Steam Tracing Pipes
Reference data and engineering information about steam tracing pipes for fluid mechanics applications.
Overview
Engineering reference data for Steam Tracing Pipes in fluid mechanics.
Key Formulas
Reynolds Number
Ratio of inertial to viscous forces — determines flow regime.
Bernoulli's Equation
Conservation of energy for steady, inviscid, incompressible flow.
Continuity Equation
Conservation of mass for incompressible flow.
Darcy-Weisbach
Pressure drop due to friction in a pipe.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Reynolds number | — | |
| Fluid density | kg/m³ | |
| Flow velocity | m/s | |
| Characteristic dimension | m | |
| Dynamic viscosity | Pa·s | |
| Pressure | Pa | |
| 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.
Product Line Size(inch) | Frost Protection (< 25°C)(-) | Keep Fluid (< 65°C)(-) | Keep Fluid (< 150°C)(-) |
|---|---|---|---|
| 1 | 1 | 1 | 1 |
| 1 1/2 | 1 | 1 | 2 |
| 2 | 1 | 1 | 2 |
| 3 | 1 | 1 | 3 |
| 4 | 1 | 2 | 3 |
| 6 | 2 | 2 | 3 |
| 8 | 2 | 2 | 3 |
| 12 | 2 | 3 | 6 |
Source: engineeringtoolbox.com
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.