drakkkko
Mechanical
- Feb 9, 2011
- 64
Hi,
I have the following conditions for CPVC (Sch 80) and PVDF (PN16) pipes flexibility stress analysis, using Caesar II (2018):
Fluid: HCl (30%), NaOH (5%)
Fluid_T°= 70 °C
T min/max = -19,1 °C / 25,9 °C
Pipes diam: both 6"
I am worried about:
a) Material properties (allowable stress,elastic modulus,yied stress and exp coef)
b) Design code.
About a):
For CPVC, I thing Code Case N-755-1 can be useful..but it just a guess.
I don't have any approach for PVDF.
I know commercial suppliers have more accurate data...I already asked..but I haven't had any answers, so i have to use other data sources.
About b)
I don't think B31.3 it is the appropriate design code..but, what is the design code included in Caesar II 2018, which give the closest calculation for non-metallic pipes materials, like CPVC and PVDF?
I am aware that flexibility analysis should not be performed for this type of materials, but fluids are category M and the temperature difference is relevant, which is why a flexibility analysis is necessary.
I would appreciate if someone can advise about a) and b) issues.
Thank in advance.
I have the following conditions for CPVC (Sch 80) and PVDF (PN16) pipes flexibility stress analysis, using Caesar II (2018):
Fluid: HCl (30%), NaOH (5%)
Fluid_T°= 70 °C
T min/max = -19,1 °C / 25,9 °C
Pipes diam: both 6"
I am worried about:
a) Material properties (allowable stress,elastic modulus,yied stress and exp coef)
b) Design code.
About a):
For CPVC, I thing Code Case N-755-1 can be useful..but it just a guess.
I don't have any approach for PVDF.
I know commercial suppliers have more accurate data...I already asked..but I haven't had any answers, so i have to use other data sources.
About b)
I don't think B31.3 it is the appropriate design code..but, what is the design code included in Caesar II 2018, which give the closest calculation for non-metallic pipes materials, like CPVC and PVDF?
I am aware that flexibility analysis should not be performed for this type of materials, but fluids are category M and the temperature difference is relevant, which is why a flexibility analysis is necessary.
I would appreciate if someone can advise about a) and b) issues.
Thank in advance.
