Due to our policy of continuous product innovation, some specifications may change without notification.
Due to our policy of continuous product innovation, some specifications may change without notification.
REFRIGERANT DESIGN | 37
Refrigerant Piping Design & Layout Best Practices
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
1
Pipe length baseline temperature = 0°F. "Expansion of Carbon, Copper and Stainless Steel Pipe," The Engineers' Toolbox, www.engineeringtoolbox.com.
Table 9: Linear Thermal Expansion of Copper Tubing in Inches
Selecting Field-Supplied Copper Tubing
Anticipated Linear
Expansion (LE) (inches)
Nominal Tube Size (OD) inches
1/4 3/8
1/2
R
1
6 7
L
2
38 44
1
R
1
9 10
L
2
54 63
1-1/2
R
1
11 12
L
2
66 77
2
R
1
12 14
L
2
77 89
2-1/2
R
1
14 16
L
2
86 99
3
R
1
15 17
L
2
94 109
3-1/2
R
1
16 19
L
2
102 117
4
R
1
17 20
L
2
109 126
1
R = Centerline Length of Pipe.
2
L = Centerline Minimum Radius (inches).
Large Tubing U-bend (>3/4 in.)
Small Tubing U-bend (<3/4 in.)
Figure 14: Coiled Expansion Loops and Offsets.
Large Tubing U-bend (>3/4 in.)
R
L
Table 10: Radii of Coiled Expansion Loops and Developed Lengths of Expansion Offsets
R
L
Small Tubing U-bend (<3/4 in.)
L
REFRIGERANT PIPING DESIGN
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