화학공학소재연구정보센터
Desalination, Vol.459, 34-45, 2019
Comparative analysis and experimental evaluation of single slope solar still augmented with permanent magnets and conventional solar still
Experimental and theoretical evaluation of conventional solar still (CSS) and CSS augmented with permanent ferrite ring magnets (MSS) have been reported. Mathematical model proposed by Kumar & Tiwari has been used for the evaluation of internal heat transfer coefficients, internal efficiency, exergy efficiency, and exergy destruction. The average partial pressure difference between basin water and inner condensing cover surface for MSS has been found to be 77.99% higher than CSS when experiments were carried out for 13 h. The maximum value of evaporative heat transfer coefficient of MSS leads over the CSS by 28.65% at 13:00 h. The distillate yield recorded during the experimentation for MSS is 49.22% higher as compared to CSS. It seems that the magnetization of water has enhanced the overall internal efficiency and exergy efficiency of MSS over CSS by 49.17% and 110.26% respectively. In MSS the presence of permanent magnets has remarkably reduced the exergy destruction in the basin area. Augmentation of magnets with the CSS has significantly enhanced the distillate output of MSS. It has been found that the theoretical results obtained from Kumar & Tiwari numerical model are in good agreement with the experimental results obtained from CSS and MSS.