Abstract
A new humidification -dehumidification seawater desalination system combined with the solar chimney is proposed in the present study. The proposed system consists of the solar collectors, two-tower solar chimney updraft wind system and the sea water condensers. Mathematical models are built to analyze the solar collector, the chimney and the condensers respectively. The performance of the system is simulated. The monthly fresh water generation is calculated. It is found from the study that, the system with the similar dimension of the Spanish solar chimney power plant prototype can averagely generate fresh water of 1.51 kg/h, when the average solar radiation is 598.66 MJ/m2.