STUDIES ON SOLAR BOX COOKER WITH THERMAL ENERGY STORAGE

In the present work, an attempt has been made to find the performance of a solar box cooker using Sunflower oil (SFO) and Mustard oil (MO) as thermal energy storage mediums. Thermal storage cum cooking unit is constructed and tested in the actual metrological conditions of Prayagraj, U.P. India (250N, 810 E). Cooker performance is obtained using stagnation test and load test. Tests are performed at different load of water. Daily energy and exergy efficiencies are obtained. It is observed that daily energy and exergy efficiencies are increasing with increasing the load. It is also observed that solar box cooker is 25% more efficient with Mustard oil as energy storage medium than that of Sunflower oil as storage medium.