At a river a suitable site for a run-of-the river installation has an available head of 13 m between the water intake and the turbine house. Environmental guidelines permit to extract water for hydropower only if it is in excess of 2.8 m3/s. Estimate the power generated in kW when the flow in the river is 10.9 m3/s for a turbine with an efficiency of 90%. Present the answer as integer in kW.

At a river a suitable site for a run-of-the river installation has an available head of 13 m between the water intake and the turbine house. Environmental guidelines permit to extract water for hydropower only if it is in excess of 2.8 m3/s. Estimate the power generated in kW when the flow in the river is 10.9 m3/s for a turbine with an efficiency of 90%. Present the answer as integer in kW.

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter18: Energy Storage

Section: Chapter Questions

Problem 20P

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8-147 In a hydroelectric power plant, water at 20°C is supplied to the turbine at a rate of 0.55 m³/s through a 200-m-long, 0.35-m-diameter cast iron pipe. The elevation difference between the free surface of the reservoir and the tur- bine discharge is 140 m, and the combined turbine-generator efficiency is 85 percent. Disregarding the minor losses because of the large length-to-diameter ratio, determine the electric power output of this plant.
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At a potential hydro-plant site, the average elevation of headwater is 582m, the tailwater is 480m. The average annual water flow was determined to be equal to that volume flowing through a rectangular channel 8.15m wide, a depth of 1.22m and the velocity is 4.6m. The turbine efficiency is 87%, generator efficiency is 95%, and a head loss is 3.5% of the gross head. Find the following: a. the generator power in kW 44,150 28,206 36,490 b. the annual energy (kWH per year) that can be produced if the plant operation is 345 days per year 235,154,731 302,142,714 244,334,189 c. the annual income of the plant if the cost of the energy produced is P0.60 per kW-hr 141,092,838 181,285,628 162,653,256
8. Energy Equation Water at the Lake William Dam enters a hydraulic turbine through a 30 cm diameter pipe at a rate of 0.6 m³/s and exits through a 25-cm diameter pipe. For the system, elevation effects are negligible and the pressure drop across the turbine is measured to be 148 kPa. For a combined turbine-generator efficiency of 83 percent, calculate (a) hurbine and (b) Wubrine- You look in the FE handbook and see: W turbine = 7/turbine-gen”ightutine, e turbine-genhtubine, e 30 cm diameter 25 cm diameter Turbine Generator
From a reservoir whose surface elevation is at 30 m, water is pumped to an elevated reservoir at an elevation of 95 m. The head loss in the 60 cm diameter suction pipe is 10 m and that of the 50 cm discharge pipe is 15 m. Determine the following if the discharge is to be maintained at 480 liters per second. Assume total head loss between the two reservoirs is 20 m. Compute the power input of the pump assuming it operates at 80% efficiency.
Pls answer ASAP. A hydroelectric power plant takes in 1060 ft³/s of water through its turbine and discharges it to the atmosphere at 7 ft/s. The head loss in the penstock is 66 ft. Estimate the power extracted by the turbine in horsepower. Show fbd.
Water from a reservoir is pumped over a hill through a pipe 90 cm in diameter, and a pressure of 200 kPa is maintained at the summit where the pipe is 90 m above the reservoir. The quantity pumped is 1.40 m/s and by reason of friction there is a head loss of 3 J/N between the reservoir and summit. If the pump is 90% efficient, determine the input power furnished to the water.
2.1 A hydro-electric power station has a reservoir area of 2.7 km² and a capacity of 4.6 x 106m³. The effective head of water is 100 metres. The penstock, turbine and generation efficiencies are 95%, 90%, and 85%, respectively. Instructions :round off to 2 decimal places 1. Determine the total electrical energy that can be generated from the power station (kWh). 2. Determine the depth of the reservoir (metres) 3.Determine the fall in reservoir volume level is the load of 100 kW is supplied for 5 hours (%).
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The water is pumped to a higher elevation. diameter = 450 mm pressure = 250 kPa (it is maintained at the summit point) *Summit point = the pipe is 110 meters above the water reservoir* Q (discharge) = 1.56 m^3/sec Total loss due to friction = 8 m Determine the output power that must be furnished to the water. Kindly refer to the figure below.