Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Study of the Peltier-Seebeck Effect in MIG Welding Process
Submission Author:
Adriane Mougo , RJ
Co-Authors:
Guilherme Amaral do Prado Campos, Adriane Mougo, RODOLFO SOBRAL, Cristiano Carvalho, Joseph William Diniz Peixoto, Rodrigo Franco Côrtes
Presenter: Guilherme Amaral do Prado Campos
doi://10.26678/ABCM.COBEM2023.COB2023-1947
Abstract
The Peltier-Seebeck thermoelectric effect refers to the generation of electricity from a temperature difference. The system that causes the heat flow to obtain this temperature difference is widely explored as an alternative to generate and supply energy in various electronic devices. This effect can be observed in practice using Peltier cells or pellets, which are used as refrigerators or thermoelectric energy converters. Its structure consists of a small arrangement of blocks of Bismuth Telluride - (Bi2Te3) doped with N-type and P-type semiconductors and welded between two ceramic plates, electrically connected in series and thermally in parallel. Based on this consideration, the aim of this work is to carry out an initial study on the use of the welding process thermal cycle for energy generation by using Peltier cells connected to the base metal. For this purpose, the KEMPI ProMIG 4200 welding machine, AWS ER70S-6 electrode wire with a diameter of 1.2 mm and 1020 carbon steel plates with a 5 mm thickness were used. The applied welding machine parameters are listed as follows: voltage of 16 V; welding speed (Vs) of 3,4 mm/s, 5,2 mm/s, and 7,8 mm/s; electrode feeding speed of 3.2 mm/s and average current of 150 A. For the thermoelectric effect analysis, the equipment TEC1-12706 Peltier pellet, IMPLASTEC thermal paste, digital multimeter for voltage and current measurements, thermograph and heat exchanger were used. After 50s of weld deposition, the measured temperature variations and voltage values were 11.1°C (146 V), 21.3°C (339 V), and 4.9°C (116 V) for Vs of 3,4 mm/s, 5,2 mm/s, and 7,8 mm/s, respectively. For these cited weld speeds, the obtained maximum voltage and current results are 452 mV and 72.4 mA, 620 mV and 96 mA, 283 mV and 46 mA. These results were obtained in an average time of 3 minutes when the ammeter began to register current and voltage dropping. In view of the results obtained, it was possible to verify the possibility of applying Peltier cells in energy generation from welding processes.
Keywords
Peltier pellet, welding process, GMAW Process, renewable energy
