Changes Required by New Refrigerants
SiE33-003
170
New Refrigerant R-407C
2. Changes Required by New Refrigerants
2.1
Changes Required by New Refrigerant
The following two types of refrigerant are being used in place of the HCFC22 (R22) refrigerant.
Main differences in specification are pressure difference (higher) and compatible refrigerant oil type.
1
Non-azeotropic mixture refrigerant ; mixture of two or more refrigerants having different boiling points.
1Mpa : Approx. 10.19716kgf/cm
²
HFC units (Units using new refrigerants)
HCFC units
Refrigerant name
R-407C
R22
Main application
Packaged air conditioners
Room air conditioners
Packaged air conditioners
Composing
substances
Non-azeotropic mixture
1 of HFC32,
HFC125 and HFC134a
Single-component refrigerant
Design pressure
3.2MPa (gauge pressure)=32.6kgf/cm
²
2.75Mpa(gauge pressure)=28.0kgf/cm
²
Refrigerant oil
Synthetic oil (ether)
Mineral oil (suniso)
Ozone destruction
factor (ODP)
0
0.05
Combustibility
None
None
Toxicity
None
None
Si33-003.book Page 170 Monday, June 25, 2001 9:06 AM
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