نوع مقاله : مقاله پژوهشی (کاربردی)
نویسندگان
1 دانشجوی بین الملل کارشناسی ارشد مهندسی مکانیک - بخش انرژیهای تجدید پذیر، دانشگاه یزد، ایران.
2 عضو هیئت علمی، استاد، گروه فنی و مهندسی، دانشکده مهندسی مکانیک، بخش تبدیل انرژی، دانشگاه یزد، ایران.
3 عضو هیئت علمی، استادیار، گروه فنی و مهندسی، دانشکده مهندسی مکانیک، بخش تبدیل انرژی، دانشگاه یزد، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Today, solar desalination is one of the promising solutions for the problem of drinking water shortage, mainly in remote and low-population areas. In the present research, a solar still with passive external condensers was designed. To store the thermal energy in the basin of this solar still, paraffin wax was used in copper tubes as phase change materials. To compare and investigate the performance of the proposed solar still, a conventional solar still with the same specifications and dimensions was built and tested. Both solar stills were investigated on the days of 28 April, 5 and 9 May. The results of the experiments showed that the performance of the proposed solar still was better than the conventional solar still; the highest produced fresh water was 3.55 and 3.04 lit/m2 day, respectively, for the proposed and conventional solar stills, which showed a 17% increase in productivity per day. It is clear from past research that the condenser increases the temperature difference between the glass covers and the saltwater of the basin, but causes the temperature of the saltwater basin to decrease. However, in this research, in addition to the increase in the temperature difference between the glass cover and salt water, the amount of salt water also increased, and this trend of increasing temperature was observed until the end of the day in all three experiments, which shows the effective performance of paraffin wax in the basin of solar still.
کلیدواژهها [English]