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CEC/ICMC 2023 Abstracts & Technical Program

9–13 Jul 2023
Hawaii Convention Center
US/Hawaii timezone

Conference Management: Centennial Conferences

Session

C3Or4B: Components VII: Cryogenic Heat Exchangers

12 Jul 2023, 16:15
315

315

Conveners

C3Or4B: Components VII: Cryogenic Heat Exchangers

  • Bertrand Baudouy (CEA Paris-Saclay)

Presentation materials

There are no materials yet.

  1. 387. C3Or4B-01: Nitrogen Precooling Heat Exchanger replacement and control system upgrade in Superfluid Cryoplant at CMTF
    Jeewan Subedi (Fermi National Accelerator Laboratory)
    12/07/2023, 16:15
    Contributed Oral

    Liquid Nitrogen precooling is used in most Cryoplants to achieve cooldown to 80 K temperature range. In one such system at Fermilab’s CMTF Superfluid Cryoplant, where the Helium supply directly exchanges heat with liquid Nitrogen, freezing of Nitrogen occurred inside the heat exchanger due to heat exchanger imbalance during a Cryoplant trip. Trapped vapor pockets of N2 within the frozen heat...

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  2. 704. C3Or4B-02: Withdrawn
    12/07/2023, 16:30
  3. 448. C3Or4B-03: A high effective meso-scale helical-tube-bundle recuperator spanning from 300 K to 30 K
    John Pfotenhauer
    12/07/2023, 16:45
    Contributed Oral

    Recuperative heat exchangers play an important role and have a large influence on the overall efficiency in many cryogenic systems. The recuperators to achieve fast cooldown can be summarized as effective, compact, and low pressure-drop. Designing this type of heat exchanger has been a challenge, especially when the size and effectiveness objectives are becoming more and more strict with the...

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  4. 710. C3Or4B-04: Withdrawn
    12/07/2023, 17:00
  5. 649. C3Or4B-05: Discussions of real gas effects on the regenerative refrigerators
    Prof. Qiang Cao (Tongji University)
    12/07/2023, 17:15
    CEC-12 – Fundamentals: Thermal Properties and Theory/Numerical Studies
    Contributed Oral

    Practical regenerative refrigerators are capable of working down to 4 K and largely fulfill the refrigeration requirement of modern technologies in many fields, especially for space applications. However, the enthalpy flow associated with the pressure dependence, abbreviated as pressure-induced enthalpy flow, brought about by real gas effects degrades the theoretical COP of the refrigerator to...

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