Utilization of Solar Energy as Heat Source

Abstract

The search for energetic alternatives and the concern about water preservation are novel ideas that challenge the humanity. This project was inspired in these challenges, being based in the utilization of solar energy for desalination of brackish water. A parabolic solar concentrator captures the solar radiation heating thermal fluid, which is closed-circuit circulated into a evaporator, which has three trays. The first has the functions of storing, pre-heating and condensing. The second works as an evaporator and the third stores the evaporated water. The system was tested with and without pump. The thermal fluid temperature reached 105°C and the amount of evaporated water reached 15kg/day. The equipment meets the social demand for sustainable inventions.

The influence of compositional variability of dimension stone residues on the properties of rustic porous ceramic tiles

“…To this end, many works investigated including dimension stone residues in red ceramics products [6][7][8][9][10][11][12][13]. The term 'red ceramic' includes several products with clays that contain iron oxides and hydroxides, responsible for the reddish color of the pieces after firing.…”

“…Nonetheless, major research investigated mixed residues, composed of mixing wastes that originated from different types of materials. In Cachoeiro de Itapemirim, a city in the South of Espírito Santo-Brazil, the only two works that studied the residues segregated according to rock type report that the compositional variability of residues is substantial, therefore requiring to select residues according to the lithological types to obtain more valuable raw materials [5,13]. Therefore, the present work aims to investigate how the compositional differences of the rocks processed in the Cachoeiro de Itapemirim region (ES) influence the properties of rustic porous ceramic tiles.…”

Estudo Preliminar Da Dinâmica De Aquecimento Em Concentradores Solares

“…Permitem a captação da energia solar que atinge o topo da estrutura mediante uma superfície espelhada que a reflete para uma região denominada de focal. Essa região focal é facilmente identificada a partir do conhecimento do tipo de curvatura que gerou a superfície reflexiva do concentrador solar (Prado et al, 2012). Segundo tais autores, a curvatura parabólica é a mais indicada para sistemas que fazem uso da reflexão, haja vista proporcionar um ponto focal.…”

Aproveitamento do caroço de manga: um estudo de viabilidade da pirólise usando energia solar

“…Porém, esta desvantagem pode ser superada usando sistemas solares de concentração que captam e transformam a energia solar em energia de outro tipo (geralmente térmica).Os concentradores solares são superfícies que permitem a captação da energia solar que atinge o topo da estrutura mediante uma superfície espelhada que a reflete para uma região denominada de focal(PRADO et al, 2012). A radiação solar é convertida em energia térmica nessa região focal.…”