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SeZaR
Active Contributor

Join Date: Oct 2013
Posts: 12

Fresh Water Hydrophore Tank Theory

03/22/2015 9:01 PM

Hello, experts....
I am a freshman in the ship building company. I have a question for F.W hydrophore tank theory. please see the below;
Lets take the case of hydrophore tank of 2.0 M3.

Condition under - pump on : 5.5 bar.g pump off : 6.5 bar.g , uterlized compressed air pressure : 8.0bar.g

1) How much will be compressed air volume for the above.

2) How to selct each cut in and cut off pressure.

3) How to calculate the flow rate of water at each cut-in pressure and cut-off pressure.

Please advise on to me..
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SolarEagle
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Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33392
Good Answers: 1817
#1

Re: F.W hydrophore tank Theory

03/22/2015 9:36 PM


http://www.100rmsim.com/products/cbt/motorman/589.html

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SeZaR
Active Contributor

Join Date: Oct 2013
Posts: 12
#5
In reply to #1

Re: F.W hydrophore tank Theory

03/23/2015 4:09 AM

This is infomative for me. . Thanks
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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#2

Re: Fresh Water Hydrophore Tank Theory

03/22/2015 11:06 PM

This falls under the "homework" umbrella.

It's time to hit the books.
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#3

Re: Fresh Water Hydrophore Tank Theory

03/23/2015 3:55 AM

A1) There will be no flow, as the vessel pressure exceeds the selected pump cut off pressure. Therefore it doesn't matter what the vessel volume is.

A2) It is a matter of judgement based upon the flow and pressure needed downstream and the maximum number of starts per hour acceptable for the pump and its starting equipment. None of these figures is available in the original post.

A3) It depends upon the pump flow/pressure curve and the system characteristic curve, neither of which can be seen from here.

  • Design must start instead from stating the flow/pressure requirements downstream, selecting the pump(s) and then selecting the vessel volume.
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SeZaR
Active Contributor

Join Date: Oct 2013
Posts: 12
#4
In reply to #3

Re: Fresh Water Hydrophore Tank Theory

03/23/2015 4:07 AM

Thanks for your advice.

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pnaban
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Join Date: Jun 2010
Location: srilanka
Posts: 2725
Good Answers: 5
#6

Re: Fresh Water Hydrophore Tank Theory

03/24/2015 1:05 AM

what are the advantages over rubber bladder type tank for domestic and high rises

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