University of Tehran Journal of Solar Energy Research 2588-3097 10 2 2025 04 01 An Investigation for the Best-Performing Design of Box-Type Solar Cooker for Commercialisation: A Comprehensive Review 2275 2315 103917 10.22059/jser.2025.396579.1579 EN Sanyukta Palatkar Department of Ocean Engineering and Naval Architecture, Indian Institute of Technology Kharagpur, India Vikrant Pradip Katekar Centre for Technology Alternatives for Rural Areas, Indian Institute of Technology Bombay, Powai, Mumbai, India Journal Article 2025 06 03 Solar energy is the cleanest way of cooking food using a solar cooker. But it is inefficient, takes a long time to cook, relies on the weather, doesn't transmit heat well, has a restricted temperature range, is bulky, degrades with time, needs maintenance, and is not very popular with users. Numerous researchers devised new ways to make box-shaped solar cookers to overcome these difficulties and tested them. Henceforth, it is hard to find the latest, most energy-efficient design of a box-shaped solar cooker so that it can be improved further to bring it to the commercial level. This work presents a state-of-the-art review of box-type solar cookers to find the most energy-efficient design. Based on this review, a box-type solar cooker with energy storage is investigated as the best-performing design with figures of merit F1=0.23 and F2=0.27. The size of the absorber plate is the most crucial factor in figuring out how much a solar cooker will cost. To deal with this difficulty, a regression equation has been estimated to be "Absorber area (sq. m) = -1.134 + 0.00227 Max temperature (°C) + 0.0313 Cooking mass (kg) + 0.001541 Solar Irradiation (W per sq. m)." https://jser.ut.ac.ir/article_103917_10b08c6a4e3f9d7322477ae4e7c29abf.pdf