WINTER SPRING/AUTUMNSUMMER [21 December][21 March/September][21 June]

InteriorWindowsClosed

Exterior Windows

Closed

InteriorWindowsOpen

Exterior Windows

Open

Interior Windows

Closed

Exterior Windows

Open

SolarHeat EnergyRecovered

PartialSun Shade

Provided

MaximumSun Shade

Provided

SolarHeat GainMaximized

ExcessHeat

Exhausted

RecoveredHeat Energy Supplied to Mechanical

Plenum

Winter Winds

BufferedExcessHeat

Exhausted