Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Numerical simulation of thermoacoustic refrigerator and study of resonator length and working fluid on its operation

Authors
1 Msc. Student, Department of Mechanical Engineering, Islamic Azad University, Central Tehran Branch,
2 Assistant professor, Department of Mechanical Engineering, Islamic Azad University, Central Tehran Branch,
3 Associate professor, Islamic Azad University, Central Tehran Branch
Abstract
In this study, the effect of resonator length and working fluid on operation of heat-driven thermoacoustic refrigerator is investigated. The working fluid is considered to be Helium, Nitrogen and Argon. The simulation is carried out via a numerical method and the results are compared with DELTA-EC software. The results of these two methods are in good agreement with each other. The simulations show that increase in the resonator length results to increase in pressure amplitude for all mentioned working fluids and the frequency reduces by applying the Helium, Nitrogen and Argon respectively. Increasing the resonator length from 0.5m through 1.4m leads to reduction of the coefficient of performance for Nitrogen and Argon while this coefficient increases for Helium. The best coefficient of performance is gained for Helium gas and resonator length equal to 1.4m.
Keywords

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Volume 18, Issue 2 - Serial Number 43
Fluid Mechanics and Heat Transfer
Autumn 2016
Pages 6-21

  • Receive Date 01 May 2014
  • Revise Date 07 May 2016
  • Accept Date 07 June 2016