IPEC Pipeline Toolbox | Temperature Drop Access Pipe Wall

Temperature Drop Access Pipe Wall

This module calculates the temperature across the pipe wall containing the temperatures of all coating interfaces. Knowing the temperature profile helps us to calculate the heat loss from the wall to the ambient and thus the temperature of working fluid along the pipeline will be known. In other application the temperature drop across the pipe wall helps to choose the appropriate coating for the pipeline.

Nominal Outer Diameter:
i.e: 32 in or 100 mm

Fluid Temperature:
i.e: 25 °C or 300 K

Ambient Temperature:
i.e: 25 °C or 300 K

Pipe Wall Thickness:
i.e: 0.5 in or 20 mm

Coating Thickness:
i.e: 0.5 in or 20 mm

Concrete Thickness:
i.e: 0.5 in or 20 mm

Pipeline buried height(normally equal to zero for offshore pipe line):
i.e: 50 cm or 350 mm

Pipeline thermal conductivity:
i.e: 43 W/m°C or 3500 cal/m.hr.K

Coating thermal conductivity:
i.e: 43 W/m°C or 3500 cal/m.hr.K

Concrete thermal conductivity:
i.e: 43 W/m°C or 3500 cal/m.hr.K

Coating thermal conductivity:

Ambient fluid thermal conductivity:

Internal fluid thermal conductivity:

Ambient fluid density:
You can select predifined values: Water @ 20°C

internal fluid density:
You can select predifined values: Water @ 20°C

Ambient fluid viscosity:
You can select predifined values: Water @ 20°C

Internal fluid visocsity:
You can select predifined values: Water @ 20°C

Ambient fluid heat capacity:
i.e: 4200 J/Kg*K or 1 btu/lbm*R

Internal fluid heat capacity:
i.e: 4200 J/Kg*K or 1 btu/lbm*R

Internal fluid volumetric flow rate:
i.e: 500 m3/hr or 100 liter/s

Ambient fluid velocity:
i.e: 20 m/s or 10 ft/s

4 | 4541

References

Theodore L. Bergman, Adrienne S.Lavine, Frank P.Incropera, David P.DeWitt, 2007, fundamentals of heat and mass transfer, John Wiley & Sons, USA
http://www.engineeringtoolbox.com

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