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Fluid Mechanics for Chemical Engineers.Nevers

2-11Large Hydrocarbon storage tanks normally have a valve on their vents that allows free flow of air in or out when a liquid is being pumped in or out but that prevents air flow for small pressure differences caused by wind, solar heating of the tank, and changes in atmospheric pressure. these reduce the breathing losses of valuable hydrocarbons as well as the amount of atmospheric pollution.

These valves are typically set to open at an internal pressure of 4 inches of water and an external pressure of 2 inches of water.
a) Estimate the force of the roof at the opening pressures for internal pressure and for vacuum. -oil storage tank has a flat, horizontal, circular roof 120 feet in diameter.

b) Why is the setting larger for internal pressure than external pressure?

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M91001878

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