INFLUENCE OF THE COATINGS ON THE THERMAL PERFORMANCE OF INSULATING GLASS UNITS ВЛИЯНИЕ НА ПОКРИТИЯТА ВЪРХУ ТОПЛИННИТЕ ХАРАКТЕРИСТИКИ НА СТЪКЛОПАКЕТИ

Abstract

Abstract: A mathematical model of 3D conjugated heat transfer at insulating glass units (IGU) is composed and applied for numerical calculations by computational fluid dynamic technique with ANSYS. Temperature field in glass panes and temperature, pressure and velocity fields in gas space are calculated for several variants of flat double glazed IGU: uncoated glass panes; low emissivity coating on inner pane and uncoated outer glass pane, and solar control coating on outer pane and uncoated inner glass pane. The numerical calculations are made for winter and spring conditions in order to validate the models and to analyze the coatings influence on thermal behaviour of IGU