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Hi, I need to use window heat balance in Energy plus. In engineering reference there are : 1)different heat balance methods and algorithms given for window, shading, window with gaps,frames,etc. and 2)another heat balance calculation using equivalent fenestration method which uses equivalent layer method for all window and shading layers. Are both methods used at same time for heat balance calculation or the methods are chosen between one of the two depending on the input provided? If they are not used at same time, which model is more feasible based on the data about window and shading we have from window manufacturer and which is better in terms of accuracy ? I'd really appreciate it, if someone could answer my question.

Hi, I need to use window heat balance in Energy plus. In engineering reference there are : 1)different heat balance methods and algorithms given for window, shading, window with gaps,frames,etc. and 2)another heat balance calculation using equivalent fenestration method which uses equivalent layer method for all window and shading layers. Are both methods used at same time for heat balance calculation or the methods are chosen between one of the two depending on the input provided? If they are not used at same time, which model is more feasible based on the data about window and shading we have from window manufacturer and which is better in terms of accuracy ? I'd really appreciate it, if someone could answer my question.