RE: RE: Water Jet Ejectors

From: <Steve>
Date: Thu Oct 23 2003 - 05:05:00 EDT

Hi Shah M. Tanweer

I think we have come to the branch in the road.

As far as "size" goes it is quite clear in the S&K website downloads that it refers to the suction and the discharge connections in inch NB. Have you looked at these? It also gives a sizing procedure. I suspect that if you do need 1300gpm to do the job, then the low efficiency of an ejector will make it a bad choice for continuous duty. Unless you specifically need an ejector then I suggest you look at alternatives such as liquid ring vacuum pumps. Or perhaps you need something like a jet scrubber. It is impossible to select as you have provided no process conditions. If you wish to persist with the ejector you could try contacting S-K with an enquiry; I have found them helpful in the past, and they manufacture. For liquid ring pumps, you could google Nash Kinema.

In light of our correspondence to date, I would advise against you "designing" an ejector at this stage. I suggest you buy this one (ejector, vacuum pump or whatever) based on a performance spec, see how it works, and think about designing the next one.
You may wish to read the article "Selecting Vacuum Systems" in Chemical Engineering magazine (McGraw Hill) Dec 14 1981.

Thats it for me on this topic.

Good luck

Steve McKenzie

-----Original Message-----
From: Shah Muhammad Tanweer [mailto:smt_pk@yahoo.com] Sent: Thursday, October 23, 2003 8:31 PM To: <a href="/group/PipingDesign/post?postID=Ikyn5S-yJ_WZoKFq002sy0agVDiQy-_2QgzG8aXggMpUWZHq3V-SwQu5jsnV_oKU9xF1xkhTSQXSLEGfFx1HU0i6">PipingDesign@yahoogroups.com</a> Subject: [PipingDesign] RE: Water Jet Ejectors

Dear
Steve McKenzie

I remain thankful for your help. Can you guide me about the sizes if the water consumption is round about 1300 gpm. At example 5 and table 8 KARASSIK chapter 4, does not deel with high flow.

Also please let me know What "SIZE" exactly mean. I mean what portion of ejector exactly

Ever Yours
Shah M. Tanweer

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Your use of Yahoo! Groups is subject to <a href="http://docs.yahoo.com/info/terms/">http://docs.yahoo.com/info/terms/</a> Received on Thu Oct 23 05:05:00 2003