Water Pumps

Goodness gracious, no! Pease do some elementary arithmetic.

(It will take something like 1700 kva.)

Yeah, except I quickly came up with about 3700 kva (2900 kW)

http://www.engineeringtoolbox.com/pumps-power-d_505.html

OP - your requirement is unrealistic. (but to be more realistic: What is the straight elevation change required? You said an 'incline' - at what angle?

I did that really quickly, so I might be a bit off. However, you and I are dealing with a factor of 2 or so, while the OP is off by a factor of 30 or 60 or so....

I guess you and guest are both correct and saying the same thing, except that he has used the worst case of 200 m and you have used 100 m.

The OP has not only got the maths wrong but also has a fair mix of units.

Ignoring any friction losses the pure hydraulic power required for 200 m head is around 2475 kW for usg/m and 2970 for igp/m.

How does he expect to achieve this amount of work with only 50 kVA

angle is at 90 degrees

This is a question appropriate to pump vendors like ITT, Goulds, etc..

And the calculations done above are for the ideal scenario, not including the type of piping to be used and the frictional losses that will be there. Also he might need to use not one but multiple pumps, if the end flow rate is what that matters most. Anyway, probably a more appropriate approach would be to add the total frictional losses to the head and fit a pump curve on the system head curve to see which of the manufacturers are providing the pump for the respective operating conditions. Instead of looking for the right "pump" he needs to look for the right consultant who can build him a system that gives the best return on investment under given constraints.

Hi guys, Thanks for all your comments. I assure you if it was a simple problem I would not have bothered you with it. The way I see it is this. In the course of development of any new technology or at the point of taking any giant step in technology, questions and requests like this come up and as you have all done everybody goes to what the textbooks say, until someone decides to find another perspective then all of a sudden the established facts which everyone is stating here (including me if I must confess) starts to look like an argument that lacks depth. I am presenting a problem I feel we can all examine together. I definitely wont claim to be sane at this instant but What are the things we have in abundance 1. water 2. height 3. more height. What do we have in limited quantity 1. power all 50kw of it.

I believe there is virtually no limit to the voltage that can be acquired by this wattage??(if necessary using multiple step up transformers??) Is there any way in which high voltage can be adapted (into any pump or any form of pumping mechanism) and used in pumping water to get the desired results as against looking for more wattage?) can we get pumping capability out of high voltage??? ANY OTHER WILD IDEAS???? so is there anyone willing to throw away the books and look at this again??please?? I'm open to the wildestESTEST ideas. that's why there is SUBSTANTIAL funding (OVER $500K)for anyone/ANY GROUP able to research this problem and find a solution. this is a frontier, lets burst it!! I definitely wont claim to be sane at this instant but someone said if we all worked on the assumption that everything that has been said is generally true there would be no hope for advancement. Human reasoning has always been like that; it needs to leave its comfort zone to achieve anything.

Nope, there is no limit to the voltage that you can generate. Heck, I can use under 0.03 kW just walking and rubbing my feet on the carpet to generate 10,000's of volts ("static electricity"); and hold on ... with 50 kW and a Van de Graaff generator, you would be able to generate MILLIONS of volts . the problem is that you need POWER to move/pump water, and voltage (potential) alone does not give you that. What you need is CURRENT times VOLTAGE, and with any transformer you must lose power when jumping up voltages (unless you want an over unity machine). So if you increase voltage, you lose current ability, and thus at the absolute perfect level, maintain the same POWER.

$500,000? Big deal. I will offer a prize of $1,000,000,000,000 for this ridiculously impossible accomplishment.

impossibility exists only in a man's mind it is not real. It was once impossible to travel at the speed of sound etc etc......

Everybody is still saying what the text books said…. Can we throw them away for a bit PLEASE??I received this on another forum…"What if there was a way to create some kind of vacuum at the top of the 100 to 200 metre pipe acting as a suction to draw up the water while at the same time complementing it with a pump at the bottom of the pipe. For argument sake lets say the total allowed power is increased to 100kw. Any ideas?? Comments?? What is the strength of vacuum that can be generated by the extra 50kw?? What if non returning valves were placed at intervals all along the length of the 100 to 200 metre pipe to reduce the weight of water being pumped up? Ideas?? Questions?? Comments??

To what exact height can a 50kw pumping mechanism pump 20,000 gallons per minute of water to?? 1metre? 2 metres??

That's even sillier than the original post. Even a perfect vacuum can "suck" water only 34 feet (~10.4 m) high. Check valves in the line do not decrease the weight of the water between them. Most techniques involving vacuum are less efficient than water pumps. The maximum strength of vacuum is 760 mm Hg ≈ 34 feet ≈ 10.4 m, as mentioned before. Throw the textbooks away? Are you kidding? You claim to be a mechanical engineer. If so, you are among the most spectacularly incompetent MEs I have encountered. But you're lots of fun!