Mejora del coeficiente de convección en condensadores de instalaciones frigoríficas mediante el subenriamiento del gas de entrada por reinyección de líquido

Abstract

The research work focuses on the study of the convection coficient of the condenser in a refrigeration cycle. The superheating of the incoming gas to the condenser was reduced by the reinjection of liquid. An analysis was carried out by means of a mathematical model and an experimental one with data from the cooling testing bench of the energy laboratory of the Mechanical Engineering Career. A mathematical model was used to predict the operation of the refrigeration system, to determine if there is an improvement in the convection coeficient of the condenser when liquid is injected at the inlet of the condenser. These data were compared with the experimental data. The cooling bench was re-powered and equiped for data collection, using pressure sensors, temperature and flow meters located at fundamental points in the cooling circuit. A database was obtained to analyze and compare the results with the predictive mathematical model. Once the results were analyzed, a non-representative reduction in the convection coeficient in the condenser was obtained.