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Performances en régime permanent des tubes capillaires pour les systèmes de compression de vapeur à petite échelle utilisant différents frigorigènes.

Steady-state performance of capillary tubes for small-scale vapour compression systems using different refrigerants.

Auteurs : HMOOD K. S., POP H., APOSTOL V., AL QAISY S., BADESCU V.

Type d'article : Article de la RIF

Résumé

The operational performance of small-scale refrigeration systems is mainly decided by their capillary tubes outlet parameters, wherein an accurate determination of the pressure and vapour quality is a prerequisite. Experiments have been performed for a capillary tube (CT) with specified geometry consisting of a straight, a helical and a suction line heat exchanger (SLHX) section. The capillary tube is incorporated in a small refrigeration system operated with R600a. In addition, a model was developed to determine the steady-state operation of the capillary tubes (activated with R134a, R1234yf, R1234ze(E), R600, R600a, R152a and R513A refrigerants) and validated. The highest and lowest value of the vapour quality was discerned to be 0.3132 (for R1234yf) and 0.2124 (for R600), respectively. The relative errors between the experimental and model results for the CT outlet pressure and temperature were ranged from 1.16 to 5.35% and 0.12–0.81%, respectively. It is asserted that the present strategy may contribute towards the precise estimation of the pressure and vapour quality to customize the working performance of small scale refrigeration systems.

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Format PDF

Pages : 87-98

Disponible

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    20 €

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    Gratuit

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Détails

  • Titre original : Steady-state performance of capillary tubes for small-scale vapour compression systems using different refrigerants.
  • Identifiant de la fiche : 30029060
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 130
  • Date d'édition : 10/2021
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2021.06.015
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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