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

["finadz82" <finadz82@xxxxxxxxx>]

Mr Justin,

I'm using weather data in E+ but i've modified the data on dry bulb 
temperature, dew point,rel. humidity, atmos. pressure, direct 
radiation, wind speed and direction according to the field 
mesaurement during experimental work.

> 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.
> >
> >  
> 
> -- 
> Justin Wong
>    PhD Candidate
>    Faculty of the Built Environment
>    University of New South Wales
>    UNSW SYDNEY, NSW  2052  Australia
>    Room 6007, West Wing, Red Centre
> (T)+61 2 9385 6373 - (M)+61 424 036 249
> justinw@...
>



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