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Refrigerant 134a is compressed at steady state from 2.4 bar, 0oC, to 12 bar, 50oC. Refrigerant enters the compressor with a volumetric flow rate of 0.38 m3/min, and the power input to the compressor is 2.6 kW. Cooling water circulating through a water jacket enclosing the compressor experiences a temperature rise of 4oC from inlet to exit with a negligible change in pressure. Heat transfer from the outside of the water jacket and all kinetic and potential energy effects can be neglected. Determine the mass flow rate of the cooling water, in kg/s.
Calculate the time rate of change dHB/dt of angular momentum about point B when the particle passes the bottom of the guide at C.
cold water enters a steam generator at 20c is vaporized at 165c and exits as a superheated vapor at 350c. the steam
Find the compression ratio, cutoff ratio, the thermal efficiency, the mean effective pressure, and the P -v and T-s diagrams clearly showing all corners.
air enters the compressor section of a turbojet engine at 15 c and 0.1 mpa at a rate of 100 m3min. the air leaves at
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determine the coordinates xc and yc of the point where the resultant load must act in order to produce uniform normal stress in the column.
a gas is contained in a vertical piston-cylinder arrangement. the 50-lbm piston initially rests on the bottom stops.
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