Handout 10
Sun Path Diagrams
γs = -20
-10
+10
ME 450
Solar Azimuth γs
+20
Solar
altitude αs
15º
Solar Time ωs
Source: University of Oregon Solar Radiation Monitoring Laboratory
http://solardat.uoregon.edu/SunChartProgram.php
Declination
δ
Solar Pathfinder
Example 4: A building with a south-facing solar collector is proposed for a site in San Luis
Obispo, to the north-northwest of an existing building as shown below. Prepare a shadow map
showing the months and times that point C on the collector will be shaded.