Questions from Thermal Fluid Science

Q: Oil in an engine is being cooled by air in a crossflow

Oil in an engine is being cooled by air in a crossflow heat exchanger, where both fluids are unmixed. Oil (cph = 2047 J/kgâ‹…K) flowing with a flow rate of 0.026 kg/s enters the heat e...

Q: Consider a recuperative crossflow heat exchanger (both fluids unmixed) used

Consider a recuperative crossflow heat exchanger (both fluids unmixed) used in a gas turbine system that carries the exhaust gases at a flow rate of 7.5 kg/s and a temperature of 500°C. The...

Q: A piston–cylinder device contains 0.85 kg of refrigerant

A piston–cylinder device contains 0.85 kg of refrigerant 134a at –10°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The...

Q: Determine the vertical force applied by water on the container.

Determine the vertical force applied by water on the container.

Q: What is the difference between saturated vapor and superheated vapor?

What is the difference between saturated vapor and superheated vapor?

Q: 10 kg of R-134a fill a 1.115-

10 kg of R-134a fill a 1.115-m3 rigid container at an initial temperature of –30°C. The container is then heated until the pressure is 200 kPa. Determine the final temperature and the initial pressure...

Q: Solve this system of two equations with two unknowns using appropriate software

Solve this system of two equations with two unknowns using appropriate software: x3 − y2 = 5.9 3xy + y = 3.5

Q: What is the specific internal energy of water at 50 kPa and

What is the specific internal energy of water at 50 kPa and 200°C?

Q: What is the specific volume of water at 5 MPa and 100

What is the specific volume of water at 5 MPa and 100°C? What would it be if the incompressible liquid approximation were used? Determine the accuracy of this approximation.

Q: What is the specific volume of R-134a at 20°

What is the specific volume of R-134a at 20°C and 700 kPa? What is the internal energy at that state?