Q:how to change water pump on 1998 hyundai sonata?

it really easy, first go to any car parts store near u, i recommand (napa) auto parts. u may ask for a book to look or ask for print out instruction. any way u need a wrench and some tools, look in the front, there r u radiator, follow the hose that came out and it will go to u engine and right there is u water pump, take the hose out and take water pump out and put the new one in, but some time it not the water pump, it could be the bell, or just the termostat locate on top of weter pump or to the side it the out water to go to engine , so how u know u water pump broke, but u want to save money get u phone book out and look for used auto parts and order u water pump around ($20) and just go to library and look for auto book and go from there, or go to auto zone ,they have print out for u, ...should na drive toyota

Q:And if it needs to be replaced, does that spell trouble for a car? I see a car I might like to buy, but the ad says that the water pump needs to be replaced. Someone please enlighten me. Thanks.

I have been in the automotive cooling business for over 25 years and Michael is exactly right. Depends on the make model and year . Usually normal wear and tear on a car will cause the pump to fail it is a fast moving part but at the same rate have some one point out the cooling systems recovery bottle and look inside of it and take a whiff. If it looks bad and smells bad that could be your sign to move on to the next car. Look for rust colored stuff in the coolant bottle BUT if it is a GM product after 95 i believe they have orange coolant so don't let that through you off either.

Q:A pump parameter is the maximum flow per hour 960L, followed by the standard flow of 480 what do you mean?

The parameter standard of the pump factory is determined by its efficiency, that is, the efficiency of the pump is highest at that point. All parameters have two curves, that is, a flow curve and an efficiency curve. You can according to your standard flow, see how much the efficiency of the point, the maximum flow efficiency is how much will know.

Q:looking for the comparison and then finaly the conclusion about the water pumps instaaled in the IC engines. Where we should stick to the tradional mechanical driven water pumps or electrical water pumps? which one is better!! any information/ response is appreciated

The belt driven pump is operating all the time the engine is running. This takes some of the HP of the engine and causes wear and tear of the belt and the pump. The electric driven water pump is operated on demand from the water thermostat and only runs when the water temp. rises above the setting and shuts off again on returning to the setting. Saves engine HP and pump wear and tear...It's much more efficient.

Q:Is it a must to change the entire water pump since only driplets of anti-freeze leak out over a 7day period from the bottom of the pump? Can i simply change the gasket and make it all better? Water pump is pumping and making no noise, vehicle isnt over heating.

water pump is bad if its leaking you need a new pump sooner the better new gasket along with new pump not very offen a water pump gasket will leak and they hardy ever make a sound and will not over heat til it pumps all the coolant out which you dont want which might just cost you a motor you replace whole water pump an d replace with new gasket

Q:i used my water fountain pump for the first time yesterday and I've had it for 10 years and i used it yesterday it worked with the water and everything was fine!then the next day i wanted to turn it on , it went on it started vibrating but it wasn't pumpingwhen i had it on the other day the water was dirty but it was workingi cleaned it the filtershould i put vinegar to clean it ?and what else should i do!??? Help :#92;thank you!

Debris is probably blocking the impeller ,a wheel that spins inside the pump,and moves the water through,you might have to take it in for servicing to a repair shop,if you aren't mechanically inclined to do it yourself.leaf litter,or a twig can get inside the intake port and wedge itself in the wheel,and keep it from working ,try backflushing the pump,forcing water the opposite direction through,and see if this dislodges the blockage first,then if no luck,you'll have to dismantle it to get the blockage out Make sure you handle the pump carefully.if all else fails,you could try whacking it with a hammer,and see if that jolts it free.It is pretty old now,and may be just time to get a new one,10 years is a good life span for one of these pumps.

Q:How can we calculate the maximum pump pressure for chilled water system for a 20 story building

In addition to what was said earlier you will also need to consider the following. Pipe frictional losses will need to be calculated. If there is a control valve or flow element then need to add 3 to 5 psi. If the chilled water goes thru a piece of equipment there will be a pressure loss across that, (example - cooling coil on an air handling unit, air separator etc) this can range from 3 to 20 psi, the equip vendor should be able to provide this. If your pumps are on the ground floor, you might be able to neglect the pressure due to elevation if the loop remains pressurized by the pump(s). Might be a good idea to have an engineer review this who has sized pumps before.

Q:7.63Determine the isentropic efficency of a water pump when water enters as a saturated liquid at 96.5 kPa and exits at 5 MPa and 106 degrees C.Thanks

Well!!!!!!!! Isentroipc Efficiency of a pump = Isentropic Work / Actual Work At state 1, Enthalpy of Saturated Liquid h1 = 413.357 kJ/kg Entopy s1 = 1.29154 kJ/kg-K At state 2, Enthalpy of Liquid at state 2 = 448.042 kJ/kg Now, to find the ideal Enthaply , Enthalpy at 5 M Pa at entropy of 1.29154 kJ/kg-K h2s = 418.462 kJ/kg Thus, Isentropic Work Done I = h2s - h1 = 418.462 - 413.357 = 5.105 kJ/kg Actual Work Done A = h2- h1 = 448.042 - 413.357 = 34.685 kJ/kg Hence, Isentropic Efficiency = I/A = 5.105/34.685 = 14.72%

Q:What is the average life of a water pump in a car?

to many factors to consider such as: materials used for pump, pump design, the engine operator's driving habits. You could have had the wrong belt put on and that would effect pump life. There are just to many variables. I'd say over 60,000 easy. Most pumps come with LLT Warranties b/c you should only have to replace one once.

Q:Hi I really need a USB water pump (small). I have found one in China but they need payment in a different currency so its proving difficult. I would much prefer a US/EUROPE seller. Cheers.PSgt; If I had to pay to get the power supply changed from wire to USB then I could if anyone knows who could do this.

The USB output has a 5V power supply. USB2 delivers up to 500mA and later versions may be 900mA. USB hubs start off with less than this (100mA) but change as they are initialised. Some dedicated USB charging ports supply up to 1.8A. There are some USB power cables that take the output from 2 ports in a sort of Y harness (first link for example). The result of all this is that only a very small pump would run from most USB ports. I did find 2 rated at 5W and 8W but the voltage was not shown. I suspect they were mains operation, meant for large water bottles. If they were 5V they would use 1A and 1.6A respectively, so only run from special USB charge points or double cables, and only in some cases anyway. I assume you want to run from a Laptop/Notebook battery for convenience. The point is that even if the USB port can supply the correct voltage and current the battery would be emptied very quickly. It is probably cheaper to get a suitable pump, then power it from a separate and more suitable rechargeable battery or mains adaptor (wall wart), whatever it takes, taking into account how long it should run with a single charge. This is about the battery voltage and the capacity in ampere hours - the number of hours it can supply a given current. D size rechargeable (Ni-MH) would run a 6V x 6W motor using 1A for about 6 hours. C size cells are half that, and AA cells about half again. It takes 4 cells to get 5V. Get them as a pack though or at least with a battery holder, as they cannot be soldered. Then you need a proper charger. Recent laptop/notebook batteries are lithium ion types, 10.8V and 4.8Ah, so deliver 1A @10.8V for 4h more or less. Other types worth considering are for cordless drills.