Akademik Veri Yönetim Sistemi
Uluslararası Katılımlı 23. Isı Bilimi ve Tekniği Kongresi, Gaziantep, Türkiye, 8 - 10 Eylül 2021, cilt.1, ss.1957-1962
Bricks play an important role in the thermal performance of buildings, especially as an envelope structure element. These elements are primarily used for infilling purposes and are conventionally produced in a hollowed manner for high thermal resistance concerns. Such thermal resistance of a brick is contributed by the low thermal conductivity of air if it is guaranteed as quiescent air. Nevertheless, an occurrence of temperature differences between the brick faces acts as the driving force to create a natural convection flow inside the holes. So, any attempt to weaken the strength of the natural convection inside the holes may increase the brick's thermal resistance. For this purpose, hexagonal holes preferred to test as an alternative for the masonry bricks configuration. As common sense, it is recognized that natural convection heat transfer is very sensitive to boundary conditions and wall orientations. Such a hole having an inclined wall is expected to oppose the buoyant force. The buoyant oppose wall arrangement potentially reduces the convection strength and so creates comparatively higher thermal resistance. In the presented work, the equivalent thermal resistances of the brick having hexagonal holes were obtained for several end to end temperature differences (so for corresponding heat rates). The results were compared with the result of the previously investigated works for the 45° tilted square holes brick and the standard masonry brick of rectangular holes. It is concluded that the hexagon holed brick shows the worst thermal performance of thermal resistivity among the other two configurations.