SiE33-003
Refrigerant and Refrigerant Oil Characteristics
New Refrigerant R-407C
171
3. Refrigerant and Refrigerant Oil Characteristics
3.1
Refrigerant Characteristics
Main characteristics of R-407C and R410A refrigerants are shown in the following table.
1. ODP (ozone destruction factor) : Indicated values are relative value with that of R11 as 1.
GWP (global warming factor) : indicated values are relative value with that of CO2 as 1.
2. Temperature conditon : 50˚C
3. Temperature condition : 0/50˚C
4. Boiling point condition : Temperatures at which R-407C begin boiling under the atmospheric pressure
(1 atm)
R-407C
R22
Chemical formula
CH
2
F
2
/C
2
HF
5
/CH
2
FCF
3
CHCIF
2
Composition (mixing ratio, wt%)
HFC32/125/134a (23/25/52)
Boiling point (˚C)
–43.6
4
–40.8
ODP
1
0
0.05
GWP
1
1530
1700
Pressure
2
(physical characteristic)
110
4
100
Capacity
3
(physical characteristic)
98
100
COP
3
(physical characteristic)
95
100
Azeotropy/
non-azeotropy
Non-azeotropic
(Single component)
Flammability
Nonflammable
Nonflammable
Evaluation
(comparison with R22)
Pressure is approximately 10%
higher than that of R22.
Capacity is about the same. Since
it is non-azeotropic, it must be
handled with utmost caution.
(Mishandling causes the
composition to change.)
Si33-003.book Page 171 Monday, June 25, 2001 9:06 AM
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