Ejector Design Calculation Xls Official

Quickly adjust motive pressure to see its impact on suction load.

Ejector design calculation XLS is a spreadsheet template used to calculate the design parameters of an ejector. It is a Microsoft Excel-based tool that simplifies the calculation process, making it easier for engineers to design and optimize ejectors. The XLS template typically includes formulas and equations for calculating various design parameters, such as nozzle diameter, mixing chamber diameter, and diffuser diameter.

A detailed ejector calculation XLS typically includes the following logical sheets or sections: Operating Conditions Input : Users define the Motive fluid pressure ( cap P sub p ), Suction/Entrained fluid pressure ( cap P sub e ), and Discharge/Condenser pressure ( cap P sub c Compression & Expansion Ratios Compression Ratio ( cap C sub r The ratio of discharge pressure to suction pressure ( Expansion Ratio ( cap E sub r The ratio of motive pressure to suction pressure ( Entrainment Ratio (

Ensure mixing velocities do not exceed sonic speeds inappropriately (unless designed to). Optimize Motive Flow: Minimize Wmcap W sub m for the required Wscap W sub s to reduce energy costs. Benefits of the XLS Approach Speed: Instant recalculation when changing inputs. ejector design calculation xls

For high-quality templates or verified models, you can refer to these industry sources:

This sheet functions as your control dashboard. It requires cells for: Pressure ( Pmcap P sub m ), Temperature ( Tmcap T sub m ), Molecular Weight ( Mmcap M sub m ), Specific Heat Ratio ( Suction Fluid: Pressure ( Pscap P sub s ), Temperature ( Tscap T sub s ), Molecular Weight ( Mscap M sub s ), Flow Rate Requirement ( Wscap W sub s Discharge Condition: Target Discharge Pressure ( Pdcap P sub d Tab 2: Thermodynamic & Property Lookup

The area where the high-velocity jet meets and pulls in the suction fluid. Quickly adjust motive pressure to see its impact

Excel solves these iteratively using built-in goal seek or explicit formulas for ideal gas (air, steam, refrigerant).

Ejectors, or steam jet ejectors, are critical components in process industries, providing a reliable and maintenance-free method for creating vacuum. Designing these devices, however, involves complex thermodynamic and fluid dynamic calculations. Using an (Excel spreadsheet) tool streamlines this process, moving from tedious manual calculations to rapid, iterative design optimization.

of the device based on the properties of the motive and suction fluids Key Content of an Ejector Design XLS The XLS template typically includes formulas and equations

An is an indispensable tool for engineers dealing with vacuum systems. By incorporating thermodynamic fundamentals, momentum balance, and empirical data, these spreadsheets enable optimized, high-performance ejector designs.

Uses a linear or polynomial correlation with specific constants (labeled A through J). Non-Choked Flow (

The primary gas enters the nozzle, where it expands to supersonic speed. The throat area ( Atcap A sub t ) is determined by critical mass flow. Critical Pressure Ratio: B. Mixing Section (Entrainment)

If you are building or looking for a design spreadsheet, ensure it includes: