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An ideal combined Rankine cycle contains a reheat and a open feedwater heater, this is also referred to as a regenerative cycle. Steam enters the high pressure turbine at 500psi, 700F and is extracted to an open feedwater heater at 120 psi at saturated liquid. The rest of the steam is reheated to 700F at the constant pressure of 120psi and if fed to the lower pressure turbine. The condenser pressure is 2 psi. Calculate the thermal efficiency of the cycle and the net work per pound mass of steam.
estimate the density of an aluminum-magnesium alloy used for soda cans as a weighted average of the densities of
in an effort to increase thrust it is decided that an aft-fan should be added to this engine. the aft-fan creates a
consider an aircraft powered by a turbojet engine that has a pressure ratio of 9. the aircraft is stationary on the
a thin flat plate is installed in a water tunnel as a splitter. the plate is 0.3 m long and 1 m wide. the freestream
refrigerant 134-a is contained in a 4 ft3 tank at 160 lpfin2. at the beginning the saturated vapour occupies a volume
the velocity field for a fluid particle is described by the equation given below. determine the acceleration of the
the pressure in a garden hose is 60 psi. and the hose is 1.5 cm in inner diameter. the water exits in a stream 3mm in
the heat transfer coefficient for air flowing over a sphere is to be determined by observing the temperature -time
air initially at a dry-bulb temperature of 45oc and relative humidity of 10 is adiabatically humidified to 60 relative
Determine the distance d between the cars at which the driver of car A must apply his brakes to just avoid colliding with carB.
a piston-cylinder device contains 0.8 kg of steam at 300degc and 1 mpa. steam is cooled at constant pressure until
team dynamic are based on a number of interpersonal and environmental factors that influence a teams behavior. what
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