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  • PHYSICAL SCIENCES  (2)
  • ELECTRONIC COMPONENTS AND CIRCUITS  (1)
  • 2020-2023
  • 1990-1994  (3)
  • 1950-1954
  • 1910-1914
  • 1991  (3)
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  • 2020-2023
  • 1990-1994  (3)
  • 1950-1954
  • 1910-1914
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  • 1
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    Mixed-Gas Sorption Joule-Thomson Refrigerator (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Proposed mixed-gas sorption Joule-Thomson refrigerator provides cooling down to temperature of 70 K. Includes only one stage and no mechanical compressor. Simpler, operates without vibrating, and consumes less power in producing same amount of cooling. Same sorption principle of operation applicable in compressor that chemisorbs oxygen or hydrogen from mixture with helium, neon, and/or other nonreactive gases.
    Keywords: PHYSICAL SCIENCES
    Type: NPO-17569 , NASA Tech Briefs (ISSN 0145-319X); 15; 5; P. 38
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Reversible Chemisorption Gas-Gap Thermal Switch (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Gas/sorbent combinations provide means to turn heat-conduction paths on and off. Single-stage gas-gap thermal switch based on reversible chemisorption of hydrogen gas by ZrNiH. Two-stage gas-gap thermal switch based on reversible desorption of O2 from MnO2 in first stage, followed by absorption in Cu on zeolite in second stage. Requires relatively low power. Used in sorption refrigeration systems designed to operate for long times without maintenance.
    Keywords: PHYSICAL SCIENCES
    Type: NPO-17568 , NASA Tech Briefs (ISSN 0145-319X); 15; 11; P. 54
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Thermal Strap And Cushion For Thermoelectric Cooler (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Inexpensive cushioning strap proposed for use as thermal contact between thermoelectric cooler and device to be cooled, such as laser diode, infrared detector, or charge-coupled device for imaging. Provides high thermal conductance while minimizing thermal and mechanical stresses on thermoelectric cooler. Used as alternative to flexible thermal strap made of silver.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-17806 , NASA Tech Briefs (ISSN 0145-319X); 15; 6; P. 16
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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