Upon investigating heat transfer in a small college addition my SIM
output does not indicate any heat-transfer through the roof surfaces.
There is a drop ceiling with unconditioned spaces below.
Does anyone know why this is happening?
Much thanks.
Matthew Higgins, LEED AP + ASHRAE-HBDP
Check the plenum temperature between the roof and ceiling, you may find the plenum temperature is higher than the outside temperature, it cause that there is no heat transfer through the roof surfaces.
Rongxin
2009-04-15
???? Matthew Higgins
????? 2009-04-15 12:44:39
???? equest-users
???
??? [Equest-users] Roof Heat Gain
Upon investigating heat transfer in a small college addition my SIM
output does not indicate any heat-transfer through the roof surfaces.
There is a drop ceiling with unconditioned spaces below.
Does anyone know why this is happening?
Much thanks.
--
Matthew Higgins, LEED AP + ASHRAE-HBDP
Thank you for your help. I attempted your advice and still do not see
heat-transfer through the roof surface.
I think I found the solution though, I am simulating all roofs as
pitched exterior walls on a vertex-by-vertex basis in order to achieve a
sloping rotunda. The results still aren't convincing when looking at
exterior wall heat-transfer, but if that sparks anyone's opinion I would
appreciate it.
Regards
Matthew Higgins, LEED AP + ASHRAE-HBDP