Efficiency of the Box-Type Solar Cooker in the Cooking of Andean Tubers in Puno

Holguino-Huarza A.; Quiñonez-Choquecota J. · Lecture Notes in Networks and Systems (2022) · DOI: 10.1007/978-3-031-11438-0_30

Resumen

This paper details the research results on the efficiency of a box-type solar cooker made of wood, with walls and floors covered with air-containing partitions and a double-glazed area where the solar energy accesses. This cooker has been tested for cooking existing tubers in the highland region of Puno, where the average annual solar radiation is 2500 kWh/m2. To evaluate the performance of the designed and constructed solar cooker, the first and second merit factor criteria have been considered, which relate to the optical efficiency of the energy loss through the cooker components, as well as the efficiency of the transfer of energy to the tubers during cooking; obtaining average values of 9.14 and 50.49 ℃m2/W respectively, which are within the suggested values for a good cooking process. Concerning the percentage, energy and exergetic efficiencies are 29.91 and 28.13 respectively, which show an adequate transfer of energy in the cooker during the cooking process of tubers. Baking is more convenient than cooking it immersed in water; since the cooking time and temperature for native potatoes and oca follow the Arrhenius equation for tuber cooking.

Instituciones: Universidad Nacional del Altiplano; Universidad Nacional de Moquegua