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What are the things considered for Pump selection?
Pump Selection - Things to Consider•Pump location■ Equipment room or plenum?■ Close to occupied areas?•Available space■ Installation footprint■ Maintenance footprint•Maintenance requirements■ Parts availability■ Special skills, tools etc.•Reliability•Hydraulic requirements■ Flow rate, head, efficiency, horsepower■ NPSH
What is meaning of head of pump?
it is the max vertical height upto which pump can supply the water.
What is the difference between a 5m head circulating pump and 6m head circulating pump?
The 6m head pump can lift 6 meters. The 5m head pump can lift 5m. Note this has no impact on the volume of liquid that is pumped.
Can pump discharge head be negative?
When a pump is pumping water from a level that is below the pump it is called suction head. If the water to be pumped is at a level above the pump, it is positive head. The pump maybe pumping from the base of a tank to a higher level such as an elevated tank or it may be pulling water from a tank that is below the pump. The distance from the center of the pump to the top of the water level would be the foot of head. It takes 2.31 feet to make 1 P.S.I. So if it is 10 feet from the center line of the pump to the water level, you would have about 4.33 P.S.I. of head.
Do you pull head gaskets to change the oil pump in a 1994 Jeep Grand Cherokee?
there is no reason to pull the head to get at the oil pump.
What is pump head unit?
Pump head unit; is either in Feets fluid- us unit or in meters fluid- metric units
What is negative suction in pump?
Negative Suction Head means the pump is drawing liquid up from below its centerline. The distance between the centerline of the pump and the surface of the fluid is measured in head feet, this can be negative (below the pump) or positive (above the pump).
Why pump trip on overload?
There are a couple of things you must keep in mind when troubleshooting centrifugal pump problems:The centrifugal pump always pumps the difference between the suction and discharge heads. If the suction head increases, the pump head will decrease to meet the system requirements. If the suction head decreases the pump head will increase to meet the system requirements.A centrifugal pump always pumps a combination of head and capacity. These two numbers multiplied together must remain a constant. In other words, if the head increases the capacity must decrease. Likewise if the head decreases, the capacity must increase.The pump will pump where the pump curve intersects the system curve.If the pump is not meeting the system curve requirements the problem could be in the pump, the suction side including the piping and source tank, or somewhere in the discharge system.Most pumps are oversized because of safety factors that were added at the time the pump was selected. This means that throttling is a normal condition in most plants, causing the pump to run on the left hand side of its curve.The increased amperage can be caused by a pump that is too large for the application.A large pump was specified in anticipation of future needs.The pump was sized for the maximum operating condition, but does not run anywhere near that point most of the time.The capacity requirement has been lowered and the pump is being throttled rather than cut back the impeller diameter.The pump was oversized because of safety factors that were added at the time the pump was sized.Increasing the speed of the pump causes a dramatic change in the amperage required. The amperage changes by the cube of the change in speed or impeller diameter. If you double the speed of a pump you will need eight times the amperage.The increased amperage can be caused by a change in the product.The motor was sized for a low specific gravity fluid, but the lines are being flushed or tested with water.The specific gravity of the fluid has increased for some reason.The viscosity of the liquid is increasing with a change in temperature. Some viscosities increase with a lower temperature, some with a higher temperature.The viscosity of a liquid can increase with agitation. That is how cream becomes butter.
How do you choose a pump for your rural house water supply?
By calculating the fixture requirements and taking friction losses into account and then you choose the pump from this
Calculate pump efficiency for submersible pump?
pump eff. = (pump dynamic head x pump flow)/(pump h.p x 3960)flow=gallon per minute
Kirloskar monoblock pump range cataloge for pump selection?
Head 30mts Discharge 120 cu.mt water pump
What do you mean by head of pump?
Total pump head is the sum of suction and discharge pressure in mtr. ie. 1 bar =10.33 metres of water column
