Tapered pulse tube for pulse tube refrigerators
Abstract
Thermal insulation of the pulse tube in a pulse-tube refrigerator is maintained by optimally varying the radius of the pulse tube to suppress convective heat loss from mass flux streaming in the pulse tube. A simple cone with an optimum taper angle will often provide sufficient improvement. Alternatively, the pulse tube radius r as a function of axial position x can be shaped with r(x) such that streaming is optimally suppressed at each x.
- Inventors:
-
- Sante Fe, NM
- San Mateo, CA
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 872520
- Patent Number(s):
- 5953920
- Assignee:
- Regent of University of California (Los Alamos, NM)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02G - HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS
F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- tapered; pulse; tube; refrigerators; thermal; insulation; pulse-tube; refrigerator; maintained; optimally; varying; radius; suppress; convective; heat; loss; mass; flux; streaming; simple; cone; optimum; taper; angle; provide; sufficient; improvement; alternatively; function; axial; position; shaped; suppressed; pulse tube; mass flux; convective heat; heat loss; thermal insulation; provide sufficient; axial position; tube refrigerator; /62/60/
Citation Formats
Swift, Gregory W, and Olson, Jeffrey R. Tapered pulse tube for pulse tube refrigerators. United States: N. p., 1999.
Web.
Swift, Gregory W, & Olson, Jeffrey R. Tapered pulse tube for pulse tube refrigerators. United States.
Swift, Gregory W, and Olson, Jeffrey R. Fri .
"Tapered pulse tube for pulse tube refrigerators". United States. https://www.osti.gov/servlets/purl/872520.
@article{osti_872520,
title = {Tapered pulse tube for pulse tube refrigerators},
author = {Swift, Gregory W and Olson, Jeffrey R},
abstractNote = {Thermal insulation of the pulse tube in a pulse-tube refrigerator is maintained by optimally varying the radius of the pulse tube to suppress convective heat loss from mass flux streaming in the pulse tube. A simple cone with an optimum taper angle will often provide sufficient improvement. Alternatively, the pulse tube radius r as a function of axial position x can be shaped with r(x) such that streaming is optimally suppressed at each x.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
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Works referenced in this record:
The influence of heat conduction on acoustic streaming
journal, May 1974
- Rott, Nikolaus
- Zeitschrift für angewandte Mathematik und Physik ZAMP, Vol. 25, Issue 3