A study of vaulted roof assisted evaporative cooling channel for natural cooling of 1-floor buildings

The application of evaporative cooling technique in a 1-floor stand-alone house with vaulted roof, in order to meet the required thermal needs of inhabitants and natural cooling of the interior space, has been studied in this paper. In order to investigate the capability of the system to meet thermal comfort conditions in different environmental conditions, the performance of the system has been numerically investigated for wide ranges of wind velocities, ambient air temperatures and relative humidity values. The results indicate that when the wind velocity is higher than 0.4 m/s, the air inside the building will be ventilated efficiently. In addition, as the wind velocity or the ambient air temperature increases, thermal comfort is achieved at lower values of relative humidity. The maximum allowable values for relative humidity of the ambient air to meet thermal comfort conditions are calculated based on the adaptive thermal comfort standards, and the application of the proposed system in stand-alone buildings for the centers of the provinces of Iran is investigated.