Implementación del sistema de monitoreo y supervisión de temperaturas de dos sistemas de refrigeración del Laboratorio de Tecnología Industrial.

Abstract

In the present degree project, a temperature monitoring and supervision system was implemented for the two refrigeration systems of the Industrial Technology Laboratory and tests were carried out with thermocouples installed at strategic points. It is designed for the use of Electromechanics students, where they can put into practice the theoretical knowledge acquired in class. For the design of the monitoring system the heat transfer calculation was performed since temperatures of the pipes are obtained through thermocouples. Based on these data for each network of thermal resistances, heat conduction is performed in combination with convection, both on the inside and outside of the pipe. A microcontroller was used, where the respective code was made to obtain the temperature value at each strategic point for displaying on an LCD, showing the temperature of the pipe and the fluid at each point. The operation tests were carried out in an estimated time of 15-20 minutes, where variation of temperatures is verified according to the pressures until the equipment stabilizes. The signals, emitted by the thermocouples and conditioned by the MAX6675 modules, are values close to the ideal refrigeration cycle analysis and each reading was taken every five seconds. Based on the results, it was concluded that the use of thermocouples and the instrumentation were adequate for the implementation of the monitoring modules, but for the negative temperature readings a conditioning stage with a wider range should be used.