Heat, Mass and Momentum Transfer in a Condensing Ejector Mixing Section. Part I. Mixing Section Analysis. Part II. Experimental Data,

Abstract : Many applications of the condensing ejector involve the pumping of a gas mixture containing a condensable vapor and one or more non-condensable gases. A theoretical model for the mixing process is given. presence of a high-velocity liquid jet surrounded by the higher Correlations for heat- and mass-transfer coefficients are used where necessary. Boundary conditions are satisfied for velocity, temperature, and shear stress at the liquid jet-gas stream interface. Wall shear stresses and compressible flow aspects for the gas stream are included. Available experimental data have been used to evaluate the mixing section analysis for condensing ejector operation with carbon dioxide as the non-condensable gas and steam as the condensable vapor. Direct comparisons with measured axial static pressure distributions and observed choking conditions are included. (Author)