Solved: Submarines change their depth by adding or
Chapter 5, Problem 5173(choose chapter or problem)
Submarines change their depth by adding or removing air from rigid ballast tanks, thereby displacing seawater in the tanks. Consider a submarine that has a 700 m3 air-ballast tank originally partially filled with 100 m3 of air at 1500 kPa and 158C. For the submarine to surface, air at 1500 kPa and 208C is pumped into the ballast tank, until it is entirely filled with air. The tank is filled so quickly that the process is adiabatic and the seawater leaves the tank at 158C. Determine the final temperature and mass of the air in the ballast tank.
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