First and Second Law Efficiencies in the Cooking Process of Eggplant using a Solar Cooker Box-Type

Abstract

In this work an experimental procedure and the determination of first and second law efficiencies for the cooking process of eggplant using a solar cooker box-type are shown. The eggplant was modelled as cylinder. In the experimental process a NI Compact Field Point was used as acquisition data system which allows measure temperatures in simultaneous form. The temperatures evolution was defined using thermocouples located at water, surface and central point of the eggplant. After to measure the evolution temperatures in a solar cooker thermodynamics principles were applied to determine the first and second laws. The results obtained indicates what is the numerical difference between the first and second laws in the cooking process of eggplant. The results allow to understand how the inlet energy that impacts on solar cooker is converted in energy useful in the cooking process of eggplant. This work be used in future designs of solar cookers.

Novel mixed solar cooker: Experimental, energy, exergy, and economic analysis

“…Generally, the utilization and performance of solar cookers are restricted as cooking temperatures do not go beyond 130°C. [23][24][25] Further thermal efficiency is not high and cooking time is drawn out. However, it is worth noting that many stove designs utilizing vacuum tubes, as mentioned in El Moussaoui et al 18 and Abd-Elhady et al, 26 lack a closed cooking chamber.…”

“…Generally, the utilization and performance of solar cookers are restricted as cooking temperatures do not go beyond 130°C 23–25 . Further thermal efficiency is not high and cooking time is drawn out.…”

Comprehensive Analysis of Thermal Performance of Solar Hot Case Based on Solar Power Energy

“…This predicament exacerbates deforestation, leading to elevated greenhouse gas levels [3]. To address the pressing issue of deforestation, box-style solar cookers have been recommended for adoption, particularly in regions like Africa [4][5][6][7][8][9]. Nonetheless, the effectiveness of these cookers faces constraints, such as a limited maximum cooking temperature of 140°C [5][6][7][8][9], thermal efficiencies below 54% [10][11], cooking times exceeding 120 minutes [12], usage outside of homes [1,10], and the requirement for intervention during cooking to track the sun's position [1].…”

“…To address the pressing issue of deforestation, box-style solar cookers have been recommended for adoption, particularly in regions like Africa [4][5][6][7][8][9]. Nonetheless, the effectiveness of these cookers faces constraints, such as a limited maximum cooking temperature of 140°C [5][6][7][8][9], thermal efficiencies below 54% [10][11], cooking times exceeding 120 minutes [12], usage outside of homes [1,10], and the requirement for intervention during cooking to track the sun's position [1]. Consequently, numerous efforts have been made in the literature to harness photovoltaic energy in these cookers, aiming to enhance the performance of box ovens [10,[13][14][15][16][17][18].…”