16. 4″ face brick, air space, 2″ polystyrene board insulation, moisture barrier and wall sheathing, 6″ metal framing, 5/8″ gypsum board
Roof R value
Floor R value
Window to Wall Ratio
Window U Value
Double pane 1″ thick insulating units with low-e coating on outside glass and 0.5″ air gap. Aluminum frames with thermal break.
MECHANICAL HEATING AND COOLING
Ground source heat pump with total energy recovery of building exhaust air and variable speed ground loop pumping.
Energy recovery ventilator with total energy recovery effectiveness of 70%. Outdoor air from ERV is ducted to the return of the individual ground source heat pumps. Low return within each zone increases outdoor air delivery effectiveness (20% less OA).
LED and fluorescent lighting with daylight and stepped dimming and occupancy sensors.
USER LOAD REDUCTION STRATEGIES
Programmed tight control of common are occupancy sensors to reduced fixture on-hours. Installed occupancy-controlled power strips. Encouraged employees to shutoff computers at end of day. Also encouraged employees to adjust interior shading devices at appropriate times to utilize the maximum amount of daylight. Programmed permanent setback mode in unused offices. Increased unoccupied mode for heat pumps to better match hours of employee occupancy.