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A rigid insulated tank contains 0.6 kg of air, initially at 200 kPa, 20 C. The air is stirred by a paddle wheel until its pressure is 250 kPa. Using the ideal gas model with Cv = 0.72 kJ/(kg*K), determine, in kJ, (a) the work, (b) the change in exergy of air, and (c) the amount of exergy destroyed. Ignore the effects of motion and gravity, and let To = 20 C, Po = 100 kPa.
a differential pressure is measured with a u-tube monometer having water as the manometer fluid. the results of the
a weight attached to a spring of stiffness 525 nm has a viscous damping device. when the weight is displaced and
consider a gas turbine with turbine staging and reheating. it operates under the following conditions.inlet air at 285
1. calculate the velocity at the exit of a diffuser when air at 100kpa and 20oc enters it with a velocity of 500ms and
the ball is kicked with an initail speed of 8 ms at an angle of 40 degrees with the horizontal. find the equation of
Average pressure at end of stroke? Upsetting force required at the end of the stroke? If friction is neglected, what is the amount of upsetting force?
five hundred cubic feet per second of water flow in a rectangular open channel 20 ft wide and 8 ft deep. after passing
derive the intersection coordinates for the first quadrant for the following curves a- modified goodman with langer
for a product at an aql of 2.5 and lot size of 5000 using mil standard 105e what is the probability of going to
refrigerant 134a enters a compressor operating at steady state as saturated vapor at -8 degress celcius and exits at a
a bullet of mass m0 is fired horizontally with a velocity v0 into the slender bar of a pendulum of mass m and length l
At a particular location a hot spring is available to provide a heat source for a vapor power cycle of a power station and not far away a melt water river from a glacier is available to provide a heat sink. the hot spring has a flow of 1500 liters/se..
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