| Applies To | |
| Product(s): | AutoPIPE |
| Version(s): | ALL; |
| Area: | Properties |
| Date Logged & Current Version | March 2020 12.02.00.14 |
Problem:
AutoPIPE thermal expansion is measured in "In/100 ft". However most material specifications list thermal expansion as "in/in DegF"
How to calculate the Thermal Expansion Coefficient in AutoPIPE?
Solution:
From AutoPIPE help:
This field and the corresponding Auto checkbox are used to input the thermal expansion data for each operating case. For non-standard (NS) materials, the thermal expansion data can be entered and modified, . For standard and code materials, the field is not editable (grayed out) and the corresponding data is automatically retrieved from the material library for the appropriate temperature.
For non-standard materials, the default value is zero for new models. For existing models with pipe identifiers defined with code or non-code materials then a new or existing pipe identifier changed to NS material will default to the previous expansion values. To override the automatic library value un-check the Auto option and enter the user-defined data."
Example conversion
Given
Thermal expansion coefficient = 6.41 x 10^-6 in/in deg f
Ambient Temp = 70 deg f
Operating Temp = 200 deg f
Calculation
= 0.9996 in/100 ft
Round off to 1.00
See Also
"Press/Temp/PipeID" - Input grid tab