Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Heat Traced Pipes - Wrapping Factor

Wrapping factor when the heat loss from a pipe or tube is higher than the capacity of the heat trace cable.

Sponsored Links

When the heat loss from a pipe or tube is higher than the capacity of the heat trace cable - the cable must be spiral-wrapped around the pipe or tube.

The "heat loss - cable output" ratio can be calculated as

HR = Qhl / Qt                                               (1)

HR = "heat loss - cable output" ratio

Qhl  = heat loss from the insulated pipe or tube (W/m, Btu/h ft)

Qt = heat output from the heat trace (W/m, Btu/h ft)

If the "heat loss - cable output" ratio - HR - is larger than one, the cable must be wrapped. The pitch - the distance between the spirals - can be estimated from the diagram below.  

Heat tracing pipe - wrapping diagram

Example - Heat Tracing

The heat loss from a 4" pipe is estimated to be three times (HR = 3) the heat output capacity of the tracing cable. The pitch - the distance between each spiral - can be estimated as indicated in the table below to 5 - 6 inches (125 - 150 mm).

Heat traced pipes - wrapping factor diagram - example

Sponsored Links

Related Topics

  • Insulation

    Heat transfer and heat loss from buildings and technical applications - heat transfer coefficients and insulation methods to reduce energy consumption.

Related Documents

Sponsored Links

Search

Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

Citation

This page can be cited as

  • The Engineering ToolBox (2008). Heat Traced Pipes - Wrapping Factor. [online] Available at: https://www.engineeringtoolbox.com/heat-tracing-wrapping-factor-d_1154.html [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter

















































2.27.11

Sponsored Links
.