Performance and testing of an improved community size solar cooker

Abstract Performance and testing of an improved community size solar cooker have been carried out and compared with a hot box solar cooker with a single reflector. The cooker can meet the requirement of about 80 persons, therefore it is very suitable for hostels, temples, canteens, restaurants, etc. The economic analysis of the cooker has been carried out by considering the annual interest, maintenance cost and inflation in fuel prices and maintenance cost. The payback periods are in increasing order with respect to the fuels, firewood, coal, electricity, LPG and kerosene.