Development of a Practical and Sustainable Meat Drying System Using Solar Energy

School of Agricultural Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand

^* Corresponding author: wanvisa.sri@sut.ac.th, bsamart@sut.ac.th

Abstract

This research presents the development of a practical and sustainable meat drying system powered by solar energy, aimed at improving the quality and safety of sun-dried meat. The system integrates solar photovoltaic panels with a controlled heating and ventilation unit, enabling consistent drying conditions even in low or no sunlight. The prototype, measuring 90 x 120 x 120 cm3, stores solar energy in batteries to power temperature and airflow regulation, achieving a maximum thermal efficiency of 80%. Comparative evaluations with traditional siui drying methods showed improved product consistency, hygiene, and shelf life. The dried meat from this system exhibited desirable sensory and physical qualities, including reduced moisture content (20%) and a deep red color (L* = 22.70±0.86. a* = 3.6S±0.50. b* = 4.47±0.27). Texture analysis revealed firmer products, with compression forces ranging from 10 to 13.5 N depending on drying conditions. Economic analysis indicated a feasible production cost and break-even point. This solar-powered dryer reduces contamination risks and seasonal limitations, offering a scalable, energy-efficient solution for local meat processors and rural communities. The system contributes to sustainable food processing and has strong potential for further innovation and commercialization.