Sun-Powered Refrigerator: Design, Testing, and Limitations

The availability of vaccines, medicines, and perishable goods in remote or off-grid areas remains a formidable challenge. Integrating solar photovoltaic (PV) systems with refrigeration technology has emerged as a promising solution to address this critical need. This paper comprehensively explores a sun-powered refrigerator capable of maintaining temperatures between +2 degrees C and -20 degrees C, essential for preserving vaccines, medicines and perishable products in remote areas. A solar PV panel is mounted on the refrigerator's top surface, harnessing renewable energy to power the refrigerator. This solution also enhances portability, making it well-suited to remote and resource-constrained regions. The results of initial experimental tests aim at validating feasibility and efficacy of the sun-powered refrigerator and assessing the refrigerator's performance under varying operating conditions. Detailed insights into the design, construction and limitations are provided, shedding light on its potential as a sustainable solution for vaccines and medicines storage in underserved areas. Solar availability, storage capacity, and backup power sources are carefully examined to provide a comprehensive understanding of the practical considerations and constraints involved. This paper contributes to scientific literature on renewable energy applications and aims to inform policymakers, healthcare practitioners, and technology developers about the potential and challenges of solar-powered refrigeration solutions for resource-limited areas.