On the basis of the developed model, we studied the following design parameters of the jet ejector as functions of the length and the cone angle of the diffuser: pressure recovery, temperature and concentration of the refrigerant in the solution, and velocities of the gas and liquid drops. Polynomial correlations were employed to calculate the thermodynamic properties. The steady-state model was based on unidimensional balance equations of mass, energy and momentum for the liquid and gas phases. To facilitate the design of a jet ejector for absorption machines, a numerical model of simultaneous mass and heat transfers between the liquid and gas phases in the jet ejector was developed. The mixing process in the jet ejector is very intensive as a result of spray generation of the liquid phase and of extensive subcooling of the weak solution in the solution heat exchanger. The purpose of incorporating a jet ejector into an absorption system is to improve the preabsorption of the refrigerant coming from the evaporator by the weak solution, i.e., to improve the overall absorption process.
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