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Table 21: Linear Thermal Expansion of Copper Tubing in Inches.
Pipe
Length
35°
40°
45°
1
10
0.04
0.04
0.05
20
0.08
0.08
0.10
30
0.12
0.12
0.15
40
0.16
0.16
0.20
50
0.20
0.20
0.25
60
0.24
0.24
0.30
70
0.28
0.28
0.35
80
0.32
0.32
0.40
90
0.36
0.36
0.45
100
0.40
0.40
0.50
120
0.48
0.48
0.60
140
0.56
0.56
0.70
160
0.64
0.64
0.80
180
0.72
0.72
0.90
Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe," The Engineers' Toolbox, www.engineeringtoolbox.com.
1
Figure 13: Coiled Expansion Loops and Offsets.
L
R
Large Tubing U-bend (>3/4 in.)
Table 22: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets.
Anticipated Linear
Expansion (LE) (inches)
1/2
1
1-1/2
2
2-1/2
3
3-1/2
4
R = Centerline Length of Pipe.
1
50°
55°
60°
65°
70°
0.06
0.06
0.07
0.08
0.08
0.12
0.13
0.14
0.15
0.16
0.18
0.20
0.21
0.23
0.24
0.24
0.26
0.28
0.30
0.32
0.30
0.33
0.35
0.38
0.40
0.36
0.39
0.42
0.45
0.48
0.42
0.46
0.49
0.53
0.56
0.48
0.52
0.56
0.60
0.64
0.54
0.59
0.63
0.68
0.72
0.60
0.65
0.70
0.75
0.80
0.72
0.78
0.84
0.90
0.96
0.84
0.91
0.98
1.05
1.12
0.96
1.04
1.12
1.20
1.28
1.08
1.17
1.26
1.35
1.44
L
1/4
R
6
1
L
38
2
R
9
1
L
54
2
R
11
1
L
66
2
R
12
1
L
77
2
R
14
1
L
86
2
R
15
1
L
94
2
R
16
1
L
102
2
R
17
1
L
109
2
2
Due to our policy of continuous product innovation, some specifications may change without notification.
©
LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG " is a registered trademark of LG Corp.
REFRIGERANT PIPING DESIGN
Selecting Field-Supplied Copper Tubing
Fluid Temperature °F
75°
80°
85°
90°
0.09
0.09
0.10
0.10
0.11
0.17
0.18
0.19
0.20
0.21
0.26
0.27
0.29
0.30
0.32
0.34
0.36
0.38
0.40
0.42
0.43
0.45
0.48
0.50
0.53
0.51
0.54
0.57
0.60
0.63
0.60
0.63
0.67
0.70
0.74
0.68
0.72
0.76
0.80
0.84
0.77
0.81
0.86
0.90
0.95
0.85
0.90
0.95
1.00
1.05
1.02
1.08
1.14
1.20
1.26
1.19
1.26
1.33
1.40
1.47
1.36
1.44
1.52
1.60
1.68
1.53
1.62
1.71
1.80
1.89
R
Loop
Nominal Tube Size (OD) inches
3/8
7
44
10
63
12
77
14
89
16
99
17
109
19
117
20
126
L = Centerline Minimum Radius (inches).
95° 100° 105° 110° 115° 120° 125° 130°
0.11
0.11
0.12
0.13
0.22
0.22
0.23
0.26
0.33
0.32
0.35
0.39
0.44
0.43
0.46
0.52
0.55
0.54
0.58
0.65
0.66
0.65
0.69
0.78
0.77
0.76
0.81
0.91
0.88
0.86
0.92
1.04
0.99
0.97
1.04
1.17
1.10
1.08
1.15
1.30
1.32
1.30
1.38
1.56
1.54
1.51
1.61
1.82
1.76
1.73
1.84
2.08
1.98
1.94
2.07
2.34
L
Small Tubing U-bend (<3/4 in.)
1/2
8
50
11
70
14
86
16
99
18
111
19
122
21
131
22
140
REFRIGERANT DESIGN | 47
0.14
0.15
0.15
0.28
0.29
0.30
0.42
0.44
0.45
0.56
0.58
0.60
0.70
0.73
0.75
0.84
0.87
0.90
0.98
1.02
1.05
1.12
1.16
1.20
1.26
1.31
1.35
1.40
1.45
1.50
1.68
1.74
1.80
1.96
2.03
2.10
2.24
2.32
2.40
2.52
2.61
2.70
3/4
9
59
13
83
16
101
19
117
21
131
23
143
25
155
26
166
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