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Mesures des propriétés thermophysiques d'un mélange R1234yf + R1234ze(E).

Thermophysical property measurements for R1234yf + R1234ze(E) mixture.

Numéro : pap. n. 679

Auteurs : HIGASHI Y.

Résumé

Measurements of P?Tx properties, saturated densities and critical parameters for low GWP refrigerant mixtures of 50.00 mass% R1234yf (2,3,3,3-tetrafluoroprop-1-ene; CF3CF=CH2) + 50.00 mass% R1234ze(E) (trans-1,3,3,3-tetrafluoroprop-1-ene; CF3CH=CHF) system were measured with two types of isochoric methods. As for P?Tx properties, 5 isochores were obtained in the range of temperatures from 310 K to 430 K, of pressures from 837 kPa to 6774 kPa, and of densities from 100 kg·m-3 to 900 kg·m-3. As for the saturated densities, 9 saturated vapor densities and 6 saturated liquid densities were measured for temperatures from 354.622 K to 374.280 K and for densities between 219 kg·m-3 and 870 kg·m-3. On the basis of the present data, the critical temperature Tc = 374.28 K, critical density ?c = 480 kg·m-3, and critical pressure Pc = 3524 kPa for 50% R 1234yf + 50% R 1234ze(E) mixture were determined by the direct observation of meniscus disappearance.

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Pages : 8 p.

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Détails

  • Titre original : Thermophysical property measurements for R1234yf + R1234ze(E) mixture.
  • Identifiant de la fiche : 30015586
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0679

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