Empirical Validation of Parameter Studies on Heat Transfer through Glazing System Using Window 6.3 Software

Heat transfer through different modes from outside environment to inside occur by conduction, convection and thermal radiation. Inclusion of automatic-advance-generation-software; „WINDOW 6.3‟ makes possible the detailed true picture of the impact of glazed material & its thickness/ pane spacing on its Thermal Transmittance. This software makes the user understand the thermal performance of glazing system without extensive knowledge of numerical methods of heat transfer. The U-value and solar heat gain coefficient are the key parameters to analyze heat transfer through window. However in the absence of solar radiations U-values is the only trigger. Therefore, an attempt has been made to carry out the study to calculate the U-value for different glazing systems with varying thickness/pane spacing in prevailing seasons. Composite climate of Chandigarh persisting in different season is considered for the study. The U-value obtained from simulation is validated using the guarded hot plate apparatus. After through analysis and even considering the economical effects, the authors recommended Double Glazed window with 25mm pane spacing to be perfectly used in Chandigarh region.