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Title : Effects of the Length and Location of Stack on the Temperature Decrease of a Thermoacoustic Cooler
Author :

Ikhsan Setiawan, S.Si., M.Si. (1) Prof. Dr. Agung Bambang Setio Utomo, S.U. (2) Makoto Nohtomi (3) Masafumi Katsuta (4)
Date : 0 2012
Keyword : Thermoacoustic cooler, stack length, stack location, temperature decrease Thermoacoustic cooler, stack length, stack location, temperature decrease
Abstract : Thermoacoustic coolers are environmentally friendly cooling devices because they use harmless gases as working medium instead of chlorofuorocarbons (CFCs) or hydrofluorocarbons (HFCs) as in conventional coolers. They employ sound wave to induce heat transfer in a stack (porous medium), i.e. between working gas and stack material. In this experiment, the working gas was free air at atmospheric pressure and the stacks were parallel plate type made of mica sheets. The stack was installed inside a straight cylindrical 1/4-wavelength resonator of 80 cm in length. An 8” 150 W loudspeaker was used to provide acoustic work. It has been experimentally studied the effects of stack length and stack location in the resonator on the temperature decrease of a thermoacoustic cooler. It was found that each parameter has an optimum value which gave the largest temperature decrease. In this case, the optimum length was 10 cm and the optimum location was at 10 cm of the distance of stack’s center measured from the closed end of the resonator. The combination of these optimum values gave a temperature decrease of 11 C at the cooling point so that the air temperature in this location was down to 19 C.
Group of Knowledge : Fisika
Level : Internasional
Status :
Published
Document
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1 prosiding2012-ICP-Ikhsan.pdf
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2 2012-1 (Gasal) Sertifikat participant 3rd-ICP.pdf
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3 cek-similarity-ICP-2012.pdf
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