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Title: Heat-driven acoustic cooling engine having no moving parts

Abstract

A heat-driven acoustic cooling engine having no moving parts receives heat from a heat source. The acoustic cooling engine comprises an elongated resonant pressure vessel having first and second ends. A compressible fluid having a substantial thermal expansion coefficient and capable of supporting an acoustic standing wave is contained in the resonant pressure vessel. The heat source supplies heat to the first end of the vessel. A first heat exchanger in the vessel is spaced-apart from the first end and receives heat from the first end. A first thermodynamic element is adjacent to the first heat exchanger and converts some of the heat transmitted by the first heat exchanger into acoustic power. A second thermodynamic element has a first end located spaced-apart from the first thermodynamic element and a second end farther away from the first thermodynamic element than is its first end. The first end of the second thermodynamic element heats while its second end cools as a consequence of the acoustic power. A second heat exchanger is adjacent to and between the first and second thermodynamic elements. A heat sink outside of the vessel is thermally coupled to and receives heat from the second heat exchanger. The resonantmore » pressure vessel can include a housing less than one-fourth wavelength in length coupled to a reservoir. The housing can include a reduced diameter portion communicating with the reservoir.« less

Inventors:
 [1];  [2];  [2];  [1]
  1. Los Alamos, NM
  2. Santa Fe, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
867078
Patent Number(s):
4858441
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03G - SPRING, WEIGHT, INERTIA OR LIKE MOTORS
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
heat-driven; acoustic; cooling; engine; moving; receives; heat; source; comprises; elongated; resonant; pressure; vessel; compressible; fluid; substantial; thermal; expansion; coefficient; capable; supporting; standing; wave; contained; supplies; exchanger; spaced-apart; thermodynamic; element; adjacent; converts; transmitted; power; located; farther; heats; cools; consequence; elements; sink; outside; thermally; coupled; housing; one-fourth; wavelength; length; reservoir; reduced; diameter; portion; communicating; compressible fluid; cooling engine; acoustic power; acoustic cooling; engine comprises; expansion coefficient; heat sink; thermal expansion; pressure vessel; heat exchange; heat exchanger; heat source; standing wave; resonant pressure; thermodynamic element; thermodynamic elements; thermally coupled; receives heat; reduced diameter; substantial thermal; diameter portion; heat-driven acoustic; /62/60/

Citation Formats

Wheatley, John C, Swift, Gregory W, Migliori, Albert, and Hofler, Thomas J. Heat-driven acoustic cooling engine having no moving parts. United States: N. p., 1989. Web.
Wheatley, John C, Swift, Gregory W, Migliori, Albert, & Hofler, Thomas J. Heat-driven acoustic cooling engine having no moving parts. United States.
Wheatley, John C, Swift, Gregory W, Migliori, Albert, and Hofler, Thomas J. Sun . "Heat-driven acoustic cooling engine having no moving parts". United States. https://www.osti.gov/servlets/purl/867078.
@article{osti_867078,
title = {Heat-driven acoustic cooling engine having no moving parts},
author = {Wheatley, John C and Swift, Gregory W and Migliori, Albert and Hofler, Thomas J},
abstractNote = {A heat-driven acoustic cooling engine having no moving parts receives heat from a heat source. The acoustic cooling engine comprises an elongated resonant pressure vessel having first and second ends. A compressible fluid having a substantial thermal expansion coefficient and capable of supporting an acoustic standing wave is contained in the resonant pressure vessel. The heat source supplies heat to the first end of the vessel. A first heat exchanger in the vessel is spaced-apart from the first end and receives heat from the first end. A first thermodynamic element is adjacent to the first heat exchanger and converts some of the heat transmitted by the first heat exchanger into acoustic power. A second thermodynamic element has a first end located spaced-apart from the first thermodynamic element and a second end farther away from the first thermodynamic element than is its first end. The first end of the second thermodynamic element heats while its second end cools as a consequence of the acoustic power. A second heat exchanger is adjacent to and between the first and second thermodynamic elements. A heat sink outside of the vessel is thermally coupled to and receives heat from the second heat exchanger. The resonant pressure vessel can include a housing less than one-fourth wavelength in length coupled to a reservoir. The housing can include a reduced diameter portion communicating with the reservoir.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}