Ejector Design Calculation Xls Fixed

The high-pressure motive fluid enters the nozzle. The process is modeled as an isentropic expansion.

The ratio of suction mass flow to motive mass flow, 3. How to Use the Ejector Design Calculation XLS (Fixed) ejector design calculation xls fixed

In an Excel template, this is usually estimated using the or the Heckman method , which factors in the expansion ratio ( ) and the compression ratio ( Motive Gas Velocity ( Vmcap V sub m The high-pressure motive fluid enters the nozzle

Generate a clean printout sheet with the vital physical dimensions for the fabrication machine shop: Motive nozzle orifice diameter (mm) Nozzle setback distance (mm) Diffuser throat diameter (mm) Parallel throat length (mm) Diffuser outlet diameter (mm) 5. Verification and Verification Checklist How to Use the Ejector Design Calculation XLS

Before diving into the calculation rows of an XLS sheet, it is essential to understand the physics governing a steam jet ejector.

For gas or steam systems, the motive nozzle often operates under choked (critical) flow conditions where the fluid reaches Mach 1 at the throat.

Since ejector equations are implicit (the answer depends on the answer), a standard Excel formula often creates a circular reference. Here is how to automate a "Fixed" geometry check: