How do you calculate the flow rate of an oil pump?
Submersible pump flow calculation formula: 60HZ flow × 0.83 = 50HZ flow 60HZ lift × 0.69 = 50HZ lift 60HZ power ÷ 1.728 = 50HZ motor power motor output power = Q (flow) × H (head) / 367.2 / efficiency × 1.15 motor output power = shaft power × 1.15 pump efficiency = Q × H × 0.00272 / motor power Q represents flow; H …
How do you calculate pump power from flow to head?
Pump Power calculation Formula: Pump Power P(kW) = q(m3/hr) x ρ(kg/m3) x g(m2/s) x h(m) x p(Pa) / 3600000. The same way pump power in horsepower formula can be written as, Pump Power P(HP) = q(m3/hr) x ρ(kg/m3) x g(m2/s) x h(m) x p(Pa) / 2685600. Also above pump power is required to lift the liquid to head meters.
How do you calculate pump head discharge?
To calculate the discharge head, we determine the total head from the characteristic curve and subtract that value from the pressure head at the suction, this gives the pressure head at the discharge which we then convert to pressure.
What is pump head flow rate?
In a system where there is flow, the total head is the difference between the discharge head and the suction head plus the friction head and this sum will be less than the shut-off head. The plot of head versus flow rate is known as the pump’s performance curve (see Figure 7 for an example of a pump performance curve).
How do you calculate pump water flow?
Calculating the desired flow rate of your pump is quite easy. Let’s say, you want to transport 300 litres of a fluid every 30 minutes, then your pump system has to transport 300/30 = 10 litres per minute or 0.167 litres per second. This is the desired flow rate, which is usually calculated before the installation.
What is the formula for pump power?
Pumping power is calculated as the volume of the fluid per unit time (flow capacity) times the density of the fluid times the gravitational constant times the pumping head (vertical distance to be pumped). Pumping energy is simply power multiplied across time. 100kW of power for one hour is 100kWh of energy.
How do I calculate pump needs?
This is the total pressure load the pump needs to overcome. Example: TDH = vertical distance + friction loss = 50 ft + 20 ft = 70 ft. Look up the specific gravity if you are pumping anything besides water. The basic water horsepower formula assumes you are pumping water.
How do you calculate flow rate from pressure?
Flow rate formula There are two main approaches to calculating the flow rate Q which is equivalent to the difference in volume divided by the difference in time (Δv / Δt). The first one is if we know the pressure difference (pressure drop) between the two points for which we want to estimate the flow.
How to calculate the efficiency of a pump?
Pump Efficiency is the ratio of pump input and output power. i.e Efficiency of the pump is the ratio water horse power to break horse power. Pump input power calculation formula or pump shaft power calculation formula Pump Input Power = P Formula – 1 P in 3
How do you calculate the flow rate of a hydraulic pump?
Pump displacement per revolution and driven speed are multiplied to determine the theoretical flow. For example, if the pump has a displacement of 200 cc/rev and is turning at 500 RPM, the flow rate is 100L/min. Flow meters must be used to measure the actual flow.
What is a pump head in pressure?
In terms of pressure the pump head ( ΔPpump) is difference between system back pressure and the inlet pressure of the pump. The maximum pump head of a centrifugal pump is mainly determined by the outside diameter of the pump’s impeller and the shaft angular velocity – speed of the rotating shaft.
What is the power given to the pump shaft?
In the U.S. customary units, P S is the power given to the pump shaft in brake horsepower (BHP). For example, using these equations, we can predict that a pump that generates 90 GPM at 35 feet of head and needs 1 BHP has an overall efficiency at that flow point as: