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A solar collector receives solar radiation at a rate of 0.315 kW per m2 and delivers the heat to a storage unit whose temperature remains a constant 500 K. A power cycle receives heat from the storage unit, generates electricity at the rate of 570 kW and discharges heat to the atmosphere (20°C). For operation at steady state, calculate the theoretical minimum solar collector area required.
water flows 2m deep at 2ms in a rectangular channel. find the change in depth and in water surface elevation caused by
a cast- iron cylinder of 300mm bore carries a pressure of 30 newtons per square millimitrewhat should be its thickness
an insulated vertical piston-cylinder device initially contains 11.56 kg of water 6.94 kg of which is in vapor phase.
it is observed that the time for the ball to strike the ground at b is 2.5 s. determine the speed va and angle ua at
a retarding force is applied to a body moving in a straight line so that during an interval of its motion its speed u
1 a barrel is rolled up an incline 20 ft along its length and 6 ft in vertical height by means of a rope that is
in a diesel cycle the cutoff ratio is two and the compression ratio is eighteen. at state 1 the air is 14.7 psia and
What is the minimum energy in the conduction band, and where can it be found in the Brillouin zone?
the average electrical generating capacity of the united states was about 475000 mw in 2007. if trends continue this
consider a body of arbitrary shape. if the pressure distribution over the surface of the body is constant e.g.
a molten mixture of salt nano3-kno3 is used as the heat transfer fluid for application in a parabolic trough solar
Kinetic and potential energy effects can be ignored. Evaluate the work required and the heat transfer, each in kW.
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