Pump capacity calculation

Pump Sizing does the hydraulic calculation for a centrifugal pump and estimates differential hea hydraulic power , motor power , NPSH available. Head Loss Calculator for Pump Selection. Enter total pumping lift or height (feet) water is pumped vertically.

Enter the number of pipe fittings (elbows, tees). Click the update button to calculate total losses for the system. Select a pump based on flowrate and total head loss requirements.

Calculate pump head pressure for an increase or decrease in flow rate. To calculate the new pump head pressure from an increase or decrease in pump speed rpm, the following formula and calculation can be used. A pump P can fill a water tank in hours.

With a second pump Q also operating, the tank can be filled in hours. In how many hours can pump. For example: If the building is a high rise with floors (meters) then what should the pump capacity (HP) and (LPM) be as per norms.

Like any device that does work (transfers energy across a distance), its effectiveness. Calculate the pump discharge pressure from the pump total head To calculate the pressure at the bottom of a pool, you need to know the height of the water above you. It doesn’t matter if it’s a pool or a lake, the height is what determines how much fluid weight is above and therefore the pressure.

Multiply pump capacity with stroke length (in). Example - Required Pump Capacity. A hydraulic cylinder with cylinder area 7. The required pump capacity can be calculated q = 0. To allow the pumps to run up to full spee a small time delay is set before the capacity calculations are started. All you do is enter your specifications and click the update button to calulate total losses for the system.

Then select a pump based on flowrate and total head loss requirements. For example, if a specific pump has a displacement of 1CFM and the volumetric efficiency at Hg gauge is , the actual pump capacity at Hg would be ACFM. These values can also be obtained from the individual performance curves, if available. Positive Displacement Pump Calculations.

This can be applied to pumps. Calculation of the flow rate of a plunger or piston pump based off of standar measurable dimensions of a the pump. The discharge rate is normally measured in gallons per minute (gpm) in English units or liters per second (lps) in metric units.

Pressure is normally measured in pounds per square inch (psi) in English units or kiloPascals (kPa) in metric units. As you can see, the calculated required pump psi is 1psi. A similar calculation can be used for a non-high rise, by changing the 1psi to the end head pressure (– psi, depending on the head).