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Title: 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:
 [1];  [2]
  1. (Sante Fe, NM)
  2. (San Mateo, CA)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
872520
Patent Number(s):
US 5953920
Assignee:
Regent of University of California (Los Alamos, NM) LANL
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 = {1999},
month = {1}
}

Patent:

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