The thermal insulation performance of double-sided glass Windows is directly reflected by the value of heat transfer coefficient K. The lower the heat transfer coefficient is, the less heat dissipation is, the better the thermal insulation performance of Windows is. Therefore, this experiment mainly explores the double-sided glass spacing combination with the minimum heat transfer coefficient under the existing technical conditions. Based on the study of the relationship between the spacing combination and the heat transfer coefficient, the optimal spacing combination satisfying the optimal thermal insulation performance was proposed to complete the study. After the study of combination, the orientation problem of interference 1 and edges 2, namely the placement direction problem in the process of double-sided glass installation, was studied, and the influence of different orientations on the thermal insulation performance of Windows was studied.
After the final spacing combination is determined, the optimal orientation is further explored to further improve the insulation performance of Windows and provide a basis for the installation of Windows in the construction process. According to the previous experimental data, when the distance between the two glasses is below 10mm, the distance and thermal resistance are almost in a linear relationship. When the distance between two glasses is between 10mm and 30mm, the relation between the distance and thermal resistance is curved. When the distance exceeds 30mm, the thermal resistance of the air layer increases very slowly due to the combined effect of convection and radiation heat exchange.