Universiti Teknologi Malaysia Institutional Repository

Thermoacoustic refrigerator's stack optimization

Mohd. Ghazali, Normah and Yaacob , Mohd. Shafiek and Darus, Amer Nordin and M. H., El-Fawal (2010) Thermoacoustic refrigerator's stack optimization. In: 10th Asian International Conference On Fluid Machinery, 2010, Kuala Lumpur, Malaysia.

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Official URL: http://dx.doi.org/10.1063/1.3464858

Abstract

The standing wave thermoacoustic refrigerator, which uses sound generation to transfer heat, was developed rapidly during the past four decades. It was regarded as a new, promising and environmentally benign alternative to conventional compression vapor refrigerators, although it was not competitive regarding the coefficient of performance (COP) yet. Thus the aim of this paper is to enhance thermoacoustic refrigerator's stack performance through optimization. A computational optimization procedure of thermoacoustic stack design was fully developed. The procedure was designed to achieve optimal coefficient of performance based on most of the design and operating parameters. Cooling load and acoustic power governing equations were set assuming the linear thermoacoustic theory. Lagrange multipliers method was used as an optimization technique tool to solve the governing equations. Numerical analyses results of the developed design procedure are presented. The results showed that the stack design parameters are the most significant parameters for the optimal overall performance. The coefficient of performance obtained increases by about 48.8% from the published experimental optimization methods. The results are in good agreement with past established studies.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:heat transfer, compressors, cryogenics, thermoacoustics, resonators; turbulent transport processes, modulators and demodulators; discriminators, comparators, mixers, limiters, and compressors, cryogenics; refrigerators, low-temperature detectors, and other low-temperature equipment, acoustic instruments and equipment, resonators, cavities, amplifiers, arrays, and rings
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:27967
Deposited By: Liza Porijo
Deposited On:29 Aug 2012 09:21
Last Modified:29 Aug 2012 09:23

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