Questions from Thermal Fluid Science

Q: What is the caloric theory? When and why was it abandoned

What is the caloric theory? When and why was it abandoned?

Q: A hydraulic turbine has 50 m of head available at a flow

A hydraulic turbine has 50 m of head available at a flow rate of 1.30 m3/s, and its overall turbine–generator efficiency is 78 percent. Determine the electric power output of this turbine.

Q: In a hydroelectric power plant, water flows from an elevation of

In a hydroelectric power plant, water flows from an elevation of 400 ft to a turbine, where electric power is generated. For an overall turbine generator efficiency of 85 percent, determine the minimu...

Q: Reconsider Prob. 12–51E. Determine the flow rate of

Reconsider Prob. 12–51E. Determine the flow rate of water if the irreversible head loss of the piping system between the free surfaces of the inlet and the outlet is 36 ft. Data from Prob. 12-51: In...

Q: A fan is to be selected to ventilate a bathroom whose dimensions

A fan is to be selected to ventilate a bathroom whose dimensions are 2 m × 3 m × 3 m. The air velocity is not to exceed 7 m/s to minimize vibration and noise. The combined ef...

Q: Water flows at a rate of 20 L/s through a

Water flows at a rate of 20 L/s through a horizontal pipe whose diameter is constant at 3 cm. The pressure drop across a valve in the pipe is measured to be 2 kPa, as shown in Fig. P12â€
...

Q: The water level in a tank is 34 ft above the ground

The water level in a tank is 34 ft above the ground. A hose is connected to the bottom of the tank at the ground level, and the nozzle at the end of the hose is pointed straight up. The tank cover is...

Q: A large tank is initially filled with water 4 m above the

A large tank is initially filled with water 4 m above the center of a sharp-edged 10-cm-diameter orifice. The tank water surface is open to the atmosphere, and the orifice drains to the atmosphere. If...

Q: Water enters a hydraulic turbine through a 30-cm-diameter

Water enters a hydraulic turbine through a 30-cm-diameter pipe at a rate of 0.6 m3/s and exits through a 25-cm-diameter pipe. The pressure drop in the turbine is measured by a mercury manometer to be...

Q: A 78-percent-efficient 12-hp pump is pumping

A 78-percent-efficient 12-hp pump is pumping water from a lake to a nearby pool at a rate of 1.2 ft3/s through a constant-diameter pipe. The free surface of the pool is 32 ft above that of the lake. D...