Date of Publication :7th December 2016

Abstract: In this paper, we have discussed the design of a solar cooker that uses heated air for contact less cooking using a compound parabolic trough collector. We have modified the existing design of compound parabolic collector using ray tracing method, and redesigned the angular position for better heat collection efficiency. The collected heat will heat up the air present inside the cooking chamber and the sealed airtight mechanism maintains additional pressure inside the chamber to increase the boiling point of fluids present in the foods to be cooked. We have coated an aluminium sheet with carbon nanoparticles prepared from specially processed carbon shoot which ensures excellent heat trapping. The entire model is economic as it is low cost and the adjustable angular placing of the reflectors ensures that it can be used in any latitude or longitude. We have also conducted a comparative study of existing solar cookers and concluded that the new design is 34% more efficient then any other existing solar cooker. Instead of aluminium reflectors, float-glass mirrors have been used to increase the reflection of solar radiation. The cooker is much healthier as it utilises the concept of roasting instead of frying.

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