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CEC-ICMC 2015 - Timetable, Abstracts and Presentations

28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

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Session

C1OrB - Cryogenic Heat Transfer

C1OrB
29 Jun 2015, 11:00
JW Marriott Starr Pass Resort

JW Marriott Starr Pass Resort

Tucson, Arizona USA

Conveners

C1OrB - Cryogenic Heat Transfer

  • Bertrand Baudouy (CEA Saclay)
  • James Tuttle (NASA/GSFC)

Presentation materials

There are no materials yet.

  1. 79. ULTRA-FLEXIBLE THERMAL BUS FOR USE IN THE ASTRO-H ADIABATIC DEMAGNETIZATION REFRIGERATOR
    Dr Mark Kimball (NASA/Goddard Space Flight Center)
    29/06/2015, 11:00
    CEC-12 - Fluid Mechanics, Heat Transfer, and Cryogen Properties
    Contributed Oral Presentation
    The adiabatic demagnetization refrigerator (ADR) developed for the Astro-H Soft-Xray Spectrometer (SXS) is a multi-stage solid-state cooler. It is capable of holding the SXS detector array at 0.050 K for greater than 24 hours with a recycle time of less than one hour. This quick recycle time relies upon high-conductivity thermal straps to couple the individual stages to a pair of heat switches...
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  2. 80. A thermally-conductive electrical isolator for use at ultra-low temperatures in the Astro-H Adiabatic Demagnetization Refrigerator
    Mark Kimball
    29/06/2015, 11:15
    CEC-12 - Fluid Mechanics, Heat Transfer, and Cryogen Properties
    Contributed Oral Presentation
    The Soft X-ray Spectrometer (SXS) destined for the Japanese Astro-H mission contains a 6x6 array of microcalorimeters. To achieve ultimate resolution the array must be electrically isolated from the rest of the instrument as well as cooled to 0.050 K. The latter is achieved by directly coupling it to the coldest stage of a multi-stage Adiabatic Demagnetization Refrigerator (ADR). Thus, the...
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  3. 166. Low-temperature thermal conductivity of highly porous copper
    Gonçalo Tomás (LIBPhys, Physics Department, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa)
    29/06/2015, 11:30
    CEC-12 - Fluid Mechanics, Heat Transfer, and Cryogen Properties
    Contributed Oral Presentation
    The development and characterization of new materials is of extreme importance in the design of cryogenic apparatus. Recently the Versarien company developed a technique capable of producing copper foam with controlled porosity and pore size. Such porous materials could be interesting for cryogenic heat exchangers as well as of special interest in some cryogenic devices for microgravity...
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  4. 383. Single-phase ambient and cryogenic temperature heat transfer coefficients in microchannels
    Mr Peter Bradley (NIST)
    29/06/2015, 11:45
    CEC-12 - Fluid Mechanics, Heat Transfer, and Cryogen Properties
    Contributed Oral Presentation
    Micro-scaling cryogenic refrigerators, in particular the Joule-Thomson (JT) variety requires very good information about heat transfer characteristics of the refrigerants flowing in the microchannel for optimal design and performance. There are numerous studies regarding heat transfer coefficient measurements of liquid flow in microchannels at/near ambient temperature and high Reynolds flow...
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  5. 55. Flow of nitrogen gas in a liquid helium cooled vacuum tube: Condensation heat transfer
    Ram Dhuley (Florida State University)
    29/06/2015, 12:00
    CEC-12 - Fluid Mechanics, Heat Transfer, and Cryogen Properties
    Contributed Oral Presentation
    Linear accelerators (LINACs) using superconducting radio frequency (SRF) technology comprise of a long string of SRF cavities housed in discreet cryomodules. This cavity string is operated immersed in liquid helium (LHe) with high vacuum on its inside. Sudden loss of this cold vacuum to surrounding atmosphere perceivably is the worst failure mode of the LINAC. An accidental rupture at any...
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