Questions from Thermal Fluid Science

Q: A mass of 3 kg of saturated liquid–vapor mixture of

A mass of 3 kg of saturated liquid–vapor mixture of water is contained in a piston–cylinder device at 160 kPa. Initially, 1 kg of the water is in the liquid phase a...

Q: A mass of 12 kg of saturated refrigerant-134a vapor is

A mass of 12 kg of saturated refrigerant-134a vapor is contained in a piston–cylinder device at 240 kPa. Now 300 kJ of heat is transferred to the refrigerant at constant pressure whi...

Q: Name four physical quantities that are conserved and two quantities that are

Name four physical quantities that are conserved and two quantities that are not conserved during a process.

Q: A 2-m3 rigid tank initially contains air whose density is

A 2-m3 rigid tank initially contains air whose density is 1.18 kg/m3. The tank is connected to a high-pressure supply line through a valve. The valve is opened, and air is allowed to enter the tank un...

Q: Reconsider Prob. 6–99. Using appropriate software, investigate

Reconsider Prob. 6–99. Using appropriate software, investigate the effect of the exit cross sectional area of the hair dryer on the exit velocity. Let the exit area vary from 25 to 7...

Q: Air enters the duct of an air-conditioning system at 15

Air enters the duct of an air-conditioning system at 15 psia and 50°F at a volume flow rate of 450 ft3/min. The diameter of the duct is 10 in, and heat is transferred to the air in the duct from the s...

Q: An insulated rigid tank is initially evacuated. A valve is opened

An insulated rigid tank is initially evacuated. A valve is opened, and atmospheric air at 95 kPa and 17°C enters the tank until the pressure in the tank reaches 95 kPa, at which point the valve is clo...

Q: A rigid, insulated tank that is initially evacuated is connected through

A rigid, insulated tank that is initially evacuated is connected through a valve to a supply line that carries steam at 4 MPa. Now the valve is opened, and steam is allowed to flow into the tank until...

Q: Both a gage and a manometer are attached to a gas tank

Both a gage and a manometer are attached to a gas tank to measure its pressure. If the reading on the pressure gage is 80 kPa, determine the distance between the two fluid levels of the manometer if t...

Q: A 2-m3 rigid insulated tank initially containing saturated water vapor

A 2-m3 rigid insulated tank initially containing saturated water vapor at 1 MPa is connected through a valve to a supply line that carries steam at 400°C. Now the valve is opened, and steam...