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I am trying to come up with a quick way to estimate how different levels of frit applied to glazing will impact a space. At this point all I am interested in is cooling load and annual energy use impacts. How wrong will it be to just use the simple glazing system inputs (U and SHGC) in EnergyPlus/OpenStudio? To put the question in another way, what, if any, are the impacts of adding frit to glazing other than reducing the SHGC?

I am trying to come up with a quick way to estimate how different levels of frit applied to glazing will impact a space. At this point all I am interested in is cooling load and annual energy use impacts. How wrong will it be to just use the simple glazing system inputs (U and SHGC) in EnergyPlus/OpenStudio? To put the question in another way, what, if any, are the impacts of adding frit to glazing other than reducing the SHGC?

I am trying to come up with a quick way to estimate how different levels of frit applied to glazing will impact a space. At this point all I am interested in is cooling load and annual energy use impacts. How wrong will it be to just use the simple glazing system inputs (U and SHGC) in EnergyPlus/OpenStudio? To put the question in another way, what, if any, are the impacts of adding frit to glazing other than reducing the SHGC?