Agree with pierreick, a full hydraulic study by an experienced Engineer is called for.
When the 3rd machine is designed for, take a look at making the supply and return lines into loops. With bidirectional flow the existing header size might work.
Also agree, 2” header in one directional flow...
Can you post the P&ID, because that PRV is probably not protecting the TS of the exchanger? In my mind, there’s several questions that the P&ID should help answer.
It’s not exactly the way I was taught. Close, but not exactly. Using the “worst case scenario“ and actual medium properties, I calculate the perfect nozzle (orifice) area needed for the sizing flow. Then, I get a real nozzle area by dividing by the certified flow coefficient of the PSV the...
On controlling project cost, a wise, old Project Manager once told me, "there's a time in a project where you have to shoot the Engineers, and begin construction".
shvet and Ed align with my thinking. Option B mixes better. What is the cost of failure? Is a coating really needed, or will SS be okay? IIRC, standard MOC in static mixers is SS.
...We had a guy that specialized in bird dogging info we needed. If you strike out, let me know after April 1. I'm at my FL condo now. *I think*, the articles are at my home in NC. I retired in July and I'm pretty sure I brought those home.
Have you characterized the rheology of your shear...