Advisor

Erik Bodegom

Date of Award

7-22-1994

Document Type

Thesis

Degree Name

Master of Science (M.S.) in Physics

Department

Physics

Physical Description

1 online resource (43 p.)

Subjects

Refrigerators, Heat -- Transmission

DOI

10.15760/etd.6598

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.

Description

If you are the rightful copyright holder of this dissertation or thesis and wish to have it removed from the Open Access Collection, please submit a request to pdxscholar@pdx.edu and include clear identification of the work, preferably with URL

Persistent Identifier

https://archives.pdx.edu/ds/psu/27762

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