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  1. No Access

    Chapter

    Design and Performance of Forced-Flow HeII Heat Exchangers

    HeII heat exchangers are used in systems requiring near absolute-zero temperatures. A unique characteristic of superfluid helium is its strong internal convection, which prevents the existence of pronounced te...

    A. Shajii, Y. Huang, M. Daugherty, R. J. Witt… in Advances in Cryogenic Engineering (1990)

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    Chapter

    A Thin Film Flowmeter for use in Liquid Helium II

    A novel flowmeter design has been investigated for the metering of liquid He II bulk flows in small channels. The flowmeter consists of a thin film heater with thin film temperature sensors located upstream an...

    D. Scott Holmes, S. W. Van Sciver in Advances in Cryogenic Engineering (1990)

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    Chapter

    Pressure Drop of He II Flow Through a Porous Media

    The behavior of liquid helium in porous materials continues to be of interest for the purpose of helium fluid management in a weightless environment. The present paper reports on measurements of He II pressure...

    J. R. Maddocks, S. W. Van Sciver in Advances in Cryogenic Engineering (1990)

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    Chapter

    Characterization of a Centrifugal Pump in He II

    As part of an effort to determine the feasibility of helium transfer in space a centrifugal pump was tested in He II at a variety of flow rates, pump speeds and fluid temperatures. The pump which has a straigh...

    J. G. Weisend II, S. W. Van Sciver in Advances in Cryogenic Engineering (1988)

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    Chapter

    Application of a Square Function Heat Pulse to Forced Flow He II

    The present is the third report on a series of experiments involving forced convection heat transfer in He II. A square function heat pulse is applied to the middle of a copper flow tube, 3 mm in diameter and ...

    A. Kashani, S. W. Van Sciver in Advances in Cryogenic Engineering (1988)

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    Chapter

    Metastable Heat Flow Phenomena and Droo** Pressure Differences in He II Using Multiple Channel Configurations

    Superheating of liquid helium from the He II phase up to 3.0 K is demonstrated in one dimensional multiple channel configurations at pressures below the lamda point pressure. The individual channels have diame...

    B. P. M. Helvensteijn, S. W. Van Sciver in Advances in Cryogenic Engineering (1988)

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    Chapter

    Evolution of Normal Zones and Temperature in a Superconductor Cooled Internally with Helium-II

    In an effort to understand the stability mechanisms of internally cooled superconductors in the He II regime, measurements are made on a hollow composite superconductor open at both ends to a bath of subcooled...

    E. R. Canavan, S. W. Van Sciver in Advances in Cryogenic Engineering (1988)

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    Chapter

    Fabrication and Performance of an Aluminum-Stabilized Composite Superconductor

    In a number of cases,1,2 practical superconductors have been fabricated with aluminum as the chief stabilizer. Aluminum was chosen because it is lightweight, can be readily purified to a high degree for modest co...

    K. T. Hartwig, P. Zolliker, D. Yu… in Advances in Cryogenic Engineering Material… (1982)