Pressure Energy

Pressure energy in a incompressible fluid

The pressure energy in an incompressible fluid volume, like a pressurized tank with water, can be expressed as

E = dp / ρ                                (1)


E = energy (J/kg)

dp = pressure difference (Pa, N/m2)

ρ = density (kg/m3)

Example - Pressure Energy in a Water Tank

The pressure on a water tank is 10 bar (106 Pa). With density of water 1000 kg/m3 the pressure energy can be calculated as

E = (106 Pa) / (1000 kg/m3)

   = 1000 J/kg

Related Topics

  • Fluid Mechanics - The study of fluids - liquids and gases. Involves velocity, pressure, density and temperature as functions of space and time

Related Documents

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