Second Law Based Analysis of Fluid Flow in the Regenerator of Pulse Tube Refrigerators

سال انتشار: 1387
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 160

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شناسه ملی سند علمی:

JR_IJE-21-2_007

تاریخ نمایه سازی: 20 اسفند 1400

چکیده مقاله:

As a necessary component, regenerator plays an important role in the refrigeration performance of the pulse tube refrigerator. The objective of this research is to investigate the flow characteristics in a porous regenerator of the pulse tube refrigerators, subjected to oscillating flow. The hydrodynamic and thermal behavior of the regenerator is investigated by considering porous media approach. The conservation equations are transformed by implementing the volumetric average scheme. Harmonic approximation technique is employed to derive an analytical solution. To investigate the system performance, second law analysis is performed in order to calculate the second law efficiency. The effect of geometry and operating key parameters on the regenerator performance are investigated as well. The developed model is able to predict the oscillating flow characteristics in the regenerator.

نویسندگان

S. Kazemzadeh Hannani

Mechanical Engineering, Sharif University of Technology

M.H. Saidi

Mechanical Engineering, Center of Excellence in Energy Conversion,Sharif

A. Jafarian

Mechanical Engineering, Sharif University of Technology