Solar Operated Low Cost Cooling Platform for Vegetable Sellers

Abstract

In many developing regions, particularly in tropical countries like India, maintaining the freshness of fruits and vegetables during transportation and sale is a constant challenge. Street vendors and small-scale sellers often lack access to refrigeration or reliable cooling systems. As a result, perishable goods tend to spoil quickly under high ambient temperatures, leading to economic losses for vendors and significant food waste. These issues also affect the nutritional quality of the produce and the overall income of local sellers. To overcome this problem, our project focuses on designing and developing a solar-operated, low-cost cooling platform that can be easily used by vegetable and fruit cart sellers. The system combines renewable solar energy with thermoelectric cooling technology to create an affordable, portable, and environmentally friendly cooling solution. At the heart of this project is the efficient use of solar power to drive a thermoelectric cooling system based on the Peltier effect. Unlike traditional cooling systems that depend on compressors and refrigerants, Thermoelectric Coolers (TECs) work on solid-state principles, meaning they have no moving parts. This makes them highly reliable, quiet, and maintenance-free. When a DC voltage is applied to the module, heat is transferred from one side to the other, causing one surface to become cold while the other side becomes hot. The cold side is used to cool the storage chamber, while the hot side is connected to an aluminium heat sink and a cooling fan to efficiently release heat into the air. Overall, the project demonstrates how simple engineering combined with renewable energy can solve real-world problems faced by small businesses. The solar-operated cooling platform is not only cost-effective but also sustainable, easy to maintain, and practical for daily use. By keeping fruits and vegetables fresher for longer, it helps reduce food spoilage, maintain product quality, and increase the earning potential of local vendors. This innovation serves as a small yet meaningful step toward supporting greener technologies, improving livelihoods, and promoting sustainable urban and rural markets.