The pyramid solar still has bulky condensing and receiving surface area in compared to the conventional single slope solar still. The present study concerns experimentally with the performance enhancement of this pyramid solar still via additional performance improvers. Hollow circular copper fins array are fitted at the absorber plate in addition to PCM tank below the absorber surface to extend the water production time after the sunset. To obtain the influences of hollow circular fins and PCM on the performance of the pyramid solar still. In the experimentations, the conventional pyramid solar still, pyramid solar still with hollow circular fins, and pyramid solar still with hollow circular fins and PCM were tested at the same Egyptian weather conditions. Saline water depth of 2 cm is hold constant within the basin via compensate feed saline water tank. The experimental results show that, the conventional pyramid solar still gives maximum productivity of 4.02 L/m²/day while the hollow fins utilization enhances the productivity to 5.75 L/m²/day with 43% enhancement in the daily productivity. The PCM addition augments the productivity to 8.1 L/m²/day representing 101.5% enhancement in the daily productivity. Comparison between the present modified pyramid solar still and previous experimental and theoretical studies shows efficient performance of the present modified hollow circular fins and PCM pyramid solar still.

与常规的单斜率太阳能蒸馏器相比，金字塔太阳能蒸馏器具有大的冷凝和接收表面积。本研究实验性地仍通过附加的性能改进剂来提高此金字塔型太阳能的性能。除吸收器表面下方的PCM储水箱外，在吸收器板上还安装了空心圆形铜翅片阵列，以延长日落之后的产水时间。为了获得空心圆形散热片和PCM对金字塔式太阳能蒸馏器性能的影响。在实验中，在相同的埃及天气条件下测试了传统的金字塔型太阳能蒸馏器，带有空心圆形鳍片的金字塔型太阳能蒸馏器以及带有空心圆形鳍片和PCM的金字塔型太阳能蒸馏器。通过补偿饲料盐水水箱，盆地内2厘米的咸水深度保持恒定。实验结果表明，传统的金字塔形太阳能仍然可以提供最大的4.02 L / m的生产率。² /天，而中空鳍片的使用将生产率提高到5.75 L / m ² / day，每日生产率提高了43％。PCM的添加将生产率提高到8.1 L / m ² /天，这意味着每日生产率提高了101.5％。本发明的改进的金字塔型太阳蒸馏器与先前的实验和理论研究之间的比较表明，本发明的改进的空心圆形翅片和PCM金字塔型太阳蒸馏器的有效性能。