Optimization of Geometric Parameters and Performance Comparison of Scroll Compressors based on Particle Swarm Optimization Algorithm
The study aims to improve the refrigeration performance of micro scroll compressors.A mathematical model of the refrigeration performance coefficients of a certain micro refrigeration scroll compressor was established with geometric parameter constraints added.The particle swarm optimization algorithm was used to optimize the geometric design parameters of the refrigeration scroll compressor to improve its performance.With energy efficiency ratio as the objective function,its iterative optimization was carried out with the MATLAB software.On the basis of the geometric parameters of the original vortex profile and the optimized one,the fluid domain mathematical model of both the static vortex plate of the original vortex compressor and the optimized one was established and numerically simulated by the fluid dynamics(CFD)method.A comparative analysis was made of their geometric and performance parameters as well as their flow pattern and state distribution of the working fluid in the working chamber.It is shown that the overall mass of the scroll plate of the micro refrigeration scroll compressor optimized by the particle swarm algorithm decreases by 7.92％,its suction volume increases by 87.77％,and its coefficient of performance increases by 88.08％.In the numerical simulation,the mass flow rate of the inlet and outlet before and after optimization was compared.After optimization,the inlet mass flow rate increases by 84.25％and the outlet mass flow rate by 82.14％;the pressure distribution in the working chamber decreases,but the outlet pressure increases significantly;the transient peak pressure in the working chamber increases by 67.78％.However,due to the enlargement of the central compression chamber,the exhaust port is obstructed,resulting in an asymmetric distribution of the working chamber pressure at some point.This study can provide reference for the design of micro refrigeration vortex compressors.
compressorparticle swarm algorithmenergy efficiency ratiostatic and dynamic scroll discs
万方数据
维普
