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. The primary EnergyPlus web site is found at: http://www.energyplus.gov The group web site is: http://groups.yahoo.com/group/EnergyPlus_Support/ Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site. EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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