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Steam at 2000 psi and 1200 deg F enters a turbine operating at steady state. Partway through the turbine, 34% of the entering mass flow is extracted at 700 psi and 600 deg F. The rest of the steam exits the turbine as a saturated vapour at 1 psi. The turbine develops 7.3 x 106 Btu/h while heat transfer to the surroundings occurs at a rate of 4.4 x 104 Btu/h. Neglecting changes in kinetic and potential energy; determine the mass flow rate of steam entering the turbine in lbm/s.
heat is to be conducted along a circuit board that has a copper layer on one side. the circuit board is 15 cm long and
a pitot-static tube used to measure air velocity is connected to a differential pressure gage. if the air temperature
water at 20 degrees celsius is flowing with velocity of 0.5 ms between two parallel flat plates placed 1 cm apart.
a 1 hp electric motor drives a water pump. the pump volumetric flow rate is 2103 m3s at 300 k.a determine the head loss
consider a non-ideal vapor-compression cycle where refrigerant 134a flows at a rate of 0.05 kgs. the refrigerant enters
Determine the temperature at which the diffusivity D of Cu in Al is twice the diffusivity at 500K. Using your result for D of Cu in Al at 500K, estimate the distance that a Cu impurity would diffuse in Al at 500 K after 1 hour. Use the simple estimat..
Finding exit velocity from air nozzle, Air enters a nozzle operating at steady state at 800 ºR with a negligible velocity and exits the nozzle at 570 ºR.
a 15 kg block b is being pulled along a smooth surface by a winch a. assume the winch is a 10 kg disc with a constant
Calculate the delta velocity required to change the inclination of a circular orbit at 32,000 km altitude from a 28.5 degree inclination to an inclination of 45 degrees. Compute the propellant used if the satellite weighs 1200 lbs after the maneuver.
two rigid tanks a and b of equal volume v1 m3 are connected by a pipe and valve. initially the valve is closed and the
determine the minimum initial velocity at which the ball must be kicked in order for it to just cross over the 3m high
saturated water vapor in a closed sysytem is condensed by cooling it at constant pressure to a saturated liquid at
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