Partager

Document IIF

Expérience à échelle réelle pour évaluer le risque de combustion des frigorigènes à faible potentiel de réchauffement planétaire dans un scénario d'accident hypothétique.

Full-scale experiment to evaluate the combustion hazard of refrigerants with low global-warming potential in a conceivable accident scenario.

Auteurs : IMAMURA T., YOSHIDA Y., OTA Y., et al.

Type d'article : Article, Article de la RIF

Résumé

A full-scale experiment based on a realistic foreseeable leak accident scenario was conducted with two refrigerants with low global-warming potential (GWP). The assumed accident scenario was that of the leakage of low-GWP refrigerant from a variable-refrigerant-flow air-conditioning system into a general narrow karaoke space, with an open flame present in the region where the low-GWP refrigerant accumulated. Even in the absence of mechanical ventilation, neither ignition nor flame propagation occurred if the amount of "LFL equivalent", that the calculated interior concentration corresponded to the lower flammable limit, was leaked and mixed sufficiently. Even when the leak amount was "UFL equivalent", that the calculated interior concentration corresponded to the upper flammable limit, ignition and flame propagation could be prevented by means of a suitable ventilation system. The maximum pressure rise was 4–6?kPa. Finally, no transition from laminar combustion to turbulent combustion was observed.

Documents disponibles

Format PDF

Pages : 461-469

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 : Full-scale experiment to evaluate the combustion hazard of refrigerants with low global-warming potential in a conceivable accident scenario.
  • Identifiant de la fiche : 30022323
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 82
  • Date d'édition : 10/2017
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.06.004

Liens


Voir d'autres articles du même numéro (42)
Voir la source

Indexation