Advanced Fabricated Setup for Day Long Production of Hot Water by Fresnel Lens

This work has been aimed to collect the solar energy source from Fresnel lens and utilize it to produce hot water or steam. The setup consists of a large spot Fresnel lens which concentrates the sun's rays into a one-centimeter square spot onto a copper tube with the temperature reaching around 200 oC. This concentrated heat is focussed on copper tube absorber to heat the water, the hot water then can be used for a variety of purposes, like sterilize utensils or different equipment in hospitals, restaurants etc and for cooking purposes. The setup also consists of a solar tracking system consisting of light resistive sensors and a microcontroller with a relay setup that controls the movement of the frame. The experiment has been conducted from morning 9 am to 5 pm, with ever-changing hours the sun was automatically tracked with the help of a solar tracking system. From the experimental results, it has been observed that the maximum temperature of water obtained was 81 oC at 13:00 hours