Refrigerant Line Capacities for 134a

HVAC Systems & Components

Refrigerant Line Capacities for 134a

Tons for 100 ft. - Type L. Copper, Suction Lines, Δt = 2°F

Saturated Suction Temp. °F/Δp
Discharge Lines
Δt 1°F
Liquid Lines
Size
0
10
20
30
40
0
Δt 1°F
O.D.
1.00
1.19
1.41
1.66
1.93
1/2
0.14
0.18
0.23
0.29
0.35
0.54
2.79
5/8
0.27
0.34
0.43
0.54
0.66
1.01
5.27
7/8
0.71
0.91
1.14
1.42
1.75
2.67
14.00
1-1/8
1.45
1.84
2.32
2.88
3.54
5.40
28.40
1-3/8
2.53
3.22
4.04
5.02
6.17
9.42
50.00
1-5/8
4.02
5.10
6.39
7.94
9.77
14.90
78.60
2-1/8
8.34
10.60
13.30
16.50
20.20
30.80
163.00
2-5/8
14.80
18.80
23.50
29.10
35.80
54.40
290.00
3-1/8
23.70
30.00
37.50
46.40
57.10
86.70
462.00
3-5/8
35.10
44.60
55.80
69.10
84.80
129.00
688.00
4-1/8
49.60
62.90
78.70
97.40
119.43
181.00
971.00
5-1/8
88.90
113.00
141.00
174.00
213.00
-
-
6-1/8
143.00
181.00
226.00
280.00
342.00
-
-

 

  • Adapted from ASHRAE HVAC Refrigeration Handbook
  • Tables are based on 105°F condensing temperature. Note that refrigerant temperature has minimal effect on discharge line size. Steel pipe has approximate same capacity as Type L. copper 1/8” larger

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