Questions regarding PSV sizing using Chemcad
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I am currently working on designing a PSV, but I’ve run into a few issues. First, once I go to the PSV sizing phase, the first Vessel model offers three options: Bubbly, Churn-turbulent, and Homogenous. There are also options for vent flow models such as HEM and ERM. I was wondering if anyone experienced could help me figure out which of these options should be chosen in order to properly design my PSV. Additionally, PSV design is usually carried out in accordance with API 520; I’m curious if any of you have experience designing systems for cases of reaction runaway
In addition to API 520/521, Chemcad’s safety valves also comply with Diers specifications. diers are used for gas-liquid two-phase flow. It’s described in the help.