I do not suggest that the Box type of Cookers are better, but an attempt is needed to find a suitable material to cover the cooking pot. Increased utilization of the same would result in an all - round benefit, both in terms of cleaner environment and monetary gain, for the individual users as well as the nation. Use of solar energy would save a lot of time and money for the user and this could be effectively diverted for increased productive activities and monetary gains which means better living standards and overall prosperity. 100 million worth coal or Rs. History The history of solar cooking goes back to dim recess of antiquity.
References indicate the use of sun rays to melt chemicals and metals.
There are over 50 major designs of solar cookers, some of which are patented, and more than 100 variations. Of these, this review covers about 59 of the most important variations. The main purpose of this compilation is to present all possible major designs and their variations so as to prevent the solar cooker designer from wasting time on a design which has already been under the Sun. Though the description of the cooker is brief, accompanying diagrams would fill the void. As regards dimensions, adequate guidelines are given in the respective sections, but for concentrating type the area should preferably be more than 1.5 sq.