Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I'm not sure if heat transfer surfaces in EnergyPlus block the sun from both sides by default. Just to confirm it is not an issue you might want to make sure the surface normal isn't reversed no the roof. Also, even if your roofs are correct, when the sun is behind the high end of the roof but at a low angle, it would sneak in under the higher roof to hit the lower roof.
| | 2 | No.2 Revision |
I'm not sure if heat transfer surfaces in EnergyPlus block the sun from both sides by default. Just to confirm it is not an issue you might want to make sure the surface normal isn't reversed no on the roof. Also, even if your roofs are correct, when the sun is behind the high end of the roof but at a low angle, angle it would sneak in under the higher roof to hit the lower roof.
