Abstract
In this investigation, the response surface methodology is implemented to analyze the influences of high and low pressure of the compressor, frequency and waiting time of the rotary valve on the cooling capacity and COP of Gifford-McMahon (GM) cryorefrigerator. A one-dimensional numerical model based on finite volume discretization method (FVM) of the governing equations is employed to calculate the cooling capacity and COP of the Gifford-McMahon cryorefrigerator. Analysis of variance (ANOVA) is performed to visualize the impact of the aforementioned input parameters on both cooling capacity and COP. Finally, the particle swarm optimization (PSO) method is opted to optimize the regression equations so obtained from the response surface analysis, to maximize the cooling capacity and COP of the Gifford-McMahon cryorefrigerator. Results reveal that both COP and cooling capacity are not able to produce maximum performance at a particular combination of those input parameters. At a lower pressure ratio, the COP is maximum, while at a higher pressure ratio the cooling capacity is maximum. Furthermore, at a nominal value of waiting time, the cooling capacity is maximum and a higher value of waiting time the COP is maximum. It is observed that, after optimizing the parameters by PSO, the cooling power increases by 11.3% and COP increases by 6.43%.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
