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Title: Thermoacoustic couple

Abstract

An apparatus and method for determining acoustic power density level and its direction in a fluid using a single sensor are disclosed. The preferred embodiment of the apparatus, which is termed a thermoacoustic couple, consists of a stack of thin, spaced apart polymeric plates, selected ones of which include multiple bimetallic thermocouple junctions positioned along opposite end edges thereof. The thermocouple junctions are connected in series in the nature of a thermopile, and are arranged so as to be responsive to small temperature differences between the opposite edges of the plates. The magnitude of the temperature difference, as represented by the magnitude of the electrical potential difference generated by the thermopile, is found to be directly related to the level of acoustic power density in the gas.

Inventors:
; ;
Publication Date:
OSTI Identifier:
6853261
Alternate Identifier(s):
OSTI ID: 6853261; Legacy ID: DE84011296
Application Number:
ON: DE84011296
Assignee:
Dept. of Energy ERA-09-026891; EDB-84-085632
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; ACOUSTIC MEASUREMENTS; THERMOCOUPLES; MEASURING INSTRUMENTS 440300* -- Miscellaneous Instruments-- (-1989)

Citation Formats

Wheatley, J.C., Swift, G.W., and Migliori, A.. Thermoacoustic couple. United States: N. p., 1983. Web.
Wheatley, J.C., Swift, G.W., & Migliori, A.. Thermoacoustic couple. United States.
Wheatley, J.C., Swift, G.W., and Migliori, A.. Tue . "Thermoacoustic couple". United States.
@article{osti_6853261,
title = {Thermoacoustic couple},
author = {Wheatley, J.C. and Swift, G.W. and Migliori, A.},
abstractNote = {An apparatus and method for determining acoustic power density level and its direction in a fluid using a single sensor are disclosed. The preferred embodiment of the apparatus, which is termed a thermoacoustic couple, consists of a stack of thin, spaced apart polymeric plates, selected ones of which include multiple bimetallic thermocouple junctions positioned along opposite end edges thereof. The thermocouple junctions are connected in series in the nature of a thermopile, and are arranged so as to be responsive to small temperature differences between the opposite edges of the plates. The magnitude of the temperature difference, as represented by the magnitude of the electrical potential difference generated by the thermopile, is found to be directly related to the level of acoustic power density in the gas.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 04 00:00:00 EDT 1983},
month = {Tue Oct 04 00:00:00 EDT 1983}
}