Precautions for New Refrigerant (R-410A)
1. Precautions for New Refrigerant (R-410A)
1.1
Outline
1.1.1 About Refrigerant R-410A
Characteristics of new refrigerant, R-410A
1. Performance
2. Pressure
3. Refrigerant composition
1. Non-azeotropic mixture refrigerant: mixture of two or more refrigerants having different boiling
2. Quasi-azeotropic mixture refrigerant: mixture of two or more refrigerants having similar boiling
3. The design pressure is different at each product. Please refer to the installation manual for each
280
Almost the same performance as R-22 and R-407C
Working pressure is approx. 1.4 times more than R-22 and R-407C.
Few problems in composition control, since it is a Quasi-azeotropic mixture refrigerant.
Refrigerant name
Non-azeotropic mixture of
Composing
HFC32, HFC125 and
substances
HFC134a (*1)
3.2 MPa (gauge pressure) =
Design pressure
32.6 kgf/cm
Refrigerant oil
Ozone destruction
factor (ODP)
Combustibility
Toxicity
points.
points.
product.
(Reference) 1 MPa
10.19716 kgf / cm
HFC units (Units using new refrigerants)
R-407C
Quasi-azeotropic mixture of
HFC32 and JFC125 (*1)
4.0 MPa (gauge pressure)
2
= 40.8 kgf/cm
Synthetic oil (Ether)
0
None
None
2
Pressure-Enthalpy curves of HFC-32/125 (50/50wt%)
HCFC units
R-410A
Single-component
refrigerant
2.75MPa (gauge pressure) =
2
28.0 kgf/cm
Mineral oil (Suniso)
0
None
None
Precautions for New Refrigerant (R-410A)
ESIE09-08A
R-22
2
0.05
None
None