Sponsor
Portland State University. Department of Physics
First Advisor
Erik Bodegom
Term of Graduation
Summer 1994
Date of Publication
7-22-1994
Document Type
Thesis
Degree Name
Master of Science (M.S.) in Physics
Department
Physics
Language
English
Subjects
Refrigerators, Heat -- Transmission
DOI
10.15760/etd.6598
Physical Description
1 online resource (43 pages)
Abstract
The application of thermoacoustic phenomena for cooling purposes has a comparatively short history. However, recent experiments have shown that thermoacoustic refrigeration can achieve practical significance for both every day cooling in households and cryocooling for scientific purposes due to its high reliability, environmental safety and functioning under extreme conditions.
We build a thermoacoustic refrigerator driven by a commercial loudspeaker. It was equipped with a vacuum pump and an entrance port for introducing different gases under different pressures as working fluids. It contained two thermocouples and a pressure transducer for quantitative measurements of the basic performance. The resonance frequency of the tube for different gases has been determined and compared to the theoretical value. The temperatures of the hot and the cold heat exchanger have been measured.
Also, a simple thermoacoustic oscillator for demonstration purposes was built. After immersing one end in liquid nitrogen or heating up the other end with a bunsen burner it started to oscillate and emit a sound.
Rights
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Persistent Identifier
https://archives.pdx.edu/ds/psu/27762
Recommended Citation
Blumreiter, Torsten, "Building of a Thermoacoustic Refrigerator and Measuring the Basic Performance" (1994). Dissertations and Theses. Paper 4714.
https://doi.org/10.15760/etd.6598
Comments
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