Abstract: Growing shortage of water resources threatens the survival and development of mankind. Dew water collection, as an approach of water collection with high efficiency and energy saving performance yet no pollution, has been used for a long time due to its feasibility and superiority. Gulf region is a main study area for dew water collection because of its high temperature and humidity. According to features of the gulf region and in association with EES(engineering equation solver) software, the maximum condensation rate is determined under meteorological conditions of relative humidity(RH) 90%, wind speed (v) 8 m/s, and condenser’s sectional area (A) 100 m². The optimum values of parameters of condenser under minimum power supply are also obtained as follows: condenser diameter (D) 1 m, heat transfer coefficient (U) 1.6, elbow number (N) 50, and superficial area (S) 1 800 m². The research results could offer reference for dew water collection by condenser in Gulf region.

Key words: dew water collection, gulf region, condensation rate, engineering parameters, engineering equation solver