Coefficient diélectrique et densité d'hydrogène liquide sous-refroidi.

Dielectric coefficient and density of subcooled liquid hydrogen.

Auteurs : CHARIGNON T., CELIK D., HEMMATI A., et al.

Type d'article : Article


The authors present precision dielectric coefficient measurements of subcooled equilibrium liquid hydrogen in the temperature range from 15 to 23 K and under pressures up to 1 MPa. The measurements were performed using a three-terminal flat plate capacitor and a single-frequency, ultra-precision capacitance bridge. These results are combined with the previously published data to express the dielectric coefficient in the form of the Clausius-Mossotti relation with a new correlation. The results reported in this paper are expected to be especially useful for capacitance-based measurements involving fluid hydrogen such as liquid level, mass gauging and void fraction measurements in two phase flow. Also, a new equation of state gives the density as a function of pressure and temperature for the subcooled liquid phase. [Reprinted with permission from Elsevier. Copyright, 2007].


  • Titre original : Dielectric coefficient and density of subcooled liquid hydrogen.
  • Identifiant de la fiche : 2007-1821
  • Langues : Anglais
  • Source : Cryogenics - vol. 47 - n. 4
  • Date d'édition : 04/2007


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