Ejector Design Calculation Xls Fixed !exclusive! (Safe ✮)

Use a lookup table for Steam Properties (IAPWS-IF97) to automate enthalpy and entropy shifts. Step 2: Mixing Zone Analysis

Below is the step-by-step logic for a (single stage), which forms the basis for gas/vapor ejectors.

What are your specific (e.g., steam, air, hydrocarbons)? What operating pressures are you targeting?

Cr=PcPecap C r equals the fraction with numerator cap P sub c and denominator cap P sub e end-fraction Pccap P sub c = Pressure of exiting vapor ( kPak cap P a Correlation for Choked Flow ejector design calculation xls fixed

The diffuser must slow the mixed fluid down to recover pressure.

An ejector (or eductor) is a device used to pump fluids using a high-pressure motive fluid. Designing an efficient ejector requires precise thermodynamic and fluid dynamics calculations.

Designing a high-performance ejector requires balancing complex fluid dynamics with practical mechanical constraints. For engineers tasked with sizing or verifying these systems, a reliable calculation model is essential—especially when working with units where the internal dimensions are unchangeable. Understanding the Fixed Geometry Ejector Use a lookup table for Steam Properties (IAPWS-IF97)

. Since the geometry is fixed, the ejector will only operate efficiently at its "design point." Off-Design Warning: "Note: Significant deviations in Motive Pressure ( cap P sub m

If you are currently troubleshooting or optimizing your spreadsheet, let me know:

To illustrate the use of the ejector design calculation XLS fixed, let's consider an example. Suppose we want to design an ejector to boost the pressure of a suction fluid from 100 kPa to 200 kPa using a motive fluid at 500 kPa. The flow rates of the motive and suction fluids are 1 kg/s and 0.5 kg/s, respectively. The fluid properties are: What operating pressures are you targeting

Using the motive pressure (P_m) and temperature (T_m), the fixed spreadsheet calculates the throat diameter (D_t).

A chemical plant in Louisiana had a 15-year-old ejector design XLS. It used 42 hidden VBA macros and a WHILE loop that frequently caused Excel to crash. Every time an engineer changed the motive steam temperature, the file would enter an infinite recalculation.

(PcPm)=(2γ+1)γγ−1open paren the fraction with numerator cap P sub c and denominator cap P sub m end-fraction close paren equals open paren the fraction with numerator 2 and denominator gamma plus 1 end-fraction close paren raised to the the fraction with numerator gamma and denominator gamma minus 1 end-fraction power

= (Dd / Dt)^2