A hydroelectric power plant has a dam 80 ft high and water c

A hydroelectric power plant has a dam 80 ft high, and water can flow through the dam water turbines at 800,000 Ibm per minute over a 60 ft drop. If the turbines can convert the loss in potential energy of the water into electric power at an efficiency of 85%, how much power can the facility produce in megawatts? For n process where pV = C, p1 = 100 kpa. V1 = 0.8 m3, and p2 = 1400 kpa, determine the final volume. If the work can be described by sigma p delta V, determine its value for this process from 100 to 1400 kpa. The water pump shown below, delivers 2.0 m^3/min at 100- kpa gage pressure through a 5 cm diameter pipe. If the water is at 101 kpa pressure and 27 degree C and has negligible velocity at inlet station 1, and if there is no heat transfer or friction in the system, determine the power required by pump, Wk. pump, in KW and hp. Air flows through the converging - diverging nozzle, show n below. The density of air at station a b 0 040 Ibm/ft^3, at station B Ls 0.060 Ibm ft^3 and at station C Is 0.050 Ibm/ft^3. If the velocity of air entering at stage A b 1000 ft/s, determine: The mass flow rate of air. The velocity of air at station B. The velocity of air at station C. Water at 66 degree F enters an ideal pump as a saturated liquid and leaves at 1000 psia. Determine the ideal pump work and the enthalpy per unit mass of the water leaving the pump. Determine the specific volume by volume of saturated vapor and enthalpy of steam at 1.0 psia and 90% quality. Also determine the percent in the mixture.

Solution

1)P=0.85*32.2×800000*60/60*23.73=0.92 mw