Determine the final temperature of the water at the second tank

Electric power is to be generated by installing a hydraulic turbine–generator at a site 100 mbelow the free surface of a large water reservoir that can supply water at a rate of 1500kg/s steadily. Determine the potential power output of the turbine (kW).

Underground water is being pumped into a pool whose cross section is 3 m × 4 m while water is discharged through a 5-cm-diameter orifice at a constant average velocity of 5 m/s. If the water level in the pool rises at a rate of 1.5 cm/min, determine the rate at which water is supplied to the pool, in m3/s.

A hair dryer is basically a duct of constant diameter in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it through the resistors where it is heated. If the density of air is 1.20 kg/m³ at the inlet and 0.895 kg/m³ at the exit, determine the percent increase in the velocity of air as it flows through the dryer. P kg/m³ 1.20 kg/m³ The percent increase in the velocity of air is 42 %.

Water at 90C is being pumped from a large storage tank at 1 atm abs at a rate of 0.189 m3/min by a pump. The motor that drives the pump supplies energy to the pump at a rate of 2 hp. The water pumped through a heat exchanger, where it gives up 700 kW of heat and is then delivered to a large open storage tank at an elevation of 20 m above the first tank. What is the final temperature of the water to the second tank? Neglect kinetic energy.

Water flows through two adiabatic turbines and a heat exchanger as shown in the picture. Hot air is used to provide additional energy to the water between the two turbines. The first turbine has a power output of 8,000 kW. Determine the power output of the second turbine in kW and the process efficiency of each turbine. Determine the state of steam in turbine 1, Formulate the 1st Law for turbine 1, and solve for the flow rate of steam. Formulate the 1st Law for the heat exchanger, and solve for the temperature at exit

Consider a condensing heat exchanger operating with two separate fluids, R-134a and the water. Assuming the operating conditions listed in the table below, and that the pressure drop of the fluids are negligible, find the mass flowrate of the water (kg/s) and Q (kW) transferred between the R-134a and the water. m Enters Exits Fluid Water ? Liquid at T₁ = 5 °℃ Liquid at T₂ = 25 °℃ T2 = 35 °C R-134a 10 kg/min P₁ = 1 MPa and T₁ = 70 °C

The mass flow rate of the gas in a gas turbine is 40kg/s. The specific enthalpy and velocity in the inlet are 1300 kJ/kg and 16 m/s respectively while in the outlet are 350 kJ/kg and 50 m/sec respectively. Calculate the power output in kW of the turbine if there is a heat loss of 1000 kW. EXPLAIN STEP BY STEP

A steam plant. the pressure levels are 10 kPa and 6000 kPa, and the steam leaves the turbine as saturated vapor. The pump efficiency is 0.70 and the turbine 0.75. determine the thermal efficiency of the plant

The utility company is selling electric power for $0.06/kWh at night, and $0.13/kWh for power produced in the day. Company WaterCO builds a large reservoir 50m above lake level to pump water from the lake to the reservoir at night, and then letting the water flow from the reservoir back into the lake during the day; creating power as a pump-motor operation and a turbine-generator for reverse flow. Here, the water flow rate of 2 m3/s is used in either direction and the irreversible head loss of the piping system is 4m. The combined pump-motor and turbine-generator efficiencies are 80% each. If the system operates for 10 hours each in the pump and turbine modes during a normal day, what is the potential revenue this pump-turbine system can generate per year?