Citation:

Fernando Chichango, Luís Cristóvão, Gil Gabriel Mavanga, Fabião Cumbe, Jorge Nhambiu, 2025. "Energy Efficiency of Solar Water Heater from Alternative Materials", ESP Journal of Engineering & Technology Advancements  5(1): 56-66.

Abstract:

This research investigates the energy efficiency of solar water heaters constructed from alternative materials, emphasizing their relevance in regions with inadequate electrical infrastructure and low financial capacity. The study identifies and evaluates alternative materials to reduce production and installation costs, making solar heating systems more accessible. The research highlights the significant environmental and economic benefits of solar heaters, including reduced CO₂ emissions and lower operating costs compared to traditional gas and electric systems. The prototype developed demonstrates a thermal efficiency of 58%, showcasing the potential of alternative materials in sustainable energy solutions. The findings underscore the importance of continuous research and development to enhance efficiency and promote large-scale adoption of solar water heaters, contributing to the diversification of the energy matrix and environmental preservation. This work advances knowledge in the field of solar radiation utilization for water heating and provides a foundation for future research and practical applications.

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Keywords:

Energy Efficiency, Sustainability, Alternative Materials, Solar Heater.