Ejector Design Calculation Xls Fixed Jun 2026

) is a function of the motive pressure, temperature, and nozzle throat diameter. Performance Curves:

Determines the amount of motive steam required to move the suction load. Nozzle Sizing: Calculates the throat diameter ( ) based on the sonic flow of motive steam. Mixing Chamber Design: ejector design calculation xls fixed

To build a robust calculation sheet, you must define the following input variables: A. Motive Fluid Properties Usually high-pressure steam or air. Temperature ( Tmcap T sub m ): Needed to determine specific volume. Flow Rate ( Wmcap W sub m ): The mass flow available to do the work. B. Suction Fluid Properties Suction Pressure ( Pscap P sub s ): The vacuum level you aim to maintain. Entrainment Ratio ( ): The ratio of suction gas to motive gas ( ). This is the most critical output of your calculation. C. Discharge Conditions Discharge Pressure ( Pdcap P sub d ): The pressure the ejector must overcome (back-pressure). 3. The Step-by-Step Calculation Process ) is a function of the motive pressure,

Must be higher than the discharge pressure. Mixing Chamber Design: To build a robust calculation

A "fixed" calculation sheet typically follows these logical steps: Entrainment Ratio ( Ercap E sub r

Then: W_m = W_s / R (kg/h)