Pressure Energy
Calculate the potential of pressure energy in a incompressible fluid.
The pressure energy in an incompressible fluid volume, like a pressurized tank with water, can be expressed as
ΔE = Δp / ρ (1)
where
ΔE = potential energy (J/kg, Btu/lb)
Δp = pressure difference (Pa (N/m2), lb/ft2)
ρ = density of fluid (kg/m3, lb/ft3)
Example - Pressure Energy in a Water Tank
The pressure in a water tank is 10 bar (106 Pa) . With density of water 1000 kg/m 3 the potential pressure energy can be calculated as
ΔE = (106 Pa) / ( 1000 kg/m3)
= 1000 J/kg
