Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Which of the following power plant is an example of Tidal energy?
a.
Onshore system
b.
offshore System
c.
Salter Duck System
d.
None of these
Estimate the average power available in a tidal basin if the area of the tidalbasin A is 18 × 106 m2, the tidal range H is 4.6 m, and tidal period τ is9 h = 32,400 s. The sea water density ρ is 1025 kg/m3.
For a tidal range at a particular place with 2 tides daily of 10m, and the surface tidal energy harnessing plant of 9km^2, if the specific gravity of water is 1025.18kg/m^3, determine the total energy potential per day of the plant.
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- At a proposed hydroelectric power plant site, the average elevation of headwater is 600m and the tailwater elevation is 480m. The average annual water flow is determined to be equal to that volume flowing through a rectangular channel 4m wide and 0.5m deep and average velocity of 5.5m/s. Assuming the plant will operate 350 days/year, find the energy kwh that the plant site can developed if the hydraulic turbine that will be used has an efficiency of 78% and generator efficiency of 90%. Consider a headwork loss of 4% of the available head.arrow_forwardThe flow of a river is 150 cubic feet per second at a site where a 75 feet hydrostatic head canbe created by the erection of a dam. What is the potential capacity (in kW) of a hydroelectricpower plant if installed at this site? Consider that hydraulic efficiency of energy conversioncan be 80%, and that the electric efficiency can be 90%.arrow_forwardDetermine the total energy production of a run-of-river plant having an total efficiency of 85%. It receives flow by means of a penstock, 400m long with 1.2m diameter, and f=0.015 in Darcy-Weisbach equation. The available head is 200m and seasonal fluctuations of upstream and downstream water levels are ignored. The flow duration data are tabulated as below.arrow_forward
- A tidal lagoon has Kaplan turbines each producing 14MW to generate the 300MW rated output. Given that the density of water is 1030kg/m^3, the tidal range is 10m and the efficiency is 0.9, identify the FLOW RATE and MEAN VELOCITY making assumptionsarrow_forwardTwo reservoirs A and B have elevations of 250 m and 100 m, respectively. It is connected by a pipe having adiameter of 250 mm and a length of 100 m. A turbine, with an efficiency of 0.95, which is installed at a point inbetween A and B, is used to supply 233 kW of electric power to a nearby community. If the total head loss as watertravelled from reservoir A to B is 25 m, determine the discharge inside the pipe in liters per second.arrow_forwardDuring a prefeasibility survey, you have identified a feasible site for a micro hydropower scheme. If you’ve measured a gross head of 40 m, and from the hydrological analysis, a design flow of 150 l/s appears to be available throughout the year, what would be the likely installed capacity? Assume an overall efficiency of 60%.arrow_forward
- 1. In a 3.0 m wide rectangular channel, the discharge is 15.0 m⅔. Calculate the critical depth and the specific energy for the flow in the channel.arrow_forwardNeed asap... A village has 1,182 persons. Each person uses 13.4 kWh of electricity per day. They are considering installing a small run of river hydroelectric facility where the flow rate is 3.0 m3/s and the equivalent head is 20 m. The system has 90% efficiency and pipe losses are expected to be 5%. Determine if the proposed run-of-river facility can produce the required daily energy requirements if a micro hydrokinetic water turbine is used.arrow_forwardAt 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 141,092,838 181,285,628 162,653,256arrow_forward
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