Ejector Design Calculation Xls Fixed

The mixed fluid enters a diverging section where velocity decreases, converting kinetic energy back into static pressure higher than the suction pressure. 2. Key Mathematical Models and Governing Equations

The high-velocity jet creates a localized vacuum, drawing in the suction fluid and mixing the two streams.

What are the (e.g., steam, air, natural gas, or liquid)? ejector design calculation xls fixed

In a fixed spreadsheet, avoid =ITERATION or circular references. Use these direct formulas.

Go to File > Options > Formulas → Disable "Enable iterative calculation". This stops the #VALUE! crashes. The mixed fluid enters a diverging section where

To develop a "fixed" or standardized , you need features that handle both the mechanical geometry and the thermodynamic performance of the device. A professional-grade spreadsheet should automate the calculation of the Entrainment Ratio ( ) , which is the key performance metric. Core Calculation Features

To fix or build an XLS calculator, you must program the underlying thermodynamic equations. The calculation sequence follows mass, energy, and momentum balances. Entrainment Ratio ( The entrainment ratio dictates how much motive steam ( Wmcap W sub m ) is required to lift a specific amount of suction gas ( Wscap W sub s What are the (e

Converts the pressure energy of the motive fluid into high-velocity kinetic energy (

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

| Parameter | Symbol | Unit | Cell Reference (Example) | Typical Value | | :--- | :---: | :---: | :---: | :---: | | | $P_m$ | bar (abs) | B2 | 10 | | Suction Fluid Pressure | $P_s$ | bar (abs) | B3 | 1 | | Discharge Pressure | $P_d$ | bar (abs) | B4 | 2 | | Motive Fluid Temp | $T_m$ | K | B5 | 300 | | Suction Fluid Temp | $T_s$ | K | B6 | 300 | | Molecular Wt (Motive) | $M_m$ | kg/kmol | B7 | 28 (Air/N2) | | Molecular Wt (Suction) | $M_s$ | kg/kmol | B8 | 28 | | Specific Heat Ratio ($k$) | $k$ | - | B9 | 1.4 | | Entrainment Ratio (Target) | $\omega$ | - | B10 | 0.5 (Mass ratio Suction/Motive) |