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Explain the Bernoulli Energy Equation
Accounts for the fluid energy at any point in a fluid flow system. Units are in ft. Developed for energy without friction. The total energy of a fluid flowing without friction losses is constant, but the energy associated with each component may vary. Including hƒ (head or energy lost due to friction) accounts for the loss of energy from point 1 to point 2 in a fluid system.
(p/γ)1 + (v2 /2g)1 + (Z)1 = (p/γ)2 + (v2/2g)2 + (Z)2 + hƒ
Three components:
Pressure energy = p/γ
γ = specific weight of fluid
Units = ƒt = (lb/ƒt2) / (lb/ƒt3)
Velocity energy = v2/2g
Units = ƒt = (ƒt/sec)2/2(ƒt/sec2)
Potential energy = Z
Units = ƒt
Total Energy = Pressure + Kinetic + Potential Energies
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