Recent content by zdarlight

I have a strange enquiry for a set of Venturi tubes. The process conditions layed out describe a fluid (hydrocarbon/wet gas) whoms vapourisation pressure at process conditions is exactly the same as the process pressure. They also want the tubes designed to ISO 5167, which is impossible given...

Yep, Hydrocarbon gas. Sorry Latexman, what do you mean by a 3X thick orifice plate?

Hmm strange. Our understanding has always been to limit pressure recovery between stages hence the 1D plate spacings. Anyway thanks. I didn't think the new configuration would make any difference at all but try telling that to people who are set in thier ways!

42.85mm. 42.85mm pipe ID also.

Hi all, Currently reviewing a design of a multistage orifice assembly before we manufacture it. We have always used a typical configuration which looks a little something like this. concentric plate / eccentric plates with differing bore locations down the line / concentric plate. The reason...

Hi Stone Cold, I don't think cavitation has anything to do with the howling noise coming from your orifice plate. Noise production in orifice flow is at its loudest when operating at the peak frequency. The peak frequency of the stream is a function of jet diameter at the Vena Contracta...

But for the example of a RO plate downstream pressure cannot be reduced beyond the critical pressure ratio? Because it is the RO plate itself that is inducing this pressure drop....yes? And would you agree with me if I said the mass flowrate through the system would indeed increase beyond the...

Thanks for the posts guys. But my question still kind of goes un-answered. I totally agree with what your saying about the vena contracta in for a thin plate flow being allowed to expand due to the lack of a control boundary at the point. But, what happens then? Think about it, a flow reaches...

It's a very funny thing indeed! The statement thats puzzling me is 'choked flow won't occur across a thin, shrp edged orifice plate'. My understanding is if there is nothing choking the flow AT the orifice, surely a choke will occur downstream? Also if there is no choke, whats stopping the flow...

Hello all, I'm new to this so bare with me. I have recently started working for an instrumentation company and after briefly reviewing the orifice plate calc software I've been left puzzled. I've read that supersonic flow is acheiveable through a thin plate orifice. This i can grasp but i can...