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1. Complete one of the following projects involving methods for storing electricity considered thus far in this book (see Secs. 2.7, 4.8.3). Report your findings in a report providing a full rationale together with supporting documentation.
(a) For each storage method, identify its principal sources of exergy destruction and develop an exergetic efficiency for it. Use principles of this chapter with assistance from the technical literature as required.
(b) From these storage methods, identify a subset of them well suited for storage duty associated with a 300-MW wind farm. On the basis of cost and other pertinent factors for such duty, place the subset in rank order.
An escape artist is chained and placed in a 1 m x 1 m x 2 m box in which one side is hinged at the top of the box. The box is lowered into water until the top surface is just below the water surface. At that point, an 8 cm diameter hole is opened 0.7..
calculate the span of a differential pressure transmitter that is mounted 10 inches below the bottom instrument tap on
a mountain climber determines his altitude using atmospheric pressure and temperature measurement data. he uses a
air at 10 deg c and 80 kpa enters the diffuser of a jet engine steadily with a velocity of 200 ms. the inlet area of
r-22 undergoes a process between two states. the process has an isentropic compressor efficiency of 80. at state 1 the
Angela needs 20 quarts of 50% antifreeze solution in her radiator. She plans to obtain this by mixing some pure antifreeze with an appropriate amount of a 40% antifreeze solution. How many quarts of each should she use?
a force f 12t where t is in seconds is applied to a 2kg box at rest on a horizontal surface uk .3 for 5 seconds.
if in vickers hardness test a sample is tested at 30kgf load and length of diagonals measured were 0.497 mm and 0.502
A cantilevered beam with a rectangular cross section is loaded by a force perpendicular to the beam centerline at the free end. The cross section is 100mm high and 25 mm wide. The vertical load at the beam end is 40,000 N. Calculate how long the beam..
saturated steam with 120.8 kpa is used to concentrate 1000 kgh of juice from 12 to 20 solids at 95degc steam and juice
a wire has a length of 7.20 10-2 m and is used to make a circular coil of one turn. there is a current of 3.60 a in the
helium at 68 degrees farenheit and 14.7 psia in a large tank flows steadily and isentropically thorugh a converging
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