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Anonymous Poster #1

Pressure Loss

06/16/2014 1:22 PM

help solve this, have to find pressure drop at each floor, any tips on how to do this
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SolarEagle
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#1

Re: pressure loss

06/16/2014 1:40 PM
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lyn
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#2

Re: Pressure Loss

06/16/2014 2:06 PM

.433 PSI loss per foot of elevation.

I like #1 above.
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IdeaSmith
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#3

Re: Pressure Loss

06/16/2014 3:19 PM

Don't listen to the others! The thing is, you gain pressure with every floor!

There is no losses!

Don't you worry. You just need to take the height and multiply by your fluid. And voila there goes your pressure gain!

The higher the better!

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Anonymous Poster #2
#4
In reply to #3

Re: Pressure Loss

06/16/2014 3:22 PM

Ideasmith is correct.

Not many people know about this effect.. ( commonly called the Phlogiston effect)

Excess energy can be siphoned off to drive a perpetual motion machine.

Is this your first job ?
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IdeaSmith
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#8
In reply to #4

Re: Pressure Loss

06/17/2014 1:20 AM

Sorry, please dont name myself and perpetuum mobile in the same post.

I herewith declare I have nothing to do with this nor had I ever something like this in mind! Come out in the open and fight like a man!

Or call me wrong! But dont quote me with overunity phrases.

Which job and whose? OP's?

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Phys
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#11
In reply to #4

Re: Pressure Loss

06/17/2014 5:01 PM

You are totally incorrect - it is actually the Thomsen-Berthelot Principle.

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redfred
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#5

Re: Pressure Loss

06/16/2014 3:25 PM

This depends on the if the water is going up and/or down these stories. It will also depend on which valves are open and if a restricting orifice is downstream of the dalve.

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chauhan
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#6

Re: Pressure Loss

06/16/2014 11:24 PM

Fisrt of all break the system in different segments which have a unique flow rates and pipe sizes.

Then calculate the pressure loss due to friction of pipe wall by Darcy Weisback equation, and then take care the effect of gravity due to change in elevation of pipe .

Now you can arrange them just like a network and see the effect of pressure loss or gain.
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Tornado
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#7

Re: Pressure Loss

06/17/2014 12:38 AM

The question is premature. The drawing has not yet been baptized with a coffee spill.

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James Stewart
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#9

Re: Pressure Loss

06/17/2014 12:16 PM

At least have the courtesy to tell us what this is? Is it water supply, fire water supply? Cooling tower? I can't read the drawing in your photograph.

I suspect this is homework.

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Lehman57
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#10

Re: Pressure Loss

06/17/2014 1:13 PM

Yep, sounds like homework; thus, some of the less-than-serious answers. Is the fluid flowing? If so there will be friction loss in addition to the change due to the elevation. I can't read your drawing either.

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Anonymous Poster (1); chauhan (1); IdeaSmith (2); James Stewart (1); Lehman57 (1); lyn (1); Phys (1); redfred (1); SolarEagle (1); Tornado (1)

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