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Table 22-1:

Steam loss of interconnecting vapor hose, tubing, and pipe

Description

Nominal hose,

tubing, or pipe size

Steam loss

Insulation thickness

Noninsulated Insulated

inches DN lbs/hr/ft kg/h/m lbs/hr/ft kg/h/m inches mm

Hose

1 40 0.15 0.22 N/A N/A N/A N/A

2 50 0.20 0.30 N/A N/A N/A N/A

Tubing

1 40 0.11 0.16 0.020 0.030 2.0 50

2 50 0.14 0.21 0.025 0.037 2.0 50

3 80 0.20 0.30 0.030 0.045 2.5 64

4 100 0.26 0.39 0.030 0.045 3.0 76

5 125 0.31 0.46 0.035 0.052 3.0 76

6 150 0.36 0.54 0.039 0.058 3.0 76

Pipe

1 40 0.22 0.33 0.020 0.030 2.0 50

2 50 0.25 0.38 0.025 0.037 2.0 50

3 80 0.39 0.58 0.030 0.045 2.5 64

4 100 0.49 0.73 0.030 0.045 3.0 76

5 125 0.59 0.88 0.035 0.052 3.0 76

6 150 0.70 1.04 0.039 0.058 3.0 76

Note: Data based on ambient air temperature of 80 °F (26.7 °C), berglass insulation, copper tubing, and Schedule 40 pipe.

Steam loss in lbs/hr/ft

and kg/h/m

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 83 84

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