A centrifugal pump has an eye diameter and an impeller diameter of 300 mm and 600...

A centrifugal pump has an eye diameter and an impeller diameter of 300 mm and 600 mm respectively while running at 850 rpm. When rotating, the blade angle is measured at 35^o at the outlet with considering the tangent. The flow velocity is limited at 5 m/s constantly. Determine the following;

(a) inlet blade angle

(b) outlet absolute velocity with its angle at outlet and

(c) the manometric head.

Expert Solution

samet mamat answered 1 year ago

‏1. The impeller in a centrifugal pump has inner diameter as 125 mm and outer diameter...

‏1. The impeller in a centrifugal pump has inner diameter as 125 mm and outer diameter as 270 mm. The pump runs at 1400 rpm. The vane angles of impeller at inlet and outlet are 17° and 30° respectively. The water enters the impeller radially and velocity of flow is constant. Determine the work done by impeller per unit weight of water.

A centrifugal pump has the following characteristic: outer diameter of impeller 800 mm, width of impeller...

A centrifugal pump has the following characteristic: outer diameter of impeller 800 mm, width of impeller vanes at outlet 100 mm, angle of impeller vanes at outlet 40 o . The impeller runs at 550 rpm and delivers 0.98 m 3 /s of water under an effective head of 35 m. A 500 kW motor is used to drive the pump. Determine the manometric, mechanical and overall efficiencies of the pump. Assume water enters the impeller vanes radially at inlet....

A model centrifugal pump with impeller diameter 365 mm is tested at its design operating condition....

A model centrifugal pump with impeller diameter 365 mm is tested at its design operating condition. The test gives the following data when pumping water, speed = 870 rev/min head = 18.9 m capacity = 73.7 L/s efficiency = 89%. A geometrically similar pump is to be designed to pump a fluid with relative density 0.78 against a head of 85 m with a flow of 450 L/s. Determine: A) The impeller size? B) The speed? C) The power input...

An engineer is conducted the centrifugal pump at aircraft hangar. The pump has an eye diameter...

An engineer is conducted the centrifugal pump at aircraft hangar. The pump has an eye diameter and an impeller diameter of 200 mm and 500 mm respectively while running at 900 rpm. While it rotate, the blade angle is measured at 35o at outlet with considering the tangent. The flow velocity is limited at 3 m/s constantly. Evaluate the (a) inlet blade angle (b) outlet absolute velocity with its angle at outlet and (c) the manometric head.

A centrifugal pump with an impeller diameter of 30cm and speed 1800RPM operating at its best...

A centrifugal pump with an impeller diameter of 30cm and speed 1800RPM operating at its best effiecieny point develops a head of 30m and a flow of 3900L/min. while requiring power of 24kW. This pump is scaled up to provide a flow of 11000L/min. and a head of 75m. Determine the impeller diameter, speed, and a brake power of the new pump.

1. A centrifugal water pump impeller is given an inlet and exit radius of 400 mm...

1. A centrifugal water pump impeller is given an inlet and exit radius of 400 mm and 1200 mm, and an inlet and exit blade thickness of 120 mm and 80 mm. The entering and exiting blade angles are 40o and 60o respectively. If the pump rotational speed is 575 rpm with and efficiency of 85%, determine: a) Ideal head (m) b) Fluid power for max pressure (kW) c) Shaft torque for max pressure (Nm) solutions a) 488 m b)...

The radius of the impeller of a centrifugal pump at the inlet is 6 cm and...

The radius of the impeller of a centrifugal pump at the inlet is 6 cm and at the outlet is 10.5 cm. The blade angles β1 and β2 are respectively 33o and 21o respectively. The width of the impeller is uniform and 4.75 cm. The impeller rotates at 1200 rpm and pumps water (See Figure 1). Assuming radial entry, (a) the flow rate through the pump (b) the theoretical head (c) the power required assuming an efficiency of 75%. (d)...

2. A centrifugal pump running at 750 rpm with a 1-m-diameter impeller generates the following pressure...

2. A centrifugal pump running at 750 rpm with a 1-m-diameter impeller generates the following pressure rise and flow rate data while pumping water at room temperature: ?(dot)[m^3/s]= [0, 0.0278, 0.0417, 0.0556, 0.0694, 0.0833, 0.0903, 0.0972] ?P [kPa]= [361, 349, 328, 293, 230, 145, 114, 59] Estimate the pressure rise and flow rate for impeller speeds of 500 and 1000 rpm using the 750 rpm data. Plot pressure rise (y-axis) vs flow rate (x-axis) for all three pump speeds and...

A centrifugal water pump is driven at a speed of 1450 rpm. The pump impeller is of radial type and has an average radius of 50 mm at the vane inlet and a radius of 150 mm at the vane exit.

A centrifugal water pump is driven at a speed of 1450 rpm. The pump impeller is of radial type and has an average radius of 50 mm at the vane inlet and a radius of 150 mm at the vane exit. The vane width at inlet and exit are 25 and 10 mm respectively. The vane angles are ?1 = 500 and ?2 = 300. Assuming no prerotation at inlet and neglecting all sources of losses, determine a. the volume...

Consider a centrifugal water pump whose geometry and flow conditions are as follows: Impeller outlet radius...

Consider a centrifugal water pump whose geometry and flow conditions are as follows: Impeller outlet radius – 2.5 cm, impeller inlet radius – 1.8 cm, impeller outlet width – 1 cm, design speed – 1800 rpm, Design flow rate120 liters/min, Backward-curved vanes (outlet blade angles) – 60 deg. Assuming 100% efficiency, find: a) the total head, b) absolute and relative discharge velocities, c) theoretical power required at design flow rate and d) the theoretical pump curve

Question