Estudo de um forno solar tipo caixa fabricado em material compósito de matriz de resina poliéster e resíduos de caulim
Solar ovens take advantage of the natural energy of the sun and through the principles of the greenhouse effect and concentration make possible the roasting of food, fit into a source of clean and sustainable energy use. It is presented a box type solar cooker whose main characteristics were its low...
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| Formato: | Dissertação |
| Idioma: | por |
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| Acesso em linha: | https://repositorio.ufrn.br/jspui/handle/123456789/24838 |
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| Resumo: | Solar ovens take advantage of the natural energy of the sun and through the principles of the greenhouse effect and concentration make possible the roasting of food, fit into a source of clean and sustainable energy use. It is presented a box type solar cooker whose main characteristics were its low cost and simple processes of manufacture, assembly and operability. The alternative solar furnace had its side walls made of composite material of terephthalic polyester resin with kaolin residue. In addition to the polymeric composite, a polyurethane foam filling was applied with the main function of reducing the volume of resin used and consequently the cost of manufacturing the furnace. The base of the oven was made of wood, filled with polyurethane, in order to reduce heat loss from the bottom. The proposed solar furnace has transparent glass cover allowing the access of the solar rays to its interior and in addition was coupled to a heliostat providing the necessary heat to promote the food roasting. The studied solar furnace has the capacity to bake several groceries simultaneously, which represents a great advantage over other solar furnaces shown in the literature. Tests were carried out to bake foods such as: kibbe, curd cheese, breads, pizzas, chicken breaded and cakes. The tests demonstrated the viability of the proposed solar furnace, since it roasted all the established food, with times competitive with those obtained by other furnaces already studied in LMHES / UFRN. It should be noted that the average internal temperature of the absorber was around 125 ° C and the internal temperature of the oven around 100 ° C, being able to bake up to four cakes simultaneously. Thus, the studied solar furnace can provoke the socialization of the use of solar energy by needy communities, being able to constitute a source of employment and income generation. |
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