Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Simplified thermal analysis and optimization of a beta type Stirling cycle
Submission Author:
HANDERSON CORREA GOMES , MG
Co-Authors:
Michel Fábio de Souza Moreira, Lucas Faria, christopher figueiredo, Filipe Fonseca, Caique Teixeira, David Henrique do Nascimento Viola, HANDERSON CORREA GOMES
Presenter: David Henrique do Nascimento Viola
doi://10.26678/ABCM.COBEM2017.COB17-1968
Abstract
In this work, it is performed the thermal analysis and optimization of a beta type Stirling cycle. The analysis was based on Thermodynamics. The optimization was performed using a Genetic algorithm with mono objective function. The cycle behavior operating with air, hydrogen and helium, and in different temperatures, to investigate which was more appropriate to obtain better power and efficiency. The Hydrogen showed better properties, but it presents a dangerous disadvantage, its high flammability. That is the reason why helium is gaining space to replace hydrogen. This fluid presents similar characteristics and properties with the hydrogen though it is not flammable. The air was also tested in computational engine simulation. The air is abundant and inexpensive, but presented a low thermal efficiency to the cycle. The results obtained in the analytic computational simulation and the experimental results have presented the deviation into the order of 17,4% for the same turn round conditions considering air as work fluid. With the optimization it can be observed that under specific conditions (hardly reached in experiment) the cycle can reach high yeld mainly with the reduction of the temperature differnces between the sources.
Keywords
Thermal Analysis, Optimization, Stirling cycle, Efficiency
