Repotenciación de sistema de aire acondicionado automotriz mediante la implementación de intercambiador de calor IHX digitalizando los parámetros del banco de pruebas del laboratorio de la carrera de Ingeniería Automotriz.

Abstract

In the Automotive Engineering career which belongs to the Polytechnic School of Chimborazo, the need arises to investigate new trends that aim to improve the performance of machines and systems, in this case to improve the energy efficiency of the refrigeration cycle. For this reasons the repower of the existing test bank in the air conditioning laboratory develops, being able to contribute data of pressure, temperature in the entrance and exit of each component of the system offering a reliable data base. The test bank requires to satisfy criteria for increased COP by implementing IHX a Heat Exchanger Internal heat exchanger, thereby decreasing the consumption required by the vehicle´s refrigeration system, which will be installed in the equipment by quick couplings which allow validating other models of the heat exchangers. Another requirement is the practicality at the moment of obtaining the data that the systems gives, thus helping to an easy and safe collection by means of the use of sensors and a data acquisition card. In order to be supportive in the learning process, the didactics presented by the team provides the comfort and safety necessary to make this instrument of teaching and experimental validation. By means of the realization of this manual of operation the student is given the possibility of performing laboratory practices in real time and with greater accuracy. The implementation of the sensors and the exchanger of heat IHX of counterflow which achieves an increase of the system COP by between 2% and 4% according to the results obtained, which can be displayed on a screen, thereby decreasing the consumption required by the system of refrigeration, before carrying out laboratory practices read the operating manual for proper use of the ignition, shutdown and operation of the test bank.