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Saturated water vapor at 300 degrees F enters a compressor operating at steady state with a mass flow rate of 5 lb/s and is compressed adiabatically to 800 lbf/in^2. If the power input is 2150 hp, determine for the compressor (a) the isentropic compressor efficiency and (b) the rate of entropy production, in hp/degrees R. Ignore kinetic and potential energry effects.
Refrigerant 134a at 700 kPa and 40oC is expanded adiabatically in a closed system to 60 kPa. Determine the work produced, in kJ/kg, and final enthalpy for an isentropic expansion efficiency of 80.
a system consists of liquid water in equilibrium with a gaseous mixture of air and water vapor. how many phases are
Evaluate the effect of the water spray on efficiency (net work out divided by heat input) and net power out per kg/s of dry air coming into the turbine.
the 500 lbf motor is supported on springs with a total stiffness of 5000 lbfin. the springs have a damping ratio of
the reynolds number of a fluid flowing through a 5-cm-diameter, square-edged orifice plate meter within a 15-cm pipe is 250,000. Find the discharge coefficient for flange taps.
ammonia enters a heat exchanger operating atsteady state as a superheated vapor at 14 bar 60degc where itis cooled and
mechanical vibrations a helical spring of stiffness k is cut into two halves and a mass m is connected to be 0.5 s. if
the 10-kg sphere c is released from rest when theta0 and the tension in the spring is 100 n. determine the speed of the
multi-stage flash distillation is used to desalinate seawater so it is fit for human consumption. a flash distillation
steam at 320oc flows in a stainless steel pipe k 15wm. oc whose inner and out diameters are 5 cm and 5.5 cm
a gas is contained in a vertical piston-cylinder arrangement. the 50-lbm piston initially rests on the bottom stops.
a geothermal heat pump is used to provide a house with 5 kw of heating. the house is at 25degc and the ground
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