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- Relatório final projeto landfoodPublication . Ribeiro, Luís Frölén; Farrero, Bernardo; Rossi da Silva, Paulo BrunoEste relatório técnico final elaborado pelo Instituto Politécnico de Bragança sobre as atividades desenvolvidas no projeto "LandFood" para a Landratech. Relata o desenvolvimento de um secador solar para a pré-secagem de bolotas no campo.
- Responsive dehydration: sensor-driven optimisation of production cycles in a solar dehydratorPublication . Rossi da Silva, Paulo Bruno; Farrero, Bernardo; Silva, Arthur Marangoanha; Babo, Pedro S.; Ribeiro, Luís FrölénDrying is an effective method for preserving food. Compared to freezing, it consumes less energy and produces equivalent results. Solar heat is a great way for small farmers to create sustainable and affordable goods since it costs no energy. This article describes and explains how to operate equipment developed to address this issue. The equipment is currently undergoing experimental validation, and real-time monitoring and user notification systems have been installed to improve the production experience and the post-harvest conservation of food products. Additionally, the installed tracking system allows farmers to keep track of their products from the farm to the factory. This article demonstrates how integrated monitoring and tracking systems can enhance small farmer production by optimizing the drying process of acorns.
- Revisiting solar dryers for small to medium productionPublication . Farrero, Bernardo; Rossi da Silva, Paulo Bruno; Ribeiro, Luís FrölénThis article presents an overview of passive solar dryers, an ancient technique that may be revived for food drying capacities below one ton/day. The art of dehydrating food has existed for centuries and was developed to preserve food by extracting its water content, thus delaying its natural deterioration. This article reviews traditional solar dryers and proposes a verification parameter k, parametrising the solar collector’s size by the drying capacity. The modelling and parametrisa tion of the k constant allowed the evaluation of the examples of tra ditional models from the literature systematically. Results showed that 80% of the evaluated constructed solar dryers might underperform due to lower solar collecting surfaces than those projected by the k parameter.