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Electroacoustic method for gas viscosity measurements.

Author(s) : COPPI M., SANTOLI L. de, SANTOBONI S.

Summary

A new method for gas viscosity measurements has been studied, evaluating the sound pressure drop across a capillary tube filled with tested gas. In order to satisfy the physical conditions which allow to assume the acoustical impedance of the tube as a pure resistance, a low frequency value (less than 50 hertz) and a small tube diameter (less than 0.5 mm) have been used. The main advantages are: no restriction about the compressible gas, steady state measurements and no static strains on the capillary tube due to the alternative excitation. A calibration of the system and a validation using a reference refrigerating system is carried out.

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Pages: p 443-449

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Details

  • Original title: Electroacoustic method for gas viscosity measurements.
  • Record ID : 1995-1537
  • Languages: English
  • Source: CFCs, the Day After.
  • Publication date: 1994/09/21
  • Document available for consultation in the library of the IIR headquarters only.

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