عنوان مقاله [English]
The effective temperature is the temperature of calm and saturated air that can have, in absence of radiation, the same effect that the air in question has. This standard combines the effects of temperature and humidity. The modified effective temperature, besides the two factors of temperature and humidity, involves the effect of radiation and cooling quality of wind as well. Therefore, it is the most accurate standard recommended for study of air conditions in terms of human comfort.
Effective temperatures between 22o to 27o and wind flows with speeds between 0.15 to 1.5 m/s have been suggested as the area of comfort for human being in hot regions. The following issues are considered for determination of thermal comfort area in Abadan and Dezful:
Need for mechanical cooling and provision of shade, need for decreasing the speed of wind, need for mechanical heat in early hours of the day (during winter).
It should be noted that the maximum effective temperature of Abadan in absence of wind occurs during April to June as well as August and October. In Dezful, maximum effective temperature takes place with one month of delay compared to Abadan, namely from May until June and then in September and October.