Diseño y construcción de un Colector Solar de Tipo Concentrador Parabólico Compuesto (CPC) para pruebas de calentamiento de aire

Abstract

This paper presents a design proposal and the theoretical and experimental evaluation of a solar collector of parabolic concentrator type (CPC) with tubular absorber for air heating tests with ideal thermal performances for applications such as drying and conditioning systems. air. The collector consists of four concentrators formed of galvanized sheet that make the function of reflecting the sunlight towards the absorber tubes, with a concentration ratio of 2.5 and an acceptance half-angle of 23.5º, with the objective of not requiring a system of solar tracking The absorber is a copper tube where the air circulates. With this proposal from the collector, a theoretical efficiency of 25% was obtained, which represents a third part of energy gain compared to a commercial CPC. This efficiency was obtained according to the materials and dimensions implemented. The system is technically feasible to be used for low temperature processes, with average quality of 60 ºC, which can produce significant energy savings and reducing the amount of CO2 emissions, favoring the environment.