Pipe expansion help 1

[tom73]

I have 160 metres of 6" st/st metric pipe installed in a straight line,could anybody help me with the expansion rate of the pipe given the highest temperature it will see is 20 degC

 

[trashcanman]

Need to know the material of the pipe, min. & max temp.

 

[tom73]

150mm st/st 304 2mm wall....the max temp will be 25degc the min will be 15degc

 

[HEC]

Unrestrained expansion will be in the order of 27mm.

Mark Hutton

 

[corus]

If you installed the pipe when it was 20 deg C then at 20 deg C it won't see any relative expansion. You need to take the temperature difference from ambient and not the absolute temperature to calculate expansion. The expansion could be anything.

corus

 

[HEC]

Have to agree with corus, if the pipe is installed at an ambient temperature of 20 degrees, the movement will become +/- 13mm. The change in length given in my previous post is for the whole 10degC range. The Engineering toolbox site is a useful design site,

http://www.engineeringtoolbox.com

, with many design cooeficients and other useful information.

Mark Hutton