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RegisterLinear expansion coefficient: 0.012 [mm/m*K]
Temperature difference ΔT: 70 [°C]
Pipe length L: 10 [m]
Extension ΔL: 8.4 [mm]
Arm length L: 1.01 [m]
Arm length U: - [m]
Arm length (pre-tension) U50%: 0.32 [m]
Arm spacing RU: 0.16 [m]
Engineering calculators have been developed based on technical literature
The information on the website is for informational purposes only. Calculation results should be interpreted by the designer. The information contained in the service does not constitute technical advice. The user is responsible for all decisions, selections or solutions based on calculation results.
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Select the pipe type (material, type), then choose the diameter from the predefined series
Enter the pipe length and input the maximum operating temperature of the installation (operating temperature) and installation temperature. This is needed to determine the temperature difference for thermal expansion calculation.
The program will calculate the thermal expansion of the pipe and also calculate the appropriate lengths of L and U compensation arms. For better visualization, everything is shown in drawings.
The program automatically calculates results while entering input values
Drawing notations:
PS - Fixed point
U - Free arm
U50 - Free arm with pre-tension length
Formula for thermal expansion of the pipe:
ΔL = L * ΔT * α [mm]
where:
ΔL – change in pipe length (mm)
L – initial pipe length (m)
ΔT – difference between operating and installation temperature (°C)
α – linear expansion coefficient (mm/m·K)
Table of linear expansion coefficients α for different materials:
| Material | Linear expansion coefficient α [mm/m∙K] |
|---|---|
| Steel pipes | 0,012 |
| Copper pipes | 0,0165 |
| PEX pipes | 0,2 |
| PEX/Al pipes | 0,026 |
| HDPE pipes | 0,2 |
| PP pipes | 0,18 |
| PP-Al pipes | 0,035 |
