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Quantitative risk assessment of R290 in ice cream cabinets / D. Colbourne in International journal of refrigeration, Vol. 36 N° 4 (Juin 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 4 (Juin 2013) . - pp. 1208–1219 Titre : Quantitative risk assessment of R290 in ice cream cabinets Titre original : Evaluation quantitative des risques associés à l'utilisation du R290 dans les meubles frigorifiques de vente utilisés pour les crèmes glacées Type de document : texte imprimé Auteurs : D. Colbourne, Auteur ; L. Espersen, Auteur Année de publication : 2013 Article en page(s) : pp. 1208–1219 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Hydrocarbon;  Refrigerant;  R290;  Propane;  Flammability;  Risk  analysis;  Ignition Résumé : This study addresses the flammability risk of hydrocarbon (HC) refrigerants within horizontal type ice cream cabinets (ICC). Quantitative risk assessment (QRA) is used to estimate the likelihood of ignition of leaked refrigerant and severity of the consequences. Variables were evaluated including effect of room size, positioning of ICC, compressor compartment fan airflow and ignition source distribution. To strengthen the QRA, tests were carried out for refrigerant leakage and effects of ignition to validate dispersion and consequence models. Ignition frequency is between 1 × 10−8 and 2 × 10−13 per year. The maximum overpressure and thermal intensity within the room is 3 kPa and 200 s (kW m−2)4/3, respectively and 6.5 kPa and 20 s (kW m−2)4/3 from within the compressor compartment. The risks were found to be negligible compared to background and other reference values. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712002964 [article] Quantitative risk assessment of R290 in ice cream cabinets = Evaluation quantitative des risques associés à l'utilisation du R290 dans les meubles frigorifiques de vente utilisés pour les crèmes glacées [texte imprimé] / D. Colbourne, Auteur ; L. Espersen, Auteur . - 2013 . - pp. 1208–1219. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 4 (Juin 2013) . - pp. 1208–1219 Mots-clés : Hydrocarbon;  Refrigerant;  R290;  Propane;  Flammability;  Risk  analysis;  Ignition Résumé : This study addresses the flammability risk of hydrocarbon (HC) refrigerants within horizontal type ice cream cabinets (ICC). Quantitative risk assessment (QRA) is used to estimate the likelihood of ignition of leaked refrigerant and severity of the consequences. Variables were evaluated including effect of room size, positioning of ICC, compressor compartment fan airflow and ignition source distribution. To strengthen the QRA, tests were carried out for refrigerant leakage and effects of ignition to validate dispersion and consequence models. Ignition frequency is between 1 × 10−8 and 2 × 10−13 per year. The maximum overpressure and thermal intensity within the room is 3 kPa and 200 s (kW m−2)4/3, respectively and 6.5 kPa and 20 s (kW m−2)4/3 from within the compressor compartment. The risks were found to be negligible compared to background and other reference values. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712002964