Steam enters a turbine operating at steady state at 500 lbf/in.2, 600°F, and exits as saturated vapor at 2 lbf/in.2. The power developed by the turbine is 2.5×106 Btu/h and the steam flow rate is 15,000 lb/h. Heat transfer occurs at a location on the surface of the turbine where the average temperature is 300°F. Neglecting kinetic and potential energy effects
a. Determine heat transfer rate, in Btu/h.
b. Determine the rate of entropy production, in Btu/h°R.
c. Draw a T-s diagram.

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa