A flocculator is 16 ft (4.88 m) deep, 40 ft (12.2 m) wide, and 80 ft (24.4 m) long. The flow of the water plant is 13 mgd (20 cfs, 0,57 m3/s). Rotating paddles are supported parallel to four horizontal shafts. The rotating speed is 2.0 rpm. The center line of the paddles is 5.5 ft (1.68 m) from the shaft (mid-depth of the basin). Each shaft equipped with six paddles. Each paddle blade is 10 in (25 cm) wide and 38 ft (11.6) long. Assume the mean velocity of the water is 28 percent of the velocity of the paddles and their drag coefficient is 1.9. 55 p. Estimate: (a) the difference in velocity between the paddles and water (b) the useful power input (c) the energy consumption per million gallons (Mgal) (d) the detention time (e) the value of G and Gt at 60 oF

A flocculator is 16 ft (4.88 m) deep, 40 ft (12.2 m) wide, and 80 ft (24.4 m) long. The flow of the water plant is 13 mgd (20 cfs, 0,57 m3/s). Rotating paddles are supported parallel to four horizontal shafts. The rotating speed is 2.0 rpm. The center line of the paddles is 5.5 ft (1.68 m) from the shaft (mid-depth of the basin). Each shaft equipped with six paddles. Each paddle blade is 10 in (25 cm) wide and 38 ft (11.6) long. Assume the mean velocity of the water is 28 percent of the velocity of the paddles and their drag coefficient is 1.9. 55 p. Estimate: (a) the difference in velocity between the paddles and water (b) the useful power input (c) the energy consumption per million gallons (Mgal) (d) the detention time (e) the value of G and Gt at 60 oF

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter14: Ocean Thermal Energy Conversion And Ocean Salinity Gradient Energy

Section: Chapter Questions

Problem 14P

See similar textbooks

Similar questions

A pump is required to transfer water at the rate of 350 kg/s from an open sump to an open storage tank located 30m above the pump. The suction pipe is 350mm in diameter and 12m in length, and the delivery pipe is 550mm in diameter and 40m in length. The friction factor of the pipe system is f=0.005. Q. Calculate the maximum height at which the pump may be placed above the sump, so that pressure at the inlet is not less than -80 kPa
A pump is required to transfer water at the rate of 350 kg/s from an open sump to an open storage tank located 30m above the pump. The suction pipe is 350mm in diameter and 12m in length, and the delivery pipe is 550mm in diameter and 40m in length. The friction factor of the pipe system is f=0.005. Q1. Calculate the maximum height at which the pump may be placed above the sump, so that pressure at the inlet is not less than -80 kPa Q2. Calculate the energy to be supplied by the pump per unit mass of water transferred Q3. Calculate the input power required by the pump, which is 60 % efficient
A pump is required to transfer water at the rate of 350 kg/s from an open sump to an open storage tank located 30m above the pump. The suction pipe is 350mm in diameter and 12m in length, and the delivery pipe is 550mm in diameter and 40m in length. The friction factor of the pipe system is f=0.005. Q1. Calculate the maximum height at which the pump may be placed above the sump, so that pressure at the inlet is not less than -80 kPa (gauge) (m) Q2. Calculate the energy to be supplied by the pump per unit mass of water transferred (J/Kg) Q3. Calculate the input power required by the pump, which is 60 % efficient (kW)
pls answer asap for my hydraulics course. A 30 cm diameter pipe is connected by a reducer to a 10 cm diameter pipe. Points 1 (on the 30 cm diam.) and 2 (on the 10 cm diam.) are along the same elevation. The pressure at 1 is 250 kPa. The flow is 30 liters per second and the energy lost between 1 and 2 is equivalent to 20 kPa. Compute the pressure at 2 if the liquid flowing has a specific gravity of 1.50.
A reservoir A with elevation 30m connected with a pump to rise the water into two reservoirs B and C 90m and 60 m respectively the amount of flow from J to B is equal 0.11 m/sec use the following data to determine the flow in each pipe and the power of the pump: LAJ 450 m, DaJ = 300 mm, LJB= 300 m, DJB = 200 m, Q JB = 0. m'/sec, LJc 600, D Jc = 150 mm,f (all Pipes) 0.02
A cylindrical tank 1m in diameter and 6m high contains 2m of water, 1.50m of oil (specific gravity = 0.8) and air under pressure of 20 KPa. If the 10cm diameter orifice located at the vertical side is 30 cm above the bottom of the tank, find the actual discharge at the orifice if C = 0.95.
Water is pumped from reservoir A through 1850 m pipeline 600 mm across a valley to a second reservoir C. the water surface elevation of reservoir A is at elevation 61 m and that of C is at elevation 91m. If during pumping, the pressure at B which is located midway of the 600 mm pipe and at elevation 30 is 100 kPa. Compute the flow rate and the horsepower exerted by the pump if f = 0.02.
Waters enter a pump through a 25 cm. dia. Pipe at 35Kpa. It leaves the pump at 140 kPa through a 15 cm. dia. pipe. If the flow rate is 150 li/sec., find the horsepower delivered to the water by the pump. Assume suction & discharge sides of pump are the same elevation.
Water flows through a set of pipes from a reservoir to the point of use, 12.5 m below thewater surface of the reservoir. The first pipe has a diameter and length of 125 mm and 20 mrespectively. The second pipe has a diameter of 175 mm. Determine the length of the secondpipe if a flow rate of 0.065 m3/s is required at the outlet of the second pipe. The first pipehas a friction coefficient of 0.008 (Darcy) and the second pipe has a friction coefficient of0.005 (Darcy). Consider all losses.
A flocculator is 16 ft (4.88 m) deep, 40 ft (12.2 m) wide, and 80 ft (24.4 m) long. The flow ofthe water plant is 13 mgd (20 cfs, 0,57 m3/s).Rotating paddles are supported parallel to four horizontal shafts. The rotating speed is 2.0rpm. The center line of the paddles is 5.5 ft (1.68 m) from the shaft (mid-depth of the basin).Each shaft equipped with six paddles. Each paddle blade is 10 in (25 cm) wide and 38 ft (11.6)long. Assume the mean velocity of the water is 28 percent of the velocity of the paddles andtheir drag coefficient is 1.9.55 p.Estimate:(a) the difference in velocity between the paddles and water(b) the useful power input(c) the energy consumption per million gallons (Mgal)(d) the detention time(e) the value of G and Gt at 60 oF(f) the loading rate of the flocculator• Find velocity differential v• Find P• Determine energy consumption E• Determine detention time t• Compute G and Gt• Compute the loading rate
A flocculator is 16 ft (4.88 m) deep, 40 ft (12.2 m) wide, and 80 ft (24.4 m) long. The flow ofthe water plant is 13 mgd (20 cfs, 0,57 m3/s).Rotating paddles are supported parallel to four horizontal shafts. The rotating speed is 2.0rpm. The center line of the paddles is 5.5 ft (1.68 m) from the shaft (mid-depth of the basin).Each shaft equipped with six paddles. Each paddle blade is 10 in (25 cm) wide and 38 ft (11.6)long. Assume the mean velocity of the water is 28 percent of the velocity of the paddles andtheir drag coefficient is 1.9. (a) the difference in velocity between the paddles and water(b) the useful power input(c) the energy consumption per million gallons (Mgal)(d) the detention time(e) the value of G and Gt at 60 oF(f) the loading rate of the flocculator• Find velocity differential v• Find P• Determine energy consumption E• Determine detention time t• Compute G and Gt• Compute the loading rate
For this system, the discharge of water is 0.15 m3 /s, x = 1.0 m, y = 2.0 m, z = 8.0 m, and the pipe diameter is 30 cm. Neglecting head losses, what is the pressure head at point 2 if the jet from the nozzle is 10 cm in diameter? Assume α = 1.0 at all locations.