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Typical Condensation Rates in Steam Pipes

 

Typical Condensation Rates in Steam Pipes - Insulated

Pressure

PSIG (BAR)

Rates in Pounds/Hour (Kg/Hour) per Foot of Pipe with 2 Inches of Insulation

Pipe Diameter (Inches)

0.75

1

1.5

2

3

4

1 (0.069)

0.02 (0.009)

0.03 (0.014)

0.03 (0.014)

0.04 (0.018)

0.05 (0.023)

0.06 (0.027)

5 (0.34)

0.03 (0.014)

0.03 (0.014)

0.04 (0.018)

0.04 (0.018)

0.05 (0.023)

0.06 (0.027)

10 (0.69)

0.03 (0.014)

0.03 (0.014)

0.04 (0.018)

0.04 (0.018)

0.05 (0.023)

0.07 (0.032)

25 (1.7)

0.03 (0.014)

0.04 (0.018)

0.05 (0.023)

0.05 (0.023)

0.06 (0.027)

0.08 (0.036)

50 (3.4)

0.04 (0.018)

0.04 (0.018)

0.05 (0.023)

0.06 (0.027)

0.09 (0.041)

0.11 (0.05)

75 (5.2)

0.04 (0.018)

0.05 (0.023)

0.06 (0.027)

0.07 (0.032)

0.11 (0.05)

0.14 (0.064)

100 (6.9)

0.05 (0.023)

0.05 (0.023)

0.07 (0.032)

0.08 (0.036)

0.12 (0.054)

0.15 (0.068)

125 (8.6)

0.05 (0.023)

0.06 (0.027)

0.07 (0.032)

0.08 (0.036)

0.13 (0.059)

0.16 (0.073)

150 (10.3)

0.06 (0.027)

0.06 (0.027)

0.08 (0.036)

0.09 (0.041)

0.14 (0.064)

0.17 (0.077)

200 (13.8)

0.06 (0.027)

0.07 (0.032)

0.08 (0.036)

0.09 (0.041)

0.15 (0.068)

0.19 (0.086)

 

Typical Condensation Rates in Steam Pipes - Bare

Pressure

PSIG (BAR)

Rates in Pounds/Hour (Kg/Hour) per Foot of Bare Pipe at 72 Degrees F     (22 Degrees C) Ambient Air

Pipe Diameter (Inches)

0.75

1

1.5

2

3

4

1 (0.069)

0.11 (0.05)

0.15 (0.068)

0.21 (0.095)

0.25 (0.113)

0.38 (0.172)

0.46 (0.209)

5 (0.34)

0.14 (0.064)

0.16 (0.073)

0.22 (0.1)

0.26 (0.118)

0.41 (0.186)

0.50 (0.227)

10 (0.69)

0.15 (0.068)

0.18 (0.082)

0.24 (0.109)

0.29 (0.132)

0.44 (0.2)

0.53 (0.24)

25 (1.7)

0.17 (0.077)

0.22 (0.1)

0.31 (0.141)

0.36 (0.163)

0.53 (0.24)

0.65 (0.295)

50 (3.4)

0.22 (0.1)

0.27 (0.122)

0.39 (0.177)

0.46 (0.209)

0.66 (0.299)

0.83 (0.376)

75 (5.2)

0.26 (0.118)

0.31 (0.141)

0.45 (0.204)

0.54 (0.245)

0.77 (0.349)

1.04 (0.472)

100 (6.9)

0.29 (0.132)

0.35 (0.159)

0.50 (0.227)

0.61 (0.277)

0.86 (0.39)

1.11 (0.503)

125 (8.6)

0.32 (0.145)

0.39 (0.177)

0.55 (0.249)

0.68 (0.308)

0.94 (0.426)

1.23 (0.558)

150 (10.3)

0.35 (0.159)

0.42 (0.191)

0.60 (0.272)

0.74 (0.336)

1.03 (0.467)

1.33 (0.603)

200 (13.8)

0.40 (0.181)

0.49 (0.222)

0.69 (0.313)

0.81 (0.367)

1.19 (0.54)

1.50 (0.68)