Partager

Document IIF

Évaluation du volume inflammable en cas de fuite catastrophique de R-32 d'une unité de toiture.

Evaluation of flammable volume in the case of a catastrophic leak of R-32 from a rooftop unit.

Auteurs : ELATAR A., ABU-HEIBA A., PATEL V., et al.

Type d'article : Article, Article de la RIF

Résumé

With the effort to use alternative refrigerants with lower global warming potential (GWP), the majority of these alternative refrigerants are classified as slightly flammable. In this paper we report on the numerical evaluation of a catastrophic leak scenario of R-32 refrigerant from a 3-ton roof top air conditioning unit (RTU) which serves a 12.2?×?9.14?×?2.4?m room. A full rupture of a 6.35?mm (¼ inch) pipe downstream of the evaporator coil is simulated. Two separate cases with refrigerant releases of 1.81?kg and 3.62?kg charge have been studied. The two charges are released in 10.2 and 20.4 s, respectively, just after the end of a unit cooling cycle. The flammable volume inside the room existed only for about 40 s with a maximum flammable volume inside the room of 1.12% of the total room volume for the 3.62?kg charge case.

Documents disponibles

Format PDF

Pages : 39-45

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 : Evaluation of flammable volume in the case of a catastrophic leak of R-32 from a rooftop unit.
  • Identifiant de la fiche : 30023987
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 91
  • Date d'édition : 07/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.04.024

Liens


Voir d'autres articles du même numéro (25)
Voir la source

Indexation