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Using the Kelvin - Planck statement of the second law of thermodynamics, demostrate the following corollaries:
a) the coefficient of performance of an irreversible refrigeration cycle is always less than the coefficient of performance of a reversible refrigeration cycle when both exchange energy by heat transfer with the same two reservoirs.
b) all reversible refrigeration cycles operating between the same two reserviors have the same coefficient of performance.
Design a displacement function to drive the piston to follow as close as possible the aortic pressure curve. Make sure that the jerk is finite along the whole rotation of the cam.
at a amusement park there are 180kg bumper cars a b and c that have riders as shown with masses 40 kg 60kg and 30 kg
the need arises in a laboratory for 2000cm3 of an antifreeze consisting of a 30 mole-percent solution methanol in
steel rods rho 7832kgm3 cp 434jkg.k and k 63.9wm.k are heated in a furnace to 850degc and then quenched in a water
using the fact that the tension in the rope must remain constant in all sections of the rope calculate the total force
During the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the work input during this process. R(air)=287j/KgK
What is the advantage of sketching an object first before drawing it using CAD?
a pump steadily draws water at a mass flow rate at 20 lbms through a piping arrangment. at the pipe inlet the pressure
the turntable of a record player rotates initially at the rate 33 revmin and takes 14.07 s to come to rest. what is the
a compressor is operating in a continuous steady-state manner to produce a gas a temperature t2 and pressure p2 from
the compressor turbine of a simple gas turbine each have isentopic efficiencies of 90. the compressor pressure ratio is
consider a large furnace that can supply energy in the form of heat at 2000 r at a steady rate of 3000 btus. determine
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