The present work deals with one of the new techniques of saline water desalination. It is based on the humidification of ambient air and then dehumidification of this humid air to produce fresh water. Solar ponds as a source of hot saline water are well adapted for coupling with the unit. A computer programs were designed to investigate the performance characteristics at different operating conditions. The important design descriptions and the operating parameters of such units are identified. The effects of the operating parameters on the unit performance characteristics are studied. The productivities obtained from simple and modified models are qualitatively compared with the experimental values. Due to the simplicity of this technique, it may be a good candidate and is recommended if one looks for a solution for fresh water needs of small communities living in rural areas.