this paper presents an experimental study using a Fresnel lens with a steam generator to improve the thermal performance of a conventional single-slope solar still. The traditional (SSSS) system was equipped with a Fresnel lens with a steam generator and the sun's rays were manually tracked during the experiment period Different heights were adopted between the surface of the solar still and the surface of the steam generator to obtain the appropriate height that gives optimal production. The heights that were used are (24,30,34 and 38 cm) while maintaining the depth of the water inside the basin at a height of (1) cm during the study. It was observed that the yield of distillates of the improved basin was higher than that of the conventional one, and the improvement ratio of the solar distillate with the Fresnel lens was (30.13% ) compared with the conventional distillate.t

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