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Taille des points de fuite des systèmes frigorifiques, de conditionnement d'air et des pompes à chaleur.

Leak hole sizes from refrigeration, air conditioning and heat pump systems.

Auteurs : COLBOURNE D., PITARCH MOCHOLI M., MUNZINGER P., OPPELT D., PAETZOLD B., VINCE I.

Type d'article : Article de la RIF

Résumé

Knowledge of sizes of leak holes arising in refrigeration, air conditioning and heat pump systems is critical for safe application of flammable refrigerants, especially hydrocarbons such as R290. Data for leak hole sizes is currently lacking so safety standards have used a range of assumed leak rates that maybe unreasonable and lead to severe restrictions on charge limits and/or high costs for addressing potential ignition sources. Over 1000 leak holes have been measured from various systems. The leak hole areas were found to be clustered around very small values with more than 90% below 0.10 mm2 and 98.8% smaller than 1.0 mm2, irrespective of type, age and size of the system. The largest leak hole size that should be considered for safe design of systems is around 0.5 mm2, or about 70 g min−1 of R290 vapour or adjusted according to the system operating conditions or type of refrigerant.

Documents disponibles

Format PDF

Pages : 559-567

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 : Leak hole sizes from refrigeration, air conditioning and heat pump systems.
  • Identifiant de la fiche : 30029160
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 131
  • Date d'édition : 11/2021
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2021.07.003
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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