Ashrae Glass Test
The drawing below shows how the Ashrea Standard for testing windows
creates a benchmark. The test condition uses a 1/8" piece of
glass which has a default shading coefficient of 1. All other glass assemblies
are given a shading coefficient that compares to the 1/8" glass. At the right angle, a lot of the suns energy comes into
the building. Some is reflected and some is absorbed into the
glass itself.
How to capture the suns energy that is coming into the building?