Answered: Patm 2 cm I.D. Ball Valve Patm

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter25: Special Refrigeration System Components

Section: Chapter Questions

Problem 7RQ: Two types of relief valves are_______and ______.

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Question

The drain on a large tank of liquid consists of a ball valve with a 2 cm inside diameter that connects to the tank with a well-rounded flow entrance. The height of the fluid surface above the valve entrance is denoted h. The pressure in the air space above the surface of the fluid is the same as that outside of the tank, P_atm.

With the valve fully open, the shape of the tank can be taken to a cylinder with a diameter of 2 meters. Use integration to find the
amount of time it takes for the tank to drain down to the level of the valve ℎ = 0, from an initial level of ℎ = 6
meters.

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