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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

• Standardisation 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.

R452B

R452B is a HFO/HFC blend (R32: 67%; R125: 7%; R1234yf: 26%) with a zero Ozone Depletion Potential(ODP=0) and a

low Global Warming Potential (GWP: 676/AR5 ; 698/AR4). It is a near-azeotropic mixture with a temperature glide

around 1 K.

R452B has very close capacities versus R410A and due to its very limited discharge temperature dierence it

appears today as the best candidate for a direct drop in of R410A.

R452B 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.

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

Scroll compressors, DSH090 to DSH600 | Refrigerants

Danfoss DSH Series Application Guide

Other manuals for Danfoss DSH Series