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Question- In one stage of a process for the manufacture of liquid air, air as a gas at 4 atm absolute and 250 K is passed through a long insulated 3-in. ID pipe, in which the pressure drops 3 psi because of frictional resistance to flow. Near the end of the line, the air is expanded through a valve to 2 atm absolute. State all assumptions.

1. Compute the temperature of the air just downstream of the valve.

2. If the air enters the pipe at the rate of 100 lb/hr, compute the velocity just downstream of the valve.

Please explain why you chose your answer!

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Category:- Chemistry
Reference No.:- M91248055

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