Ejector Design Calculation Xls Link

A robust spreadsheet typically follows these sequential calculations: Key Formula/Logic Compression Ratio ( CRcap C cap R ) Assess performance feasibility 2 Expansion Ratio ( ERcap E cap R ) Determine motive energy 3 Entrainment Ratio ( ) Calculate suction capacity (Use semi-empirical constants A–H) 4 Nozzle Sizing Find throat ( A1cap A sub 1 ) & outlet area ( A2cap A sub 2 and isentropic expansion 5 Mixing & Diffuser Find mixing diameter ( A3cap A sub 3 Function of combined mass flow and Pccap P sub c 3. Critical Formulas for Excel Use these semi-empirical equations (valid for ) in your cells: Entrainment Ratio ( ): Constants (approximate): Nozzle Throat Area ( A1cap A sub 1 ): 4. Implementation Resources

Design a single-stage steam ejector to pull 100 kg/h of air from a vessel at 0.2 bar_abs, discharge to 1.0 bar_abs. Motive steam at 5 bar_g, 150°C. ejector design calculation xls

[ R = \fracW_suctionW_motive ] Used to determine ejector type (single-stage, multi-stage). Motive steam at 5 bar_g, 150°C