Industry Directory 2016 | Page 186

186

AIRAH

Common refrigerant performance characteristics
Refrigerant properties are necessary to describe the operating characteristics of the refrigerant within
the system. Thermodynamic and transport properties of refrigerants are necessary for predicting system
behaviour and component performance. The following table provides the basic performance properties
of common halogenated and natural refrigerants:

Mol. Mass:
(kg/kmol)

Freezing Point:
(°C)

R22
R123
R124
R401A
R401B
R401C
R402A
R402B
R403A
R403B
R405A
R406A
R408A
R409A
R409B
R411A
R411B
R412A
R416A
R509A

86.48
152.93
136.47
99.44
92.84
101.0
101.6
94.71
91.99
103.26
111.9
89.86
87.01
97.43
96.67
82.36
83.07
92.17
111.9
123.96

-160
-107.15
-199.15
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—

R125
R134a
R404A
R407A
R407B
R407C
R410A
R413A
R417A
R507A

120.2
102.03
97.60
90.11
102.94
86.20
72.59
103.95
106.70
98.86

-100.63
-103.3
—
—
—
—
—
—
—
—

R170
R290
R600
R600a
R717
R744
R1270

30.07
44.10
58.12
58.12
17.03
44.01
42.08

-182.8
-187.3
-138.3
-159.6
-77.7
-56.6(A)
-185.2

Refrigerant:

Normal Boiling
Point at 1 Atm:
(°C)

Critical
Temperature:
(°C)

Critical
Pressure:
(kPa, abs)

-40.76
27.82
-11.96
-34.4
-35.7
-22.9
-49.2
-47.2
-44.0
-43.8
-32.9
-32.7
-45.5
-35.4
-36.5
-39.7
-41.6
-36.4
-24.7
-40.4

96.0
183.68
122.3
105.3
103.5
109.9
76.03
83.0
91.2
88.7
106.0
116.5
83.3
106.9
104.4
99.1
96.0
107.5
111.9
87.2

4,974
3,662
3,624
4,613
4,682
4,402
4,234
4,525
4,690
4,400
4,292
4,883
4,424
4,699
4,711
4,954
4,947
4,880
4,015
4,030

-48.14
-26.07
-46.6
-45.2
-46.8
-43.8
-51.6
-29.3
-41.8
-47.1

66.2
101.1
72.1
81.9
74.4
86.1
70.2
101.4
89.9
70.8

3,629
4,059
3,735
4,487
4,083
4,634
4,770
4,240
4,096
3,715

32.2
96.7
152.0
134.7
132.5
31.1
92.4

4,872
4,248
3,796
3,640
11,330
7,384
4,665

HCFCs:

HFCs:

Natural Refrigerants:
-88.6
-42.1
-0.5
-11.6
-33.3
-78.4(B)
-47.7

NOTES:
A) Freezing Point of R744(A) condition is for 527 kPa (the triple point). (B) Sublimation at 1 Atmosphere
Source: Air Conditioning and Refrigeration Industry Refrigerant Selection Guide, 2003, AIRAH