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Constante diélectrique et densité de l'oxygène sous-refroidi.

Dielectric coefficient and density of subcooled liquid oxygen.

Auteurs : CELIK D., SCIVER S. W. van

Type d'article : Article

Résumé

The results of high precision dielectric coefficient measurements of subcooled liquid oxygen in the temperature range from 56 to 91 K and under pressures up to 1 MPa are reported. The measurements are performed using a three-terminal flat plate capacitor and a single-frequency, ultra-precision capacitance bridge. Measurement results are combined with the previously published data in different pressure and/or temperature ranges to express the dielectric coefficient and the Clausius-Mossotti relation in an equation form. This new expression covers both the liquid and the gaseous state, and predicts the density of oxygen to better than 0.1% over the entire range of interest. The results reported in this paper are expected to be especially useful for capacitance-based measurements involving fluid oxygen such as liquid level and void fraction measurements of two phase flow.

Détails

  • Titre original : Dielectric coefficient and density of subcooled liquid oxygen.
  • Identifiant de la fiche : 2005-2404
  • Langues : Anglais
  • Source : Cryogenics - vol. 45 - n. 5
  • Date d'édition : 05/2005

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