Refrigerants; General Information; R410A; R454B - Danfoss PSH052 Application Manual

Scroll compressors PSH052 to PSH105 | Refrigerants

Refrigerants

General Information

When choosing a refrigerant, di erent aspects must be taken into consideration:
• Legislation (now and in the future)
• Safety
• Application envelope in relation to expected running conditions
• Compressor capacity and e ciency
• Compressor manufacturer recommendations & Guidelines
Additional points could in uence the nal choice:
• Environmental considerations
• Standardization of refrigerants and lubricants
• Refrigerant cost
• Refrigerant availability

R410A

R410A is a HFC blend (R32: 50%; R125: 50%) with a zero Ozone Depletion Potential (ODP=0) and a Global Warming
Potential of 1924/AR5 (2088/AR4). It is a near-azeotropic mixture with a temperature glide less than 0.2 K.
With its high net refrigeration e ect coupled to a high density, the R410A has appeared in last decade to be the
preferred refrigerant for use in commercial air conditioners and heat pumps.

R454B

R454B is a HFO/HFC blend (R32 :68.9%; R1234yf: 31.1%) with a zero Ozone Depletion Potential (ODP=0) and a low
Global Warming Potential (GWP: 467/AR5; 466/AR4). It is a near-azeotropic mixture with a temperature glide around
1 K.
R454B has very close match to R410A in terms of capacity and discharge temperature di erence, and it o ers better
e ciencies compared to R410A.
R454B is classi ed A2L with low ammability properties. Please refer to European regulations and directives about
the use of refrigerant of the A2L safety group (EN378, EN60335). Outside Europe refer to the local regulation
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