Oscillating side-branch enhancements of thermoacoustic heat exchangers

Swift, Gregory W.

Title: Oscillating side-branch enhancements of thermoacoustic heat exchangers

Abstract

A regenerator-based engine or refrigerator has a regenerator with two ends at two different temperatures, through which a gas oscillates at a first oscillating volumetric flow rate in the direction between the two ends and in which the pressure of the gas oscillates, and first and second heat exchangers, each of which is at one of the two different temperatures. A dead-end side branch into which the gas oscillates has compliance and is connected adjacent to one of the ends of the regenerator to form a second oscillating gas flow rate additive with the first oscillating volumetric flow rate, the compliance having a volume effective to provide a selected total oscillating gas volumetric flow rate through the first heat exchanger. This configuration enables the first heat exchanger to be configured and located to better enhance the performance of the heat exchanger rather than being confined to the location and configuration of the regenerator.

Inventors:: Swift, Gregory W.

Issue Date:: 2003-05-13

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1174314

Patent Number(s):: 6560970

Application Number:: 10/165,700

Assignee:: The Regents of the University of California (Los Alamos, NM)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS

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F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
F25B9/145 - {pulse-tube cycle}
F25B9/14 - characterised by the cycle used, e.g. Stirling cycle {
F25B2309/1424 - Pulse tubes with basic schematic including an orifice and a reservoir
F25B2309/1405 - Pulse-tube cycles with travelling waves
F25B2309/1403 - Pulse-tube cycles with heat input into acoustic driver

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DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Swift, Gregory W. Oscillating side-branch enhancements of thermoacoustic heat exchangers.  United States: N. p., 2003. 
        Web.

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                    Swift, Gregory W. Oscillating side-branch enhancements of thermoacoustic heat exchangers.  United States.

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                    Swift, Gregory W. Tue .  
        "Oscillating side-branch enhancements of thermoacoustic heat exchangers".  United States.  https://www.osti.gov/servlets/purl/1174314.

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@article{osti_1174314,

  title        = {Oscillating side-branch enhancements of thermoacoustic heat exchangers},

  author       = {Swift, Gregory W.},

  abstractNote = {A regenerator-based engine or refrigerator has a regenerator with two ends at two different temperatures, through which a gas oscillates at a first oscillating volumetric flow rate in the direction between the two ends and in which the pressure of the gas oscillates, and first and second heat exchangers, each of which is at one of the two different temperatures. A dead-end side branch into which the gas oscillates has compliance and is connected adjacent to one of the ends of the regenerator to form a second oscillating gas flow rate additive with the first oscillating volumetric flow rate, the compliance having a volume effective to provide a selected total oscillating gas volumetric flow rate through the first heat exchanger. This configuration enables the first heat exchanger to be configured and located to better enhance the performance of the heat exchanger rather than being confined to the location and configuration of the regenerator.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2003},

  month        = {5}

}

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Works referenced in this record:

A thermoacoustic Stirling heat engine
journal, May 1999

Backhaus, S.; Swift, G. W.
Nature, Vol. 399, Issue 6734
https://doi.org/10.1038/20624

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Title: Oscillating side-branch enhancements of thermoacoustic heat exchangers

Abstract

Citation Formats

A thermoacoustic Stirling heat engine journal, May 1999

A thermoacoustic Stirling heat engine
journal, May 1999