At=mmCd×Pm×k⋅MR⋅Tm(2k+1)k+1k−1cap A sub t equals the fraction with numerator m sub m and denominator cap C sub d cross cap P sub m cross the square root of the fraction with numerator k center dot cap M and denominator cap R center dot cap T sub m end-fraction open paren the fraction with numerator 2 and denominator k plus 1 end-fraction close paren raised to the the fraction with numerator k plus 1 and denominator k minus 1 end-fraction power end-root end-fraction Cdcap C sub d = Nozzle discharge coefficient (typically 0.95 to 0.97) = Universal gas constant = Molecular weight of water (18.02)
: The ratio of the mass flow rate of entrained vapor to the mass flow rate of motive steam. Geometric Dimensions Nozzle Throat Area ( cap A sub 1
The humble is an extraordinarily capable platform for ejector design calculation. By combining thermodynamic property tables, empirical area-ratio correlations, momentum balances, and iterative solvers, you can create a .xls file that rivals dedicated software – with the added advantages of transparency, customizability, and zero licensing cost.
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
A standard calculation sheet is generally organized into the following sections: Input Parameters Motive Fluid
At=mmCd×Pm×k⋅MR⋅Tm(2k+1)k+1k−1cap A sub t equals the fraction with numerator m sub m and denominator cap C sub d cross cap P sub m cross the square root of the fraction with numerator k center dot cap M and denominator cap R center dot cap T sub m end-fraction open paren the fraction with numerator 2 and denominator k plus 1 end-fraction close paren raised to the the fraction with numerator k plus 1 and denominator k minus 1 end-fraction power end-root end-fraction Cdcap C sub d = Nozzle discharge coefficient (typically 0.95 to 0.97) = Universal gas constant = Molecular weight of water (18.02)
: The ratio of the mass flow rate of entrained vapor to the mass flow rate of motive steam. Geometric Dimensions Nozzle Throat Area ( cap A sub 1 ejector design calculation xls
The humble is an extraordinarily capable platform for ejector design calculation. By combining thermodynamic property tables, empirical area-ratio correlations, momentum balances, and iterative solvers, you can create a .xls file that rivals dedicated software – with the added advantages of transparency, customizability, and zero licensing cost. empirical area-ratio correlations
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 and iterative solvers
A standard calculation sheet is generally organized into the following sections: Input Parameters Motive Fluid