Solar Heat Gain Through Glass

Calculate instantaneous solar heat gain through fenestration based on orientation, shading, and glass properties.

Fenestration area.
ft²
Solar Heat Gain Coefficient (0.2-0.8).
Peak solar intensity: S=250, SE/SW=220, E/W=200, N=50 BTU/hr·ft².
BTU/hr·ft²
Internal shading: None=1.0, Venetian=0.6, Roller=0.4.
Reduction from overhangs/fins (0-1, 0=fully shaded).

Results

Maximum Solar Gain-BTU/hr
Shaded Solar Gain-BTU/hr
Peak Cooling Load-tons
Effective SHGC-
References: ASHRAE Fundamentals Chapter 15: Fenestration; ASHRAE Fundamentals Chapter 18: Cooling Load Calculations