Choose the ejector type, fluids, operating pressures and flows and the connection types – based on the standard 1-D jet-apparatus theory (Sokolov–Zinger) the calculator determines the entrainment ratio and gives the overall dimensions a, b, c, D and the nominal diameters of connections A, B, C with a sketch.
How the calculator works
Liquid–liquid
Momentum equation of the cylindrical mixing chamber (Sokolov–Zinger) with velocity coefficients of nozzle, chamber, diffuser and suction inlet.
Gas–gas, steam
Gas-dynamic functions λ, π(λ), q(λ); Laval nozzle, critical suction regime, diffuser with η = 0.8.
Liquid–gas and gas–solids
Homogeneous two-phase model: throat momentum equation and diffuser energy equation with isothermal gas compression.
Steam–liquid
Condensing injector: steam saturation table, isentropic expansion, momentum and heat balance.