An Experimental Investigation of Thermal Performance of an Octagonal Box Type Solar Cooker. Smart Technologies for Energy, Environment and Sustainable Development. Lecture Notes on Multidisciplinary Industrial Engineering.

Abstract

The octagonal box type solar cooker works on the principle of concentrat- ing the solar radiation and converting it into heat. The solar radiations concentrate on the targeted area so that the cooking temperature increases at very fast rate. Mod- ified cooker contain eight reflective inclined sides. The copper plate at the bottom maintains a constant temperature inside the cooker. After rigorous experimentation, modified cooker gives first figure of merit as 0.3027 and second figure of merit as 0.607. Cooking power is 19.767 W. Standard cooking power is 49.639 W. The effi- ciency of the proposed octagonal solar cooker is 38.36%. As compared to box type solar cooker available in market, modified octagonal cooker has 23.52% more cook- ing power, 26.55% increase in efficiency. The modified solar cooker comes under the “A grade” class as per guidelines laid down by the Bureau of Indian Standard. This paper describes this work in the concise form. Keywords