I am using PVElite 2011. But my findings in PVElite 2011 are as follows.
1. No Staic Head due to Liquid
If, Tmin = min Specified thk in input menu, then
PVElite uses Tmin as tr and tg for MDMT calculations. As this would be the actual minimum thk of the material, the MDMT calculations should be based on actual minimum thickness of the material and not the calculated min thk.
2. With static Head due to Liquid
In this case, thicknesses considered are as follows.
If
A = Min. required thk for internal pressure + static head
B = Min. required thk for internal pressure alone
Then (A-B) = increase in thickness due to static head
If, Tmin = min Specified thk in input menu
Then, the values used in tr x E / (tg - c) are-
tr= Tmin -(A-B)
tg = Tmin
Even if tr-as calculated above, goes below the minimum required thk due to pressure (B), the same is used for MDMT calculations. I think, this is a bug and need to be fixed.
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Regards,
Kunal Shah
New Delhi