Pressure drop

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Pressure drop is a term used to describe the decrease in pressure from one point in a pipe or tube to another down stream. This is usually the result of friction of the fluid against the tube. Tube convergence, divergence, turns and other physical properties will affect the pressure drop. High flow rates in small tubes give larger pressure drop. Low flow rates in large tubes give lower pressure drop.^[1]

For example, in a typical garden hose the pressure in the hose is 40 psi and at sea level the atmospheric pressure is about 15 psi. Therefore, the pressure drop across the nozzle is 25 psi.

[edit] See also

• Pressure measurement
• Atmospheric pressure
• Voltage drop

[edit] References

1. ^ The Christmas Tree Farm, http://www.christmas-tree-farm.com/dripterm.html