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A power cycle operates between a lake's surface water at a temperature of 300 K and water at a depth whose temperature is 285 K. At steady state the cycle develops a power output of 10 kW, while rejecting energy by heat transfer to the lower temperature water at the rate 14,400 kJ/min. Determine (a) the thermal efficiency of the power cycle and (b) the maximum thermal efficiency for any such power cycle.
the combustion chamber on a jet has air entering at 2 kgs and fuel enters through a fuel injector at .07 kgs. determine
a 0.4 m3 rigid vessel initially contains a saturated liquid-vapor mixture of water at 100 c. the water is heated until
Find the velocity of the bullet and block just after impact.
the cost per hour of running a ship at a speed of v knots is pound 4 v3 2048. find the speed which makes the cost of
the piston of a piston-cylinder device containing gas has a mass of 60kg and a cross-section area of 0.04m. the local atmospheric pressure is 0.97bar, and the gravitational acceleration is 9.81ms. determine the pressure inside the cylinder?
a feed rate of 200gpm of a hydrocarbon mixture at 70c is being pumped from tank at 1 atm abs pressure to a distillation
a tank has a stirrer that delivers 200 kj of work on 100 kilograms of water at 45 degrees celcus. assume all of the
air at t11300 0r p116 lbfin2 enters a counterflow heat exchanger operating at steady state and exits at p214.7 lbfin2.
the triangular plate rotates about a fixed axis through point o with the angular properties indicated determine the
the 50-lb package starts from rest slides down the smooth ramp and is stopped by the spring. the coefficient of static
an oven has five radiant heaters each one is rated at 15 kw. it should heat some 2-kg steel plates from 20 degrees
a large plate contains a central crack of length 2 mm and is subjected to a cyclic stress normal to the crack which
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