How do you calculate the power of a water pump?
The following formula can be used to calculate water horsepower (WHP).
- WHP = HQ / 3960.
- Where H is the change in pressure measured in height of water in feet and Q is the water flow rate in gallons per minute.
- WHP = (112 x 460) / 3960 = 13.0.
How do you calculate power from flow and pressure?
For instance the calculation of power output. Hydraulic power is defined as flow multiplied by pressure. The hydraulic power supplied by a pump is: Power = (P x Q) ÷ 500 – where power is in kilowatts [kW], P is the pressure in bars, and Q is the flow in litres per minute.
What are the four main fluid power equations?
Fluid Power Formulas
| Variable | Word Formula w/ Units | Simplified Formula |
| Fluid Pressure – P | (PSI) = Force (Pounds) / Area ( Sq. In.) | P = F / A |
| Fluid Flow Rate – Q | GPM= Flow (Gallons) / Unit Time (Minutes) | Q = V / T |
| Fluid Power in Horsepower – HP | Horsepower = Pressure (PSIG) × Flow (GPM)/ 1714 | HP = PQ / 1714 |
| Actuator Formulas |
How to calculate brake horsepower for a water pump?
Brake horsepower is the power out of the drive motor, and the power into the water pump and is how most pumps and drive motors are specified. Also calculate the total power requirements (energy use rate).
How to calculate the power of a pump?
Hydraulic power of the pump (kW). Shaft power of the pump (kW). Required power to the Motor (kW). Volumetric flow of fluid through the pump (m 3 /h). Density of the fluid being pumped (kg/m 3 ).
How to calculate the hydraulic power of water?
The hydraulic Horse Power can be calculated as: 1 m3/h of water is pumped a head of 10 m. The theoretical pump power can be calculated as The shaft power – the power required transferred from the motor to the shaft of the pump – depends on the efficiency of the pump and can be calculated as
How is the efficiency of a water pump determined?
Also calculate the total power requirements (energy use rate). The pump efficiency depends on the pump and the pressure and flow that the pump is operated at and is found on the pump chart from the manufacturer. Drive motor efficiency affects the total power requirements or energy use rate.