Diseño y construcción de un secador solar indirecto de arena aplicada en sandblasting para la empresa Symep S.A.

Abstract

In the present thesis an indirect solar dryer was designed and built for drying sand to be used in the process of sandblasting, for the company Symep S.A. First, the drying curves of the sand were obtained through laboratory testing, with these data the next step is to calculate the heat flow needed to remove moisture from the product, which resulted in 1147,36 [W]. Then, the solar collector was dimensioned to supply the heat flow, with an effective area of 3.2 m2. Prior to the construction, the structural analysis was performed with a computer assisted design, which confirmed that the structure supports the functional load. Then the constructive plans of the equipment were developed. The operation of the equipment was evaluated using tests without the load, which resulted in an average temperature entering the drying chamber of 43,03°C and a solar collector efficiency of 34,31%. The total cost of the dryer was $8163,32.