Optimization of the solar cooker cook-top thickness to withstand temperature and load

Abstract

The research aimed to enhance cook-top performance by varying the composition of fiberglass materials, specifically resin (R), pigment (P), and hardener (H) ratios, and varying the Resin-to Hardener ratio while using one to three mat sheets. The research optimized design parameters (mat sheet quantity and resin-to-hardener ratio) to improve boiling time and structural integrity. A two mat sheet design emerged as optimal, balancing boiling speed with structural integrity. A critical minimum resin amount of 150 ml was necessary for proper fiberglass mat saturation. Hardener content significantly impacted boiling time, with a non-linear relationship favoring a 1.5 ml concentration (H1.5) for the fastest boiling time. This optimal design offered a significant production cost advantage compared to existing cook-tops (ceramic glass, previous designs) due to a lower estimated material cost per unit ($1.91 USD). Overall, the two-mat sheet cook-top design with a 150:1.5 ml resin-to-hardener ratio and an average thickness of 1.5 mm presents a promising alternative due to its faster boiling time, improved structural integrity, and cost-effective production. Future research is recommended to explore heat transfer enhancement, durability and safety testing, and a comprehensive financial model for solidifying commercial viability.