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Steam Pipes - Thermal Expansion

Thermal expansion of steam pipes heated from room temperature to operation temperature (mm pr. 100 m pipe).

Expansion of steam pipes when pressurized and heated from room temperature.

Thermal Expansion of Steam Pipes - inches

Steam Pipes - Thermal Expansion
Operating Temperature (^oC)	Expansion (mm / 100 m Pipe)
66	63
93	96
121	136
149	166
177	203
204	246
232	279
260	323

Note! - to avoid unacceptable stress and damage of pipe lines - handle the expansion properly!

Example - Expansion of Steam Pipe

Steel pipe - temperature expansion

make 3D models with The Engineering ToolBox Sketchup Extension

A system is designed for pressure 10 bar with operating temperature approximately 180 ^oC. As indicated in the table above (177 ^oC) the expansion is is approximately 203 mm_100m pipe.

The expansion of a 35 m long pipe can be calculated as

dl = ((203 mm_100m) / (100 m)) (35 m)

= 71 mm

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