Pump Power P ( kW ) = q ( m 3 / hr ) x ρ ( kg / m 3 ) x g ( m 2 / 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 ( m 3 / hr ) x ρ ( kg / m 3 ) x g ( m 2 / s ) x h ( m ) x p ( Pa ) / 2685600. Also above pump power is required to lift the liquid to head meters.
How is pump motor rating calculated?
Pump Hydraulic Power (ph) = (1000 x 0.005 x 65 x9. 87)/1000 =3KW. Motor/ Pump Shaft Power (ps)= ph / pe = 3 / 80% = 4KW. Required Motor Size: ps / me =4 / 90% = 4.5 KW.
How do you calculate pump motor kW?
Pump Power P ( kW ) = q ( m 3 / hr ) x ρ ( kg / m 3 ) x g ( m 2 / s ) x h ( m ) x p ( Pa ) / 3600000 .
What is pump head calculation?
The head is calculated as H=E2-E1 . The pump head H=z+hw z is the height difference of the pumping height, that is, the water level from the inlet to the water surface at the exit.
What is the formula for pump?
| Pump Displacement – CIPR Displacement (In.3 / rev.) = Flow Rate (GPM) × 231 / Pump RPM CIPR = GPM × 231 / RPM | Pump Torque – T Torque = Horsepower × 63025 / RPM T = 63025 × HP / RPM | Torque = Pressure (PSIG) × Pump Displacement (CIPR) / 2? T = P × CIPR / 6.28 |
What is pump capacity?
Pump capacity is a term used to define the flow rate through a pump at its designed conditions. It describes the volume of liquid that is allowed to travel through the pump in a given time. ... Based on this definition, pump capacity is expressed as fluid volume per unit time .
How do I calculate flow rate?
Flow rate is the volume of fluid per unit time flowing past a point through the area A. Here the shaded cylinder of fluid flows past point P in a uniform pipe in time t. The volume of the cylinder is Ad and the average velocity is ̄ ̄ ̄v=d/t v ̄ = d / t so that the flow rate is Q=Ad/t=A ̄ ̄ ̄v Q = Ad / t = A v ̄ .
How do you convert GPM to HP?
- VARIABLE. Fluid Pressure – P. Fluid Flow Rate – Q. Fluid Power in Horsepower – HP.
- WORD FORMULA WITH UNITS. (PSI) = Force (Pounds) / Area ( Sq. In.) GPM= Flow (Gallons) / Unit Time (Minutes) Horsepower = Pressure (PSIG) × Flow (GPM)/ 1714.
- SIMPLIFIED FORMULA. P = F / A. Q = V / T. HP = PQ / 1714.
How do you calculate water pump pressure?
In simple terms, the mathematical constant 2.31 converts a unit of energy against gravity into a unit of force against any other area. This constant converts a foot of head of water into pressure: Head in feet of water divided by 2.31 equals pressure in psi , and pressure in psi times 2.31 equals head in feet.
What is total head of a pump?
Total Dynamic Head (TDH) is the amount of head or pressure on the suction side of the pump (also called static lift), plus the total of 1) height that a fluid is to be pumped plus 2) friction loss caused by internal pipe roughness or corrosion.
How do you convert TDH to PSI?
The relationship between PSI and feet of head is that 2.31 feet of head = 1 PSI . Translated, that means that a column of water that’s 1-inch square and 2.31 feet tall will weigh 1 pound.
How do you calculate the head of a centrifugal pump?
It is represented by the letter H and is usually expressed by the height m of the liquid column. The pump head H=z+hw z is the height difference of the pumping height, that is, the water level from the inlet to the water surface at the exit.
What is the formula for calculating capacity?
To find the capacity of a rectangular or square tank: Multiply length (L) by width (W) to get area (A) . Multiply area by height (H) to get volume (V). Multiply volume by 7.48 gallons per cubic foot to get capacity (C).
What is the working principle of centrifugal pump?
A centrifugal pump operates through the transfer of rotational energy from one or more driven rotors , called impellers. The action of the impeller increases the fluid’s velocity and pressure and directs it towards the pump outlet.
How much water can a 1 hp pump move?
One horsepower equals 3,960 gallons/minute/feet .
What is normal flow rate?
Normal flow rate is 1 atmosphere (101.3 kPa) or 14.696 psia at 32 0 F (0 0 C). Actual flow rate is the actual volume of fluid that passes a given point based on given pressure and temperature of the process.
