Q:I need information about basic water pumps. I'll have to build a mechanical one for school. Do you have any ideas, information, designs, links? Thanks!

There are a number of different types of pumps (and some overlap between types, too). A suction pump basically sucks water up. This might be a piston pump, or a venturi pump (or some other types). This type of pump raises water up by lowering the air pressure above the water, and letting atmospheric pressure push the water up the tube. Suction pumps can't pull water up more than about 32 feet (because that's how high atmospheric pressure can lift a column of water) but they have the advantage that the pump can be located at the top of where you want the water (rather than down where tie water is). A Lift pump basically uses mechanical force to raise water upwards. This could be a chain of buckets, or an Archimedes screw, or a bubble-lift pump. All these pumps need to have at least part of the pump down at the water level (with the exception of the bubble lift, which is kind of a unique design). The most common water pumps are centrifugal pumps. These use a set of spinning vanes to pressurize the water. Water comes in at the center, and hit spinning vanes; these shove the water outward through centrifugal force, and the outlet pipe is at the outside edge of the circle. One other interesting type of pump is the hammer pump. It's sometimes used in remote farming areas, because you can use the energy of a running stream to pump water high up a cliff. In a hammer pump, you let water flow through a relatively long tube. The tube has a vertical pipe near it's end. You let the water run through, and then suddenly close off the end of the pipe. The momentum of the water (combined with the fact that water isn't very compressible) can force a shot of water very far up the vertical tube. Hope this gives you enough to search for on the web!

Q:I found a small submersible water pump for pond decorations or birdbaths in my garage. It's about the size of three decks of cards stacked on top of each other. Would there be any harm/benefit of putting this into a 55 gal fw community tank?

well it depends, do you have any small fish? and how is the water cycled in the pump? it needs to be protected so that fish dnt obviously get sucked. before you add it in tho need it submerged in a bucket of water and add several teaspoons of salt; that will kill all the bacteria that may have grown on and inside the pump. leave it in there for minimum 24 hours (just to be sure).

Q:A circular swimming pool has a diameter of 12 meters. The sides are 3 meters high and the depth of the water is 2.5 meters. How much work is required to pump all of the water over the side?

Let the x-axis point upward, with x=0 at ground level. Consider a thin horizontal increment of water, of thickness dx, located at some x (0 ≤ x ≤ 2.5). This water has mass dm given by dm = ρA dx where ρ is the mass density of water (in kg/m?) and A is the area of this increment (A = 36π for all increments here). This increment must be lifted (3-x) meters. The increment of work dW is given by dW = gh dm where g is the acceleration due to gravity and h is the distance that the increment of mass must be lifted (which we've seen is equal to 3-x meters). The total work W is given by 2.5 ?∫ g (3-x) 36π ρ dx 0

Q::) approximatley how many and where would you buy them :/ :) x peacce dudes

LIKE A BAJILLION!!! You can never have too many water pumps. You buy them from the water pump store on the corner of 85th and Broadway, next to the Wachovia Bank branch across the street. P.S.: Africa is NOT a country. LMAO!!!

Q:my water pump went bad on my 1997 chevy cavalier, causing it to leak all the coolant it had in the system. i put water in it til i could get new water pump. changed out water pump. attempted getting air out of system. put more concentrated coolant in system than i did water. bad guessing on my part. ran car around block 5 times. it was fine. this morning on the way to work, it started overheating again. my thoughts : more air in system that's not coming out? thermostat REALLY went bad at same time as water pump???? overheating all because of a little too much coolant??? for some crazy reason, my system needs to be suddenly flushed? Your thoughts? one last thing, the car has always ran perfectly normal temp til water pump went bad.

Check your radiator,check your radiator fan to see if it works! Sometimes they go bad or their sensor won't work anymore and the car is overheating the sensor doesn't pick that up and the fan won't start! That's make the car overheating!

Q:Hello, i have a 1987 volkswagen cabriolet that i purchased earlier this year. So far its been a pain in the butt. Recently i noticed it overheats real quick, but it didnt use to. then i noticed the coolant/antifreeze was being used up like no other! I discovered, after being parked at work, that it was leaking. it leaks basically anything i put in there now!! it leaks from the water pump housing,.,.... at least thats what the internet said it was.. its leaking from the end of the hose that connects to the engine... (the hose that comes from the coolant reservoir.) What do i do? I dont feel any cracks? does this part crack? is it an o-ring or somehting? how can i fix it? what happens if i dont? I am really absolutely NOTHING ABOUT CARS. Please help!!

For that age of car, and if nothing has been done on it, the water pump gasket could be shot, leaking water out. OR... it has a seal inside the pump casing, that leaks if the seal is gone, water comes out a tiny hole at the bottom. In either case, it needs to be fixed. Anti Freeze is deadly to animals, so cats and dogs drink it, it will kill them. Try to fix it as soon as you can. Animals like the taste of it...so they drink it. The hose could just maybe need the clamp tightened up, so have someone look at it. If you do not know anything about cars, you then need to get someone who does, to fix it. And soon, because as I said, animals will drink the coolant. And the runoff is not good for the waste system either.

Q:Does it take more power to pump water with a 1 /12 hp bg motor/pump than one that is a spare pump/motor running dry,not connected to the system? I am trying to figure out how long it will run with an power inverter during a power failure.

Hi there, Your 1/12 HP motor will draw 0.52 amps at 110 volts from the inverter. It would draw about 5 or 6 amps from the 12 volt battery to produce the 0.52 amps from the inverter. You need to know the amp-hour rating on your battery then divide that number by 5-6 to get an approximate time the pump would operate on backup. Yes a pump that is pumping water will draw considerable more power than a pump that is pumping 'dry'. The best way to check is to just try your setup and see how long it lasts (before it's needed) since there are inefficiencies in the inverter, voltage drop in the wiring and perhaps the backup battery is not new. Manufacturers always are optimistic with their ratings Short answer: try it out before you really need it then you will know for sure. Hope this helps, Al

Q:when i drove my truck after about 15 minutes i was parked and let my truck idle afetr about a minute of idling my truck stalled and when i turned it back of it was squeeking and made some noises for about ten seconds and then stopped. I noticed that the pully on my fan coming from the water pump was wobbling. my tempuratue was still normal what could cause this i am suspecting taht the bearings in my water pump went?

your right ,when the water pump goes on those it usually does gets the bearings in them,just replace the pump on it and you,ll be fine with it,they usually last between 75 and 100 k,good luck.

Q:I am trying to evaluate my well water pump and water system to see if the pump is cycling on/off too frequently. What is the optimal quot;ontime? What is the optimal quot;offtime? I have heard the term quot;short cyclingquot;, but no times were attached. I have heard that too frequent cycling can cause a problem, but, again, no times were attached. How can one tell when the system is working within the optimal/normal range, so that no harm is being caused to the system? Thanks.

There is no optimum time. This is dependent on several factors. Assuming you are pumping into a small tank which is pressurized by the inflow of water from the pump (and the pressure also controls the pump) these reasons can be excessive use of water, the air space at the top of your tank has been absorbed into the water over a period of time and the volume of compressed air too small causing the pressure to drop too fast, or you could have leak in your water piping. If there is not enough air space in your tank, the pump will cycle extremely fast. If you don't have a tank, then the above information is incorrect. Good luck.

Q:I have an 02 Gran Prix and my water pump is going out. With the recession I don't have the money to take it in. So can anyone give step by step instructions to help me fix it. I am a do it yourself kinda of guy so I am mechanically inclined. What tools will I'll need? is there a timing chain? How long will you think it will take me? Any thing i should pay attention to? How can I measure the pounds of torque that I put on the bolts or what tool will I'll need? Please help!!!

WP replacement mini-writeup 1. Empy Coolant from Radiator drain 2. Remove SC and Acc. belts 3. Remove the coolant resevoir tank 3. Remove the Idler pulley with a 15mm 4. Remove the 4 WP pulley bolts with a 8mm 5. Remove the 2 Power Steering Pump bolts with a 13mm(bolts are at 12:00 and 6:00 accessable through the PS pulley holes) 6. Push PS pump 1 inch to the side 7. Remove all 8 WP bolts with a 13mm and a 10mm(3 are 13mm/5 are 10mm) 8. Collect extra coolant until flow stops(a few cups) 9. Apply RTV to both sides of the gasket and WP bolts 10. WP bolts should be torqued to 11lbs+80*/Idler pulley bolt at 36lbs/WP pulley bolts at ~9lbs 11. Reinstall everything and fill the coolant back up 12.