Partager

Document IIF

Effets des températures sur les paramètres dynamiques d'une machine de Vuilleumier avec mouvement de came basé sur un modèle numérique du troisième ordre développé.

Effects of temperatures on dynamic parameters of Vuilleumier machine with dwell motion based on developed third-order numerical model.

Auteurs : ZHANG L., GUAN J., LUO B., LIU J., HUANG Y., HOFBAUER P.

Type d'article : Article de la RIF

Résumé

Vuilleumier machine with dwell motion provides huge potential for energy savings in residential heating. However, its efficient operation depends on free stroke. In this work, dynamic characteristics of Vuilleumier machine with dwell motion are studied. Firstly, a third-order numerical model based on one-dimensional computational fluid dynamics is developed for Vuilleumier machine with dwell motion. Secondly, experiments on dynamic performances are conducted to validate the model. The comparisons indicate that simulation results match well with experimental results. Thirdly, damping coefficient Cd and spring coefficient K are studied at various conditions. Quantitative and qualitative effects of Th, Tw and Tc on Cd and K are analyzed and obtained. The results show that variations of Cd and K at given conditions are in the range of 8.71% ∼ 9.38% and 7.78% ∼ 19.54% respectively. Moreover, predicted free strokes based on obtained Cd and K have high accuracy with less than 2% error. The results provide reference for design and control of Vuilleumier machine with dwell motion.

Documents disponibles

Format PDF

Pages : 214-224

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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

Détails

  • Titre original : Effects of temperatures on dynamic parameters of Vuilleumier machine with dwell motion based on developed third-order numerical model.
  • Identifiant de la fiche : 30030902
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 146
  • Date d'édition : 02/2023
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.11.001

Liens


Voir d'autres articles du même numéro (41)
Voir la source

Indexation