Smart Mini Solar Dryer for Laboratory Pilot

This research was prompted by the alarming prevalence of malnutrition among children in Madagascar, exacerbated by the impact of COVID-19. The current state of knowledge on the solar drying of algae, particularly spirulina, which could significantly contribute to addressing this pressing issue, is not well-established. Consequently, ongoing laboratory investigations necessitate appropriate apparatus. This article introduces the design of a device tailored for experimental studies, with the goal of enhancing the functionality of an intelligent solar dryer. A crucial aspect involves creating a cost-effective experimental configuration suitable for adoption by African research laboratories, often constrained by limited resources. The developed device, incorporating smart sensors, comprises a solid adsorption dehumidifier, an embedded computer system with regulation, a photovoltaic system with storage, and inclusive user interfaces. The primary objective was to optimize food dehydration by initially dehumidifying the air. The results obtained demonstrate that the device facilitates faster drying with optimal temperature regulation. The process monitoring is facilitated by a mobile application. In terms of future research, the focus will shift towards achieving optimal low-temperature drying of spirulina. Regarding education, the setup will be employed to implement interdisciplinary practical exercises encompassing thermal, computer, electronic, and energy-related aspects.