STUDY OF BOX TYPE SOLAR COOKER WITH ENERGY STORAGE MEDIUM

In the present work experiment were performed and the two different Models (Model I and Model II) of the box type solar cooker. Model I is simple one whereas fins are attached at the base of the Model II. Magnesium nitrate hexahydrate, a energy storage medium is used in the cooking pots for off sunshine hour cooking. Experiments were conducted in the premises of SHIATS, Allahabad in the month of June 2016. Two figures of merit F1 and F2 were obtained for the both models with simple cooking pot in Model I and PCM assisted cooking pot in the Model II. It is observed that maximum stagnation temperature inside the cooking chamber of Model II was more as compared to that of Model I. Exergy efficiency was also calculated for both the systems and found that the efficiency of Model II is more than Model I