EVALUATION OF NATURAL VENTILATION IN A CORRIDOR DOUBLE SKIN FACADE (CASE STUDY OFFICE BUILDING IN SHIRAZ)

One of the main issues in designing office buildings is to maintain thermal comfort in indoor environment by using passive design strategies. Double skin façade is a key idea in energy efficient building concept and is commonly used in office buildings. Proper skin of building results in optimize natural light and ventilation in cavity space of double skin façade and indoor spaces. In this research a corridor double skin façade of an office building in warm and arid climate of Shiraz has been modeled to evaluate parameters affecting natural ventilation. Air flow velocity, temperature, circulation and Distribution have been investigated in cavity and indoor space of building in different design condition of corridor façade to determine optimum size and position of openings and width of cavity. Results shows that by dividing length of corridor to specific size there will be better flow distribution and velocity. Subtracting length of corridor less than specified limit will not have positive effect and in some condition result in poor ventilation condition.