Partager

Mesure la vitesse de propagation du son dans le 2,3,3,3-tétrafluoropropène (HFO-1234yf).

Speed of sound measurement for 2,3,3,3-tetrafluoropropene (HFO-1234yf).

Numéro : pap. P03

Auteurs : KANO Y., KAYUKAWA Y., FUJII K., et al.

Résumé

The authors measured the speed of sound for HFO-1234yf in the gaseous phase on the basis of the acoustic resonance method using a spherical cavity. The sound speed can be determined by measuring the acoustic resonant frequency response in the spherical resonator. The sample gas is filled in the resonator, then a condenser microphone transmits audio frequency sound signal into the resonator. The sound wave propagating in the sample gas is detected by another condenser microphone and its amplifier and phase shift are measured with a lock-in-amplifier. The frequency of the sound wave is swiped by controlling a frequency synthesizer, so the resonant frequency response can be obtained. By correcting some perturbations such as the thermal boundary layer, the measurement uncertainty of the sound speed achieves better than 0.01%. Based on the measured sound speed data, the acoustic-virial equation was formulated and the isobaric heat capacity in ideal gas state was determined with a relative uncertainty of 0.1%.

Documents disponibles

Format PDF

Pages : 6 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Speed of sound measurement for 2,3,3,3-tetrafluoropropene (HFO-1234yf).
  • Identifiant de la fiche : 30000598
  • Langues : Anglais
  • Source : Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
  • Date d'édition : 17/02/2010

Liens


Voir d'autres communications du même compte rendu (75)
Voir le compte rendu de la conférence

Indexation