Excessive solar gains

asked 2019-07-16 10:28:44 -0500

Gregory gravatar image

updated 2019-07-16 18:24:54 -0500

Hi everyone,

I am performing a dynamic simulation of a building in Energyplus.

I am strungling with excessive solar gains when windows are directly exposed to the sun. The temperature calibration of my building is quite reasonable except some peaks hours and I am quite sure that this is due to excessive solar gains when windows are directly exposed to the sun.

For example, East-oriented windows have excessive solar gains in the morning, South-oriented windows during noon and West-oriented windows in the afternoon.

I verified my weather file, but all the parameters are fine. So, it has to due something with the window definition in Energyplus. I am using WindowMaterial:SimpleGlazingSystem. Does anybody has an idea how I can compress those peaks to reasonable values without changing the Solar Heat Gain Coefficiƫnt, because these are given in the as-build plans AND will effect the rest of my simulation.

Kind regards.

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How do you know if the solar heat gain is excessive?

Luis Lara gravatar imageLuis Lara ( 2019-07-16 14:36:21 -0500 )edit

Do your building have site shading? And does the weather file you picked have reliable cloud coverage data?

mdahlhausen gravatar imagemdahlhausen ( 2019-07-18 10:50:45 -0500 )edit