Estimation of ejectorʹs main cross sections in steam-ejector refrigeration system

This paper describes the calculation of main cross sections of a steam-ejector, operating in a refrigeration system. For the detailed calculation of ejector a method has been developed which employs functions describing the thermodynamic properties of steam. The influence of three major parameters: generator pressure, condenser and evaporator temperature on cross sections of ejector is discussed. The design conditions were: generator pressure (6–8 bar), condenser temperature (40–50 °C) and evaporator temperature (4–10 °C). It is confirmed that the dimensions of ejector depend on the operation conditions.