Résumé
This paper proposes a method for establishing improved guidelines regarding the use of refrigerant blends that contain a flammable component. This approach was verified in a test chamber under realistic refrigerating equipment leak scenarios. First, the paper provides an overview of the safety classification described in ANSI/ASHRAE Standard 34-2007, Designation and Safety Classification of Refrigerants (ASHRAE 2007) and its international equivalent ISO Standard 817-2006, Refrigerants - Designation and Safety Classification (ISO 2006). The refrigerant blends examined were A1, as formulated, and A2, at the "worst-case fractionated formulation," as defined by ASHRAE Standard 34-2007. The blend is prepared in a cylinder and is then slowly leaked inside a test chamber of 1 m3 (35.31 ft3). At the beginning of the leak, the gas phase occupies 10% of the cylinder volume, corresponding to one of the leak scenarios featured in ISO Standard 817-2006. The concentrations inside the test chamber are measured by gas chromatography. In addition, this paper provides the algorithm of calculation of a computer code named Room_leak, which simulates leaks of any refrigerant blends in realistic scenarios.
Détails
- Titre original : A method for determining practical flammability risk when using refrigerant blends.
- Identifiant de la fiche : 2010-0043
- Langues : Anglais
- Source : HVAC&R Research - vol. 15 - n. 5
- Date d'édition : 09/2009
Liens
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Indexation
- Thèmes : Mélanges
- Mots-clés : Sécurité; Calcul; Anomalie; Mélange; Inflammabilité; Frigorigène
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Search of new A2 refrigerant mixtures. Possibil...
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- Date : 13/06/2022
- Langues : Anglais
- Source : 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
- Formats : PDF
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Modification of flammability limits correlation...
- Auteurs : LI Z. M., GONG M. Q., WU J. F., et al.
- Date : 05/04/2008
- Langues : Anglais
- Source : Cryogenics and refrigeration. Proceedings of ICCR'2008.
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State of the art on the flammability of hydrofl...
- Auteurs : WU X., DANG C., XU S., et al.
- Date : 12/2019
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 108
- Formats : PDF
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Les frigorigènes inflammables
- Auteurs : IIF-IIR, COLBOURNE D.
- Date : 12/2017
- Langues : Anglais, Français
- Formats : PDF
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Hacia la búsqueda de mezclas refrigerantes A2 d...
- Auteurs : CALLEJA-ANTA D., NEBOT-ANDRÉS L., MARTINEZ-ANGELES M., CABELLO R., SÁNCHEZ D., LLOPIS R.
- Date : 04/2022
- Langues : Espagnol
- Source : XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2022.
- Formats : PDF
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