Ejector Design Calculation Xls Fixed Extra Quality Guide

If your application involves liquid-gas ejectors (e.g., slurry transport or refrigeration), a standard fixed XLS for gases will fail. You need a using the homogeneous equilibrium model (HEM). In this case, the "fixed" aspect means the spreadsheet uses a locked density correction factor: ρ_mix = 1 / ( (x/ρ_g) + ((1-x)/ρ_l) ) where x is the quality. Ensure your fixed XLS has cells for liquid surface tension and nozzle cavitation index.

Ejector formulas come from three different origins: API 619 (American), ESDU (European), or empirical steam tables. A fixed spreadsheet hardcodes unit conversions (psi to bar, °F to °C, lb/hr to kg/s) into protected cells, ensuring you don’t accidentally multiply pressure by density logarithmically. ejector design calculation xls fixed