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A rigid container with volume 200 L is divided into two equal volumes by a partition. Both sides contains nitrogen, one side is at 2 MPa, 300?C, and the other at 1 MPa, 50?C. The partition ruptures, and the nitrogen comes to a uniform state at 100?C. Assuming the surroundings are at 25?C find the actual heat transfer and the irreversibility in the process.
The yearly average solar flux incident on a horizontal surface in the United States is about 180 W/m2. The average total energy demand in the United States is approximately 100 quads (100 × 1018 ) per year. Assuming an average efficiency of PV cells ..
a projectile is launched from the ground with v0100fts at t0 theta060 degrees. determine the time t when the velocity
saturated ammonia vapor at 30 degree in celcius is passed over 30 vertical flat plates each of which is 10 cm high and
A piston-cylinder device initially contains 1.11-kg saturated liquid water at 200 degree C. Now heat is transferred to the water until the volume quadruples and the cylinder contains saturated vapor only. Determine (a) the volume of the tank, (b) the..
water at 25 degrees c enters a heat exchanger at 0.1 kgs and exits at 50 degrees c. kerosene enters the other side of
a strain gage system is mounted on an airplane wing to measure wing oscillations and strain during wind gusts. the
a molybendenum metal pin is 25 mm long and 2mm in diameter. the air surrounding the pin is 200 degrees c the walls of
a container with volume 213 cubic cm is heated and allowed to expand to 1.44 times the original volume. as the
What methods are used to achieve low levels of corrosion by oxygen in boiler feed water? What measurements are essential to ensure that this is done satisfactorily, and what types of measurement could be used?
a compressor is used to pressurize pure oxygen for respiratory assistance applications. the pure oxygen enters the
the two-dimensional motion of a particle is defined by the relations r2acostheta and thetabt22 where a and b are
air enters the compressor of an air-standard brayton cycle with a volumetric flow rate of 60 m3s at 0.8 bar 280 k. the
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