Engineering error rate dropped from 18% to 2%. The fixed XLS allowed junior engineers to size ejectors without fear of breaking the model.
Implement an Entrainment Ratio Entrained Gas Temperature/Molecular Weight Correction Factor ( ) .
Before deploying your fixed XLS sheet to a production environment, verify its outputs against empirical standards:
The high-velocity motive stream meets the low-pressure suction fluid, transferring momentum through turbulent mixing.
The ejector design calculation XLS fixed is a spreadsheet tool used to design and optimize ejectors. The tool is based on the fundamental principles of fluid mechanics and thermodynamics. The spreadsheet allows users to input various parameters, such as inlet and outlet pressures, flow rates, and fluid properties, and calculates the ejector's performance.
To build a reliable calculator, structure your Excel sheet into three sections: , Calculations , and Outputs .
): Use established correlations like those from Al-Dessouky et al. which use constants (A through J) to relate pressures and expansion ratios.
If your suction fluid contains air or CO2, the molecular weight changes, which drastically alters the entrainment ratio.
Most high-pressure gas ejectors operate under choked (sonic) conditions at the nozzle throat. The critical pressure ratio for a gas is:
8.5
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