Xls — Ejector Design Calculation

Best for liquid-liquid ejectors (e.g., pumping seawater with a pressurized water jet). Assumes mixing occurs in a constant cross-section throat.

Key equation:

Stop performing complex iterative thermodynamic calculations by hand. This Ejector Design Calculation Excel Spreadsheet is designed to help mechanical engineers, process engineers, and students rapidly size and evaluate single-stage gas ejectors (jet pumps).

This user-friendly XLS tool automates the calculation of compression ratios, entrainment ratios, and motive fluid consumption based on fundamental thermodynamic principles. ejector design calculation xls

Ejectors are widely used in refrigeration, vacuum systems, chemical processing, and aerospace. Their advantages include no moving parts, simplicity, and the ability to handle corrosive or two-phase flows. However, design is challenging due to coupled shock waves, mixing layers, and compressible flow effects.

Conventional design relies on constant-pressure or constant-area mixing theories (Keenan, Neumann, & Lustwerk). These require iterative solution of gas dynamics equations. An Excel-based tool offers:

This paper describes the theoretical basis, step-by-step spreadsheet implementation, and validation. Best for liquid-liquid ejectors (e

✅ I’ve prepared a ready-to-use Ejector Design Spreadsheet that includes:

📥 Click here to download → (replace with your actual download link)

(If you’re building your own, search for “Constant Pressure Mixing Model” – e.g., the ESDU 85032 method works well in Excel.) Ejectors are widely used in refrigeration, vacuum systems,

This Excel sheet is built upon the One-Dimensional Flow Theory and the Conservation of Energy and Mass.

Calculate the basic dimensionless numbers:

You might ask: Why not use commercial CFD or dedicated software like Aspen EDR?

An ejector design calculation XLS offers three unique advantages:

Spreadsheet calculations are approximate. Always: