were proposed and specified by the design team, but supply chain problems in 2020 led to a new specification for the PV panels at the time scheduled for installation. The final installation proved to be more efficient because of the availability of a bifacial module, which has greater output and a slightly lower cost.
(Right) Drone photograph of the final installation of the so- lar panels on the roof of the Ivy Senior Apartments. In ad- dition to the solar PV panels, the 11 solar thermal panels are visible in the upper left of the photo.
18
Designing for Zero Carbon: Volume 2