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A solar thermal plant with energy storage capability is to be constructed at about a 40° latitudeto provide the electric energy to a system whose 24-hr average load is 100 MWe during the winter.Assume that the solar thermal power plant will have a 25% energy conversion efficiency; that thenighttime load is 40% of the total load; and that 10% of the energy that must be stored is lost. (a)Determine the total land area (in km2) required for the reflectors (heliostats). (b) For comparisonalso determine the area (in km2) required for a fixed horizontal system. In both cases, it is believedthat a parabolic reflector system can be set up so that the reflectors cover 45% of the land area onwhich they are placed. The reflected energy collected at 40° latitude in winter is 6 kW·hr/m2·dayfor a tracking system, and only 1.85 kW·hr/m2·day for a horizontal fixed system.
what has happened to the value of the u.s. dollar relative to the japanese yen over the past six months? what fiscal
a balance of trade trade balance is the difference between the monetary values of exports and imports of a countrys
A firm has the following quadratic cost function TC = 0.025Q2+ 12Q + 500 , Find the coordinates of the point where the marginal cost curve intersects the average total cost curve.
The population of a city at a certain time is P. If the annual rate of growth of the population is 2 %, after how many years does this city's population doubles? What if the rate is 2.5 %
please write a 700-1000 word paper in which you address the questions below. also please do your best to format your
make sure you define the topics but give real life examples to prove that you understand the concepts.explain the
Explain the graphs theoretically what happens about banning the price discrimination, like what happens to demand because of the fcc passing.
Identify three criticisms of GDP as a measure of economic activity.
Why does an initial $400 billion annual decrease in consumption spending make income fall by more than $400 billion per year. Explain why an initial change in planned aggregate expenditure results in a much larger change in equlibrium income.
Neolithic Revolution
The production technology is fully characterized
Harte contracted with Connolly to install a new roof on Connolly’s house. It was agreed that the roofing shingles were to be “russet glow” a shade of brown. The roof was installed, and many of the shingles were discoloured showing streaks of yellow.
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