• Accueil
  • Publications

  • Investigation of the variability in the measure...

Document IIF

Investigation of the variability in the measurement of cyclic degradation coefficient of air conditioning systems.

Étude de la variabilité dans le mesurage du coefficient de dégradation cyclique des systèmes de conditionnement d’air.

Auteurs : DHUMANE R., QIU T., LING J., AUTE V., HWANG V., RADERMACHER R., KIRKWOOD A. C., ESFORMES J.

Type d'article : Article de la RIF

Résumé

The variation in the cyclic performance of air conditioning systems (conforming with the latest rating standards) is investigated. Two code testers of very different sizes but meeting the standards’ requirements are used to evaluate the cyclic degradation coefficient (Cd) for the same air conditioner. The measured Cd from the two code testers shows a deviation of about 20%. A validated Modelica model is used to analyze the code testers’ thermal inertia as it is suspected to be a significant contributor. A new parameter called “thermal inertia factor” is defined to account for these thermal inertia effects on the measured Cd. However, all the deviations in Cd are not resolved at this point. The measurement uncertainty is simulated with the Monte Carlo method and discovered to be a critical contributor to the Cd deviation. The current study is the first of its kind and is expected to facilitate improved test procedures by accounting for the variations arising from differences in code tester designs at different laboratories.

Documents disponibles

Format PDF

Pages : 1-11

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 : Investigation of the variability in the measurement of cyclic degradation coefficient of air conditioning systems.
  • Identifiant de la fiche : 30028511
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 128
  • Date d'édition : 08/2021
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2021.04.008
  • Disponible à la bibliothèque de l'IIF

Liens


Voir d'autres articles du même numéro (26)
Voir la source