The study aimed to enhance the heat transfer efficiency between saline water and the absorber in a Tubular Solar Still (TSS). This improvement was achieved by exploring various absorber designs, including flat and finned configurations. The research compared the performance of three systems: Conventional Solar Stills (CSS), the Tubular Solar Still (TSS), and a modified version with finned absorbers, known as Finned Tubular Solar Still (FTSS). To facilitate slow upward movement of feed water through the absorber, jute wick materials were employed as a covering for the finned absorbers. Furthermore, the internal sides of the TSS were equipped with reflective mirrors to evaluate their impact on performance. In a bid to further enhance the FTSS's capabilities, Phase Change Materials (PCMs) mixed with copper oxide nano particles were incorporated.