Question

In: Civil Engineering

For a small scale hydraulic power system, the elevation difference between the reservoir water surface and...

For a small scale hydraulic power system, the elevation difference between the reservoir water surface and the pond water surface downstream of the reservoir is 20.35. The velocity of the water exhausting into the pond is 7 m/s, and the discharge through the system is 4 m3/s. The head loss due to friction in the penstock (inlet pipe to turbine, under very high pressure) is negligible. Find the power produced by the turbine in kilowatts. Assume specific weight of water is 9810 N/m3 and g = 9.81 m/s2

Solutions

Expert Solution

Solution posted below

As the pipe is in high pressure which implies that the velocity of flow should be low i.e. the flow should be laminar. But i've calculated both the possibilities of flow i.e. laminar or turbulent flow.

Efficiency of system has not given in the question so I've assumed it to be 85%.. If u know the exact efficiency so u can easily replace it by 85%.

Hope it helps.

Ally Wells answered 10 months ago
Next > < Previous

Related Solutions

The water surface of the reservoir is at an elevation of 326 m. A penstock with...
The water surface of the reservoir is at an elevation of 326 m. A penstock with a length of 6.4 km supplies water from the reservoir to a power plant at an elevation of 18m above sea level. If the turbine inlet pressure is 2.4 MPa, estimate the head losses in the penstock.
Water will be pumped from a reservoir free surface of which is at an elevation of...
Water will be pumped from a reservoir free surface of which is at an elevation of “z1” to reservoir the free water surface of which is at “z2”. Both of the reservoirs’ free surfaces at atmospheric pressures.Design a piping system that transmits water from the lower reservoir to the upper reservoir at a volumetric flow rate of Q (m3 /h). Q = 200 (m3/h) Za = 10(m) Zb= 60 (m) Zc = 75 (m) L1=200 (m) L2=125 (m) "Pipe material...
Water will be pumped from a reservoir free surface of which is at an elevation of...
Water will be pumped from a reservoir free surface of which is at an elevation of “z1” to reservoir the free water surface of which is at “z2”. Both of the reservoirs’ free surfaces at atmospheric pressures.Design a piping system that transmits water from the lower reservoir to the upper reservoir at a volumetric flow rate of Q (m3 /h). Q = 200 (m3/h) Za = 10(m) Zb= 60 (m) Zc = 75 (m) L1=200 (m) L2=125 (m) "Pipe material...
V5 What is the water elevation in reservoir B given the following: Elevation of reservoir A...
V5 What is the water elevation in reservoir B given the following: Elevation of reservoir A =2250m. The flow is 25m^3/sec. the temperature is 20C there are two pipes in series with the following characteristics D1 L1 D2 L2 2 m 1500m 1.6m 1000m There are gate valves at the exiting and entering the reservoirs There are two bends, 1 in each pipe size.There is is a globe valve on the downstream pipe. What is the elevation of Reservoir B?
Consider a small Pelton wheel hydro turbine, with a total head (reservoir surface to nozzle elevation...
Consider a small Pelton wheel hydro turbine, with a total head (reservoir surface to nozzle elevation difference) of Ht = 200 ft. The flowrate to the turbine is 185 gal/s. If the pipe (penstock) feeding the turbine has a length of 1000 ft, a diameter of 19.6 in, and a friction factor of f = 0.005, determine the percent of total head lost in the pipe (penstock). Submit your answer as a percentage but without the percent symbol. ***NOTE: The...
Design a system to move 100 gpm of water from a river with surface water elevation...
Design a system to move 100 gpm of water from a river with surface water elevation of 201.35 ft msl to a tank with surface water elevation = 246.55 ft msl. The tank is pressurized; the air pressure in the tank is 60 psig. The total length of pipe is 125 ft with 6 standard elbows all made of Sch 40 steel pipe. Your design should specify the nominal diameter of pipe (use only commercially available sizes) and the power...
Water at 70°F flows by gravity from a large reservoir at a high elevation to a...
Water at 70°F flows by gravity from a large reservoir at a high elevation to a smaller one through a 55-ft-long, 2-in-diameter cast iron piping system that includes four standard flanged elbows, a well-rounded entrance, a sharp-edged exit, and a fully open gate valve. Taking the free surface of the lower reservoir as the reference level, determine the elevation z1 of the higher reservoir for a flow rate of 10 ft3/min. The density and dynamic viscosity of water at 70°F...
Water flows at a rate of 30 ft3/s from a reservoir with elevation 45 ft to...
Water flows at a rate of 30 ft3/s from a reservoir with elevation 45 ft to a lower one with elevation 0 ft through a pipe Of length 1800 ft with bends, elbows, entrances and exits contributing a total of minor losses Of ?K = 2.5. The pipe has a roughness e = 0.0005ft. -Determine the pipe diameter needed. -How important are minor losses? -Plot the EGL.
What is the difference between surface water and ground water? Give differences with regard to chemical...
What is the difference between surface water and ground water? Give differences with regard to chemical composition, etc...
Q7:Which power plant uses the force of falling water from higher elevation to lower elevation for...
Q7:Which power plant uses the force of falling water from higher elevation to lower elevation for generation of electricity? Explain your answer with a diagram
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT