Öz
Most of the energy in buildings is used for heating energy needs. Among the factors affecting the heating energy need are the building shell properties and the orientation characteristics of the buildings. The building shell consists of opaque and transparent (window and wall) surfaces. By making use of the sun's rays coming to these surfaces, the heating energy needs of the buildings can be reduced. At the same time, the orientation of the buildings according to the environmental conditions of the region is also effective in solar energy gain. Therefore, in this study, the relationship between the window/wall ratios (WWR), orientation properties and solar energy gain of the buildings was investigated. Within the scope of the study, solar energy gains were calculated for alternatives with different orientation and WWR. While making the calculations, the calculation method in TSE 825 was used. The obtained results were presented by making comparisons with tables and graphics. With this study, it is aimed to present a framework that can help produce optimum solutions by considering the solar energy gains according to the orientation and WWR of the buildings during the design phase.