Estudo de um secador solar de exposição direta fabricado com materiais de baixo custo

Abstract

The work presents the manufacturing process of a solar dryer in EPS, with the purpose of drying food using low-cost equipment that is useful to the most needy society. The equipment was manufactured from EPS plates, aluminum plates and glass sheets. The adopted format was rectangular, adopting the dimensions: 0.50 m wide, 2 m long and 0.12 m high, thus resulting in a drying area of 1 m². The analysis was carried out on three types of food, in order to analyze the viability of the production and productive potential of the prototype. The dryer consists of EPS sheets forming the entire base and sides of the dryer with sheets of aluminum, beer and soda cans. Glass slides were placed inside the dryer, where the food to be dried was deposited. The direct exposure dryer works in natural convection. The main characteristics of the solar dryer studied are its easy manufacturing, assembly and operation processes, which can be passed on to people of any social and intellectual level. The by-products obtained, raisins, bran and flour can present an income option, for its commercialization, for needy people.