Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
TEMPERATURE CONTROL SYSTEM USING PELTIER MODULES
Submission Author:
Daniela Maionchi , MT
Co-Authors:
Daniela Maionchi, Ivan Lemos Amorim, Alberto Mascarenhas
Presenter: Ivan Lemos Amorim
doi://10.26678/ABCM.COBEM2019.COB2019-2143
Abstract
In the present work an experimental technique is proposed for the measurement of the thermal efficiency of thermoelectric pellets based on Peltier effect. Thermoelectric devices are solid state devices which directly convert thermal energy to electrical energy and vice verse. A microcontroller is used to acquire data from the DS18B20 sensor (sensor used to measure temperature), where an analysis is made to characterize the best way to obtain Peltier cell cooling. The objective is to design and elaborate a temperature control system with temperature sensor and Peltier pellets as actuator. This system should take into account both heating and cooling of the chamber where it will act. The Ziegler and Nichols method was applied in the open loop system to obtain the PID parameters to be used in the controller for both heating and cooling processes. Simulations were performed in a MATLAB tool and in SIMULINK to obtain, respectively, a model for the plant response and the step response of the designed controllers. The results present first order and a second order transfer functions for cooling and heating models, respectively, and the designed controllers maintain the stability without overshoot.
Keywords
peltier, density, Peltier effect, PID Controler, temperature control
