کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
764251 1462889 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental and numerical study on a new multi-effect solar still with enhanced condensation surface
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Experimental and numerical study on a new multi-effect solar still with enhanced condensation surface
چکیده انگلیسی


• A novel multi-effect solar still with enhanced condensation surface is designed.
• The overall desalination efficiency and performance ratio can reach 0.91 and 1.86.
• A numerical model characterizing the heat and mass transfer process is developed.

A novel multi-effect solar desalination system with enhanced condensation surface is designed. Compared to traditional solar still, it has two main merits: (1) the application of corrugated shape stacked trays decreases the condensation resistance, thus improves the desalination performance and (2) the simultaneous heating both from the collector in the bottom and coating in the top efficiently uses the solar energy, which increases the freshwater yield. Field test is then carried out to study the temperature and freshwater yield characteristics. It is observed that the solar still can generate freshwater not only in the daytime but also in the night, with the latter taking up about 40% of the total freshwater yield. When the starting temperature is relatively high, the overall desalination efficiency and performance ratio of the equipment can reach 0.91 and 1.86, respectively. Furthermore, a numerical model characterizing the heat and mass transfer process in the solar still is developed. The good agreement between the model prediction and experimental data demonstrates the effectiveness of the proposed model. For the present solar still, a phenomenon of reverse temperature difference in the second stacked tray is emerged due to the special simultaneous heating pattern, which is also validated by the numerical model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 73, September 2013, Pages 176–185
نویسندگان
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