Pressure Energy

Calculate the potential of pressure energy in an incompressible fluid. The pressure energy is expressed as ΔE = Δp / ρ, where ΔE is potential energy (J/kg), Δp is pressure difference (Pa), and ρ is density of fluid (kg/m³).

Calculator

Inputs

Pressure Difference (Δp) (Pa)

Fluid Density (ρ) (kg/m³)

Results

Pressure Energy (ΔE)-- J/kg

Pressure Difference (Pa)	Fluid Density (kg/m³)	Pressure Energy (J/kg)
100000	1000	100
500000	1000	500
1000000	1000	1000
2000000	1000	2000
1000000	800	1250
1000000	1200	833.33

Formula

ΔE = Δp / ρ

Where:

ΔE = potential energy (J/kg, Btu/lb)
Δp = pressure difference (Pa, lb/ft²)
ρ = density of fluid (kg/m³, lb/ft³)

Example

For a water tank with:

Pressure: 10 bar (10⁶ Pa)
Water density: 1000 kg/m³

The pressure energy is: ΔE = (10⁶ Pa) / (1000 kg/m³) = 1000 J/kg