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Évaluation en laboratoire du R407H pour le froid commercial.

Laboratory evaluation of R407H for commercial refrigeration.

Numéro : pap. 2603

Auteurs : RYDKIN I., OHKUBO S., ARIMOTO H., et al.

Résumé

Globally and in the US the commercial refrigeration industry is in a transition to refrigerants below a global warming potential of 1500 to meet regulatory requirements. A Class A1 refrigerant blend in the R407 series was developed, R407H, to meet this requirement for commercial refrigeration applications. To evaluate the performance of the blend in medium and low temperature conditions a comparison was performed at Creative Thermal Solutions (Urbana, IL). The laboratory was instrumented to ASHRAE 72 standard requirements and consists of varying capacity, VFD controlled, tandem scroll compressors, coupled with a controlled condenser and running a set of 5 cases with a combined LT load of 2.98kW and combined medium temperature load of 7.86kW. The equipment selected was standard R22/R404A equipment. The system was baselined with R22 and a comparison was made to R404A, and R407H. System effects due to glide, such as frosting, condenser and evaporator efficiency were analyzed and potential control parameters proposed and evaluated. It was determined that R407H utilizing traditional R407 refrigerant chemistry without any additional HFO, Hydrocarbon or CO2 components is suitable as a replacement for existing R22 and R404A systems reaching expected efficiency targets at the target GWP.

Documents disponibles

Format PDF

Pages : 8

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Laboratory evaluation of R407H for commercial refrigeration.
  • Identifiant de la fiche : 30024668
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 09/07/2018

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