Experimental Study and Economical Analysis of a Cascade Solar still Integrated with an Evacuated Tube and a Conventional Flat Plate Solar Collectors | ||
| AUT Journal of Mechanical Engineering | ||
| مقاله 2، دوره 4، شماره 3، پاییز 2020، صفحه 301-314 اصل مقاله (1.81 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajme.2019.16796.5837 | ||
| نویسندگان | ||
| Mohammad Vafaei1؛ Reza Karimi2؛ Salar Samadi Semnani2؛ Ali Arbabi3؛ Mohammad BarzgarNezhad3؛ Seyed Ehsan Shakib* 3؛ Ghodrat Ghassabi3؛ Mohammad Hossein Shafiei Mayam4 | ||
| 1Mechanical Engineering Department, Ferdowsi university of Mashhad, Mashhad, Iran | ||
| 2Mechanical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran | ||
| 3Mechanical Engineering Department, Bozorgmehr University of Qaenat, Qaenat, Iran | ||
| 4Chancellor, Bozorgmehr University of Qaenat | ||
| چکیده | ||
| Many researchers have experimentally and theoretically studied fresh water productivity in solar stills. In this regard, water preheating can play a noticeable role in enhancing the productivity of solar stills. In the present study, in order to study the effect of water preheating at the inlet of desalination system, a cascade solar still is built and integrated with two different solar collector in separated modes; an evacuated solar collector and a conventional flat plate solar collector. The mentioned solar still includes an external condenser, fin, and internal and external reflectors. It is worth noting that the embedded fins in the water passage are applied to induce hot spots and increase the evaporation rate and fresh water. The experiments were performed in August 2015 and summer 2017. The results showed that the combined desalination system with conventional flat plate collector and evacuated tube collector enhace productivity %60 and %13, respectively. In addition, efficiency of solar still in combination with conventional flat plate collector and evacuated tube collector was %81.8 and %59.1, respectively. The price of produced fresh water of solar still with conventional collector obtained 0.035 $/lit and for solar still with evacuated tube collector was 0.045 $/lit. | ||
| کلیدواژهها | ||
| Solar still؛ Flat plate solar collector؛ Evacuated tube solar collector؛ Combined system | ||
| مراجع | ||
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