Steam Tracing Pipes

Overview

Engineering reference data for Steam Tracing Pipes in fluid mechanics.

Key Formulas

Reynolds Number

$Re = \frac{\rho v D}{\mu}$

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

$P + \frac{1}{2}\rho v^2 + \rho g h = \text{const}$

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

$A_1 v_1 = A_2 v_2$

Conservation of mass for incompressible flow.

Darcy-Weisbach

$\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}$

Pressure drop due to friction in a pipe.

Variables

Symbol	Description	Unit
$Re$	Reynolds number	—
$\rho$	Fluid density	kg/m³
$v$	Flow velocity	m/s
$D$	Characteristic dimension	m
$\mu$	Dynamic viscosity	Pa·s
$P$	Pressure	Pa
$f$	Darcy friction factor	—

Steam Tracing Recommendation Table

The required number of 1/2 inch (15 mm) steam tracers for a process line depends on its size and the required operating temperature.

Practical Application

Example: For a 4-inch process line transporting vegetable oil with a solidification temperature of 40°C (104°F), the objective is to keep the media fluid. Looking at the table for a 4-inch line and a temperature requirement just above 25°C but below 65°C, two 1/2-inch steam tracers would be appropriate.

Interactive Charts

References

• Original Source