Simulation Thermal Analysis of Double Glazed Window with Interpane Chik Blind

Abstract

Windows are designed primarily to control the indoor climate and also to provide proper ventilation. The most important objective is achieved by controlling the heat flow through the window from inside to outside in winter & from outside to inside in summer. Window solar gain has a strong influence on the building energy consumption and peak cooling load. Double glazed window are known to prevent the entry of solar gain to inside the room. Shading systems such as Venetian blinds, louver shades, draperies, bamboo blind, chik blind etc. enhances the control of solar gain through windows. In this paper the authors discussed the thermal performance of a double-glazed window with inter-pane shading device using LBNL research software WINDOWS 6. Though this type of glazing system had already been studied for colder climatic conditions in the west, due to the unavailability of literature on local climatic conditions its use in tropical countries like India is limited. A parametric study for climatic conditions of an Indian city, Chandigarh had been made to give an insight to the thermal performance of glazing systems. In this study the effect of different parameters such as types of glazing systems (with and without shading for double glazed), pane to pane spacing (20mm, 30mm and 40mm), type of shading devices (venetian blind & chik blind) the condition of blind (no shade, open, closed) and the climatic conditions of Chandigarh for all the climate season i.e. Hot and Dry, Hot and Humid, Cold and Dry on the Thermal transmittance (U-value) is investigated.