Sistema de aquisição de dados de temperatura de trocador de calor de casco e tubos

Abstract

This project aims to develop a temperature reading system in a shell and tube heat exchanger, which allows to evaluate the thermal efficiency of the system based on parallel flow. In the design, only parallel flow was used due to the arrangement of the heat exchanger on the workbench that was designed to prevent damage to it and to allow mounting on the workbench so that only the working fluids were needed. To perform the thermal efficiency analysis, differences in temperature readings of hot fluid, cold fluid and fluids leaving the heat exchanger are taken into account in both the hot fluid flow and the cold fluid flow. Exit fluid temperatures are also checked based on the variation of cold fluid flow at the heat exchanger inlet. The fluid chosen for the study was water. Fluid flow measurements for both tests were made using the arduino for data reading and similarly fluid temperature readings were made using a sensor that reads the arduino and two sensors that do not use the arduino, due to the fact that it has its own display. Five tests were performed varying the flow of cold fluid and the results obtained were satisfactory, as it proves that a change of flow causes differences in outlet temperatures, as expected, for both hot and cold fluid, the system assembled will facilitate the understanding of heat exchange for future students of the institution.