Evaluation of the thermal performance of the geometry of the domed roof

Abstract

Domed roofs were used for mulching roofs of buildings in Iraq and other countries for them adequate thermal performance. The aim of this research is to evaluate the thermal performance to determine the most suitable roof configuration, reduce indoor air temperature and be useful through hot seasons, taking into account all factors such as radiative heat transfer, solar radiation, wind moving around as well as openings in the dome. Field measurements and research on the performance of the domes were carried out in the city of Baghdad using a computer energy simulation program (Ecotect). Results showed that thermal performance of a domed building was examined is better than the building with a flat roof and keeps the indoor air comparatively cool during the summer. Domed formation has a clear effect on the quantity of received and absorbed solar radiation and the intensity of wind movement around the dome, as well as the negative air flow inside the building. It's good for human comfort.