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CEC-ICMC 2017 - Abstracts, Timetable and Presentations

9–13 Jul 2017
Monona Terrace Community and Convention Center
US/Central timezone

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Session

C1OrA - JT & Reverse Brayton Coolers (Non-Aerospace)

C1OrA
10 Jul 2017, 11:00
Monona Terrace Community and Convention Center

Monona Terrace Community and Convention Center

Madison, Wisconsin USA

Conveners

C1OrA - JT & Reverse Brayton Coolers (Non-Aerospace)

  • Mark Zagarola (Creare LLC)
  • Marcel ter Brake (University of Twente)

Presentation materials

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  1. 429. Test Results on TRL5 Vibration-free Sorption-based Cooler for 15 – 30 K
    Marcel ter Brake (University of Twente, The Netherlands)
    10/07/2017, 11:00
    Contributed Oral Presentation

    At the University of Twente, a vibration-free hydrogen-based sorption cooler is under development for cooling optical detectors in future scientific space missions. Depending on the operating pressures in the system, the cooler can be used can be used as stand-alone or as a precooling stage for a helium cooler establishing 4 K. In an earlier ESA project, a hydrogen-based sorption cooler was...

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  2. 420. Study of reverse Brayton cryocooler with helium-neon mixture for HTS cable
    Mr Aman Kumar Dhillon (Indian Institute of Technology Kharagpur)
    10/07/2017, 11:15
    Contributed Oral Presentation

    As observed in the earlier studies, helium is more efficient than neon as a refrigerant in a reverse Brayton cryocooler (RBC) from the thermodynamic point of view. However, the lower molecular weight of helium leads to higher refrigerant inventory as compared to neon. Thus helium is suitable to realize the high thermodynamic efficiency of RBC whereas neon is suitable for the compactness of the...

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  3. 432. Performance of an ejector for application in a nitrogen JT cycle: experimental and numerical analysis
    Marcel ter Brake (University of Twente)
    10/07/2017, 11:30
    Contributed Oral Presentation

    The performance of a Joule Thomson (JT) cryocooler can be improved by introducing an ejector into the JT cooling cycle. The function of the ejector is to lift the pressure of the gas leaving the evaporator to a higher level, thus reducing the cold-end temperature and/or the input power of the compressor. In this paper, the performance of an ejector operating with nitrogen gas is investigated...

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  4. 269. Intrinsic limitation on the cooling power of the JT cryocoolers
    Mr Dongli Liu (Zhejiang University)
    10/07/2017, 11:45
    Contributed Oral Presentation

    Several precooled JT cryocoolers (JTC) working at 4 K have been developed for space missions. Although these cryocoolers are qualified with high reliability and long life time, their efficiencies are relatively low which is worth further research.
    A JT cryocooler has an intrinsic limitation on its cooling power. The intrinsic limitation is that the JTC will be warmed up continuously when the...

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