25
General Refrigerant Piping System Information
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Pipe
Length
1
Fluid Temperature °F
35°
40°
45°
50°
55°
60°
65°
70°
75°
80°
85°
90°
95° 100° 105° 110° 115° 120° 125° 130°
10
0.04 0.04 0.05 0.06 0.06 0.07 0.08 0.08 0.09 0.09 0.10 0.10 0.11 0.11 0.11 0.12 0.13 0.14 0.15 0.15
20
0.08 0.08 0.10 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.22 0.23 0.26 0.28 0.29 0.30
30
0.12 0.12 0.15 0.18 0.20 0.21 0.23 0.24 0.26 0.27 0.29 0.30 0.32 0.33 0.32 0.35 0.39 0.42 0.44 0.45
40
0.16 0.16 0.20 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 0.42 0.44 0.43 0.46 0.52 0.56 0.58 0.60
50
0.20 0.20 0.25 0.30 0.33 0.35 0.38 0.40 0.43 0.45 0.48 0.50 0.53 0.55 0.54 0.58 0.65 0.70 0.73 0.75
60
0.24 0.24 0.30 0.36 0.39 0.42 0.45 0.48 0.51 0.54 0.57 0.60 0.63 0.66 0.65 0.69 0.78 0.84 0.87 0.90
70
0.28 0.28 0.35 0.42 0.46 0.49 0.53 0.56 0.60 0.63 0.67 0.70 0.74 0.77 0.76 0.81 0.91 0.98 1.02 1.05
80
0.32 0.32 0.40 0.48 0.52 0.56 0.60 0.64 0.68 0.72 0.76 0.80 0.84 0.88 0.86 0.92 1.04 1.12 1.16 1.20
90
0.36 0.36 0.45 0.54 0.59 0.63 0.68 0.72 0.77 0.81 0.86 0.90 0.95 0.99 0.97 1.04 1.17 1.26 1.31 1.35
100
0.40 0.40 0.50 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95 1.00 1.05 1.10 1.08 1.15 1.30 1.40 1.45 1.50
120
0.48 0.48 0.60 0.72 0.78 0.84 0.90 0.96 1.02 1.08 1.14 1.20 1.26 1.32 1.30 1.38 1.56 1.68 1.74 1.80
140
0.56 0.56 0.70 0.84 0.91 0.98 1.05 1.12 1.19 1.26 1.33 1.40 1.47 1.54 1.51 1.61 1.82 1.96 2.03 2.10
160
0.64 0.64 0.80 0.96 1.04 1.12 1.20 1.28 1.36 1.44 1.52 1.60 1.68 1.76 1.73 1.84 2.08 2.24 2.32 2.40
180
0.72 0.72 0.90 1.08 1.17 1.26 1.35 1.44 1.53 1.62 1.71 1.80 1.89 1.98 1.94 2.07 2.34 2.52 2.61 2.70
Table 13: Linear Thermal Expansion of Copper Tubing in Inches.
1
Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe,"
The Engineers' Toolbox
, www.engineeringtoolbox.com.
COPPER EXPANSION AND CONTRACTION
Anticipated Linear
Expansion (LE) (inches)
Nominal Tube Size (OD) inches
1/4
3/8
1/2
3/4
1/2
R
1
6
7
8
9
L
2
38
44
50
59
1
R
1
9
10
11
13
L
2
54
63
70
83
1-1/2
R
1
11
12
14
16
L
2
66
77
86
101
2
R
1
12
14
16
19
L
2
77
89
99
117
2-1/2
R
1
14
16
18
21
L
2
86
99
111
131
3
R
1
15
17
19
23
L
2
94
109
122
143
3-1/2
R
1
16
19
21
25
L
2
102
117
131
155
4
R
1
17
20
22
26
L
2
109
126
140
166
Table 14: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets.
Figure 26: Coiled Expansion Loops and Offsets (Plan View).
Large Tubing U-bend (>3/4 in.)
Loop
Small Tubing U-bend (<3/4 in.)
R
L
R
L
L
1
R = Centerline Length of Pipe.
2
L = Centerline Minimum Radius (inches).
All expansion loops and offsets must be installed in the horizontal plane to prevent the possibility of trapping oil. Loops and offsets in vertical risers
must also be installed in a horizontal plane.
