Main Article Content
Solar still is widely used in solar desalination processes. But the productivity of the solar still is very low. To enhance the productivity of the single basin solar still many research works is being carried out up till now. In this work change the design of solar still used stepped solar still. Study the shape of the absorber surface over the distillate yield obtained the shape of the absorber surface provided in the basins of solar stills. The shape of use absorber surface plate area convex and concave increase basin water temperature causes the productivity and efficiency increase. In this work, experimental results were compared with conventional basin type still and still with wicks. That stepped solar stills can increase the distillate productivity about conventional solar stills, many reports studied the performance of stepped solar still. We are attempting to study the present status of different designs and performance of stepped solar stills enhances the productivity and efficiency of stepped solar still.