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Consider a combined gas-steam power plant. Water for the steam cycle is heated in a well-insulated heat exchanger by the exhaust gases of the gas turbine that enter at 800 K at a rate of 110 kg/s and leave at 380 K. Water enters the heat exchanger at 200?C and 8 MPa and leaves at 350?C and 8 MPa. If the exhaust gases from the gas turbine are treated as air with constant specific heats at room temperature, the mass flow rate of water through the heat exchanger is?
a gas initially at pinitial 1 bar and occupying a volume vinitial of 1 liter is compressed within apiston-cylinder
0.09m3 of a fluid at 0.7 bar are compressed reversibly to a pressure of 3.5 bar according to a law pvnconstant. the
problem i. steam at 5.0 mpa 500 degrees c enters an insulated turbine operating at steady state with a mass flow rate
a piston-cylinder device contains r-134a. initially the phase is saturated vapor at 160 kpa. the system then undergoes
the wall of a cold storage consists of three layers- an outer layer of ordinary bricks 25 cm thick a middle layer of
air at 30 celcius and 2 mpa flows at steady state in a horizontal pipeline with a velocity of 25ms . it passes through
a a rigid tank containing 20 kg of refrigerant 134a as saturated vapor at 1.0 bars and -26.43 c is heated until the
the 0.5m long container shown in the figure accelerates downhill 25 degrees to horizon so that the liquid surface is
suppose you have a choice between a straight triangular or rectangular fin constructed of aluminum with a base
3 kg of r22 in a piston-cylinder is initially at a pressure of 0.30 mpa and volume of 0.15m3. the system is then heated
air at mass flow rate of 10 kgs at 1 atm 300 k point1 enters an adiabatic compressor and exists at 8 atm 600 k point 2.
measurement of the electrical resistivity of gold wires have indicated that the equilibrium vacancy concentration
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