Abstract The present study examined the performance of different modifications of identical solar stills (SSs) with heating/cooling and nanofluid. The first system is SS with thermoelectric heating (TEH) in the basin. The second system used TEH in the basin and loaded with nanofluid. The third SS used TEH as well as nanofluid and equipped with a double-slope symmetric external condenser that one side of it cooled by film of water and the other side with thermoelectric. Silver nanoparticle due to well-known characteristics in water disinfection was used with 0.03% weight. A series of experiment performed during one week in June 2019. Findings revealed that the daily yield and efficiency for SS with nanofluid/condenser and with nanofluid without condenser compared with SS without nanofluid/condenser improved by about 100.5%, 26.7% and 50.8%, 30.6% respectively. The highest productivity obtained by SS with nanofluid/condenser with 7760 cc/m2/day where the productivity from the glass-side increase by about 16.5% and 47.6% compared to SS with nanofluid without condenser and SS without nanofluid/condenser. Also it revealed that the contribution of external condenser in productivity is 26.3% of total productivity. Findings showed that the productivity of thermoelectric-side of condenser is more than 5 times higher than water film-side.

中文翻译：

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一种可再生能源驱动的热电利用太阳能蒸馏器，带有银/纳米流体负载的外部冷凝器，可同时进行水消毒和海水淡化

摘要 本研究通过加热/冷却和纳米流体检查了相同太阳能蒸馏器 (SS) 的不同修改的性能。第一个系统是在盆中带有热电加热 (TEH) 的 SS。第二个系统在盆地中使用 TEH 并装载纳米流体。第三个 SS 使用 TEH 以及纳米流体，并配备双斜面对称外部冷凝器，其一侧通过水膜冷却，另一侧通过热电冷却。由于众所周知的水消毒特性，银纳米颗粒以 0.03% 的重量使用。在 2019 年 6 月的一周内进行了一系列实验。 结果表明，与不使用纳米流体/冷凝器的 SS 相比，使用纳米流体/冷凝器和使用纳米流体的 SS 的日产量和效率提高了约 100.5%、26.7% 和 50.8%， 30. 分别为 6%。使用纳米流体/冷凝器的 SS 获得的最高生产率为 7760 cc/m2/天，与使用不带冷凝器的纳米流体的 SS 和不带纳米流体/冷凝器的 SS 相比，玻璃侧的生产率分别增加了约 16.5% 和 47.6%。还显示外置冷凝器对生产率的贡献为总生产率的26.3%。结果表明，冷凝器热电侧的生产率比水膜侧高5倍以上。占总生产力的 3%。结果表明，冷凝器热电侧的生产率比水膜侧高5倍以上。占总生产力的 3%。结果表明，冷凝器热电侧的生产率比水膜侧高5倍以上。