Engineering, 28.11.2019 21:31 mayachojnicki
An electric plant that produces 10 x 109 kwh/year has an annual investment expenditure of $43.5 x 10/year for an expected lifetime of 25 years, with no remaining salvage value. the capital cost of the plant is repaid at 5% discount or interest rate. total annual operating cost at the plant is $20 x 106/year, and annual return to investors at 5% of the operating cost plus capital repayment cost.
(a) what is the levelized cost of electricity in $/wh?
(b) if they charge at this cost and assuming no other cost, estimate when will they reach breakeven point?
(c) if they charge at this cost and assuming no other cost, estimate the return on investment, if any?
Answers: 2
Engineering, 03.07.2019 15:10
If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.
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Engineering, 04.07.2019 19:10
Acircular aluminum shaft mounted in a journal is shown. the symmetric clearance gap between the shaft and journal is filled with sae 10w-30 oil at t 30°c. the shaft is caused to turn by the attached mass and cord. develop and solve a differential equation for the angular speed of the shaft as a function of time.
Answers: 2
Engineering, 04.07.2019 19:10
Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)
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Engineering, 06.07.2019 02:30
A75mm diameter shaft is supported in a journal bearing 75mm long with a diametral clearance of 0. 1mm. it supports a radial load of 1000 n and is lubricated with sae 50 oil at 70°c. find the friction torque and the power loss when the crankshaft rotates at 2900 rev/min.
Answers: 1
An electric plant that produces 10 x 109 kwh/year has an annual investment expenditure of $43.5 x 10...
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