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Re: [EnergyPlus_Support] Surface outside tempearture vs solar radiation.



The outside surface temperature is also very sensitive to the surface heat convection coefficient.
This coefficient depends on local wind speed.

Fred Buhl

Justin Wong wrote:
Hi,

What weather file are you using? If you use typical weather file, it may 
not be representative with actual field measurement

Justin

finadz82 wrote:
  
Hi..

I tried to simulate a small office building in a hot humid country
Malaysia with intense solar radiation. The longitudinal/glass area of
the building is facing east. To validate the result from E+ i compared
the data with field measurement. When i simulate the building, i found
that E+ gave much smaller surface outside temperature (roof and
window) reading compare to the field measurement result. Eg: Roof
surface outside temperature at 12 pm measured was 58 C but simulated
was only 35 C. It seems like the solar radiation did not give impact
to the roof/window temperature in my simulation but the result of wall
outside surface temperature is resaonable with my field measurement.
Could anyone explain the heat transfer and temperature of the
roof/window? Material of the roof is metal roofing and window is 6mm
single clear glass.

 
    
  
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