One more clarification which may effect the results are that the chilled water is being sprayed into the tank and then draining out a 2.5 inch port. It isn't actually building volume in the tank as it is sprayed in.
Would this be considered the same senario as if a heated tank suddenly...
Montemayer,
The pre-chilled water introduction senario is a residual humid air environment after 160 degree liquid contents has been dumped. Not actually steam-like.
If I understand you correctly, the venting requirements established for the volume displacement of the chilled water will be...
How do I determine an appropriate vent size to alleviate the vacuum effects for the following senario:
60 inch diameter, 144 inch long horizontal 10 Ga 304 SST tank with flanged and dished heads at both ends which is empty but at a temperature of 160 degrees F with 50 degree water being sprayed...