Electrodynamic driver for the space thermoacoustic refrigerator (STAR)
By: Michele Fitzpatrick
Contributors: Naval Postgraduate School (U.S.)
Publisher: Naval Postgraduate School
Published: 1988
Place of publication: Monterey, California
Language: eng
Number of pages: 174
Subjects: Physics
Description: The objective of the STAR project is to test and space qualify a new continuous cycle cryogenic refrigeration system for cooling of sensors and electronics which is based upon the newly discovered thermoacoustic heat pumping effect. The new refrigerator has no sliding seals, a cycle frequency of about 300 hz, and uses acoustic resonance to enhance the overall power density and efficiency. This thesis is concerned specifically with the design and testing of the electrodynamic transducer which is responsible for the electro-acoustic power conversion. A computer model of the driver/resonator system is presented along with the techniques for measurement of the electrical and mechanical parameters used as input for the model. A final driver design (including dimensional drawings) utilizing a modified JBL 2450J neodymium-iron-boron compression driver and associated leak tight electrical feed-throughs, microphone, accelerometer, pressure gage, pressure housing, and resonator interface is provided. Keywords: Electrodynamic loudspeaker, Thermoacoustic refrigerator.
Notes: Thesis advisor(s): Garrett, S. L.

"March 1988."

Thesis (M.S. in Phys.)--Naval Postgraduate School, March 1988.

Includes bibliographic references  (p. 168-170)

Approved for public release, distribution unlimited.

Also available online.

Mode of access: World Wide Web.

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US Coast Guard (USCG) author.