Thermo-exergo-economic analysis of double slope solar still augmented with ferrite ring magnets and GI sheet
Manoj Kumar Dubey, Dhananjay R. Mishra
Abstract
ABSTRACT Rapid growth in population is enhancing the requirement of the huge amount of potable water at an affordable price. The paper consists of a comparative economic study based on numerical and experimental analysis. The effect of magnetization has been presented on the performance of double slope solar still (2 m × 1 m basin area), longitudinally oriented in an east-west direction, with 15° top cover inclination. Permanent ferrite ring magnets were evenly distributed in the basin water and a blackened galvanized iron sheet is placed over them for uniform distribution of the magnetic field. An identical still, without this arrangement is also run for comparison. Experiments have been carried out at the geographical condition of Jaypee University of Engineering and Technology, Guna (latitude: 24.4348°N, longitude: 77.1606°E, India). Theoretical evaluation of the experimental result has been carried out with the help of the Kumar and Tiwari model. An increase of, 171.83% in the rate of heat transfer, 57.58% in exergy efficiency, 31.13% in distillate yield, 21.77% in evaporative heat transfer coefficient, 16.26% in total heat transfer coefficient, and 22.64% in experimental efficiency is seen. Payback period analysis is also done. It inferred that magnetization improves the performance of the still considerably.