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A lower GWP option for flooded systems

1234zeUSA: A new non-flammable, lower GWP Honeywell refrigerant could have applications in flooded chillers.

A member of Honeywell’s Solstice family, the refrigerant has been submitted for addition to ANSI/ASHRAE Standard 34-2013, Designation and Safety Classification of Refrigerants as R515A.

Also offering a non-flammable alternative to R134a in domestic refrigerators in the USA, R515A comprise the HFO 1234ze(E) with 12% of the fire suppressant HFC227ea (heptafluoropropane).

Submitted for acceptance as ASHRAE class A1, R515A has a GWP of around 400 and is expected to be compatible with Solstice ze approved compressors.

As an azeotrope, it could also be used in flooded chillers, an application where, until now, there has been no non-flammable, lower GWP alternatives.

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