Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Chapter 11, Problem 16P
To determine
Find the payback period for the facility.
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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.
(a)Evaluate hydropower plants in terms of social and economic impact with your own evaluation.
(b)Hydropower plants could be classified according to the quantity of water, water head, plant capacity, and load characteristics. Categorize the hydropower plants according to the water head.
3. Explain different components of small hydroelectric power system and their design considerations.
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- A constituent of a city proposed to build a hydroelectric powerplant to extract power from a waterfall that is 69 meters high and has an average discharge of 4.20 m³/s. The mayor promised to consider the project if it yields at least 2.5 MW of power even if the turbine efficiency is at 70%. Will this project be considered or not?arrow_forwardA generating system consists of the following units:(A) 1 x 10 MW unit(B) 1 x 20 MW unit(C) 1 x 30 MW unit(D) 1 x 40 MW unitThe 10, 20 and 30 MW units have forced outage rates of0.08. The 40 MW unit has afull forced outage rate of0.08 and a 50% derated state which has a probability of0.06. (a) Calculate the LOLE for this system for a single daily peak load of 60 MW. (b) Whatis the LOLE for the same condition if the 40 MW unit is represented as a two-statemodel using an Equivalent Forced Outage Rate?arrow_forwardWelcome to the family of TechCrachi, Recently you've asked for Unblur this Chegg Question on our website:Determine 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.Q (m3/s) 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0Duration, t (%) 100 95 80 65 55 40 35 25 20 10arrow_forward
- Discuss the benefits of pumped storage hydropower (PSH).arrow_forwardProblem- Two turbo-generators, each capacity 25,000 kW, have been installed at a hydel power station. The load on the hydel plant varies from 15,000 kW to 40,000 kW. What is the total installed plant capacity and the load factor.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
- The 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_forwardA megascale hydro project being considered will require approximately 1 million tons of concrete for the dam structure alone. The plant should produce about 2,000 MWe of power for its entire lifetime of about 100 years. How large an impact might this plant have on GHG emissions?arrow_forwardCalculate the continuous power that will be available from hydroelectric plant having an available headof 300 meters, catchment area of 150 sq. km, annual rainfall 1·25 m and yield factor of 50%. Assumepenstock, turbine and generator efficiencies to be 96%, 86% and 97% respectively. If the load factor is40% what should be the rating of the generators installed ?arrow_forward
- Question 2 Calculate the "Annual Energy Production" of a hydropower system if the maximum power output of the system is 65.4 kW. Question 3arrow_forwardA hydroelectric power station is supplied from a reservoir having an area of 50 km2and a head of 50 m.If overall efficiency of the plant is 60%, find the rate at which the water level will fall when the stationis generating 30,000 kWarrow_forwardIn a hydroelectric project, a discharge of 400 m/s is available with net head of 32 m. If two turbines of same size having specific speed Ns are required to give an efficiency of 90 % then Ng (in Sl unit) of each turbine is_ (Assume speed of each turbine to be 152 r.p.m.).arrow_forward
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