Análisis y simulación de los mecanismos de transfrencia de calor en un colector de placa plana de 0.10 m2 utilizando el refrigerante R600a

Abstract

The present research focuses on the analysis and simulation of heat transfer mechanisms in a flat plate collector of 0.10 m2 using R600a refrigerant, for which first the parameters of the simulation are defined as the working temperature, incident radiation, the geometry of the mechanism, the calculation of the heat transfer coefficients. The physical and chemical properties of the R600a refrigerant are also analyzed and compared with other refrigerants on the market. We proceed to define the properties of the working fluid in the Engineering Equation Solver (EES) software, at the working pressure and working temperature, for the analysis we use two fluids that are water and R600a refrigerant. When the parameters are defined, the simulation is carried out with ANSYS Fluent, to validate the method used, we realize different representation with flat solar collectors previously studied. Subsequently, the collector in question is analyzed, a parametric study of the design variables is performed, such as: the inner and outer diameter, the flow and the amount of incident radiation. In the real operating conditions of the evaporator, it is obtained that the temperature at the outlet of the collector for the water are 293.23 K and refrigerant R600a are 283.8 K, the efficiency, in addition to the efficiency for the collector is 59.6%, when treating the evaporator as a solar collector.