Comfort Evaluation in Urban Open Spaces Based on Wind Comfort Criteria,Case Study: Isfahan

Wind is one of the climate parameters that architecture and environmental designer have paid attention to itfrom past time till now. In some cases, wind flow in the urban open space is useful and it help to the natural ventilation and it causes improve human comfort and reduce energy consumption. On other hands in some cases wind flow causes reduce human comfort in urban open spaces. So in each climate architectures and other designer can decide how wind flow should control in the urban open spaces according to the wind comfort. In this article we want according to the Isfahan climate dates and statistical calculations and compared with wind comfort criteria, find the mount of the wind comfort criteria in the urban open spaces in Isfahan. So in this study three criteria consist of “Wind Chill Factor”, “Beaufort Factor” and “Penwarden Factor” was used. The resultsof this study shown that wind flow just in the January cans reduce human comfort in open spaces and in the design of these spaces have to reduce the amount of the wind flow in this month. In other hand, in the June, July, August months, if the wind flow increase till 6m/s, the human comfort can improve. Wind flow in other month of year has favorable position and it can make human comfort so it is better that the wind speed keeps in the open space and street in this months.