I often see .critical flow' and 'sub-critical flow' terms when reading on safety relief valve sizing. What do these terms actually mean and how are they related to the sizing formulas in API-520.
pierreick - Thanks but the information in that document is well out of date and refers to API-520 7th edition 2000. We are now edition 10 2020.
Latexman - Thank you. I'm new here so picking up, Thanks for the pointers.
Hi Forum, my 1st post.
For flows where there is flashing of liquid to vapor when a safety relief valve opens, what is the best and recommended method of sizing> I've seen terms like the omega and diers methods discussed, but don't really know which to use and when/why. I need to size for some...