Ejector Design Calculation Xls -

| Parameter | Unit | Example Value | |-----------|------|----------------| | Motive fluid type | - | Steam/Water/Air | | Motive pressure (P_m) | bar(a) | 6.0 | | Motive temperature (T_m) | °C | 160 | | Suction pressure (P_s) | bar(a) | 0.2 | | Discharge pressure (P_d) | bar(a) | 0.5 | | Motive mass flow (ṁ_m) | kg/h | 500 | | Suction mass flow (ṁ_s) | kg/h | 250 | | Ejector type | - | Steam jet / Liquid jet |

Use Excel’s Data Validation for dropdowns (e.g., fluid type) and Conditional Formatting to highlight missing inputs. ejector design calculation xls

Be honest: A spreadsheet cannot handle:

For 95% of industrial sizing (steam jets, air ejectors, single-phase gas), an XLS is sufficient for preliminary and even detailed design. | Parameter | Unit | Example Value |

Motive nozzle exit Mach (choked):
[ M_e = \sqrt\frac2\gamma-1\left[ \left(\fracP_mP_exit\right)^\frac\gamma-1\gamma -1 \right] ]
Excel: =SQRT((2/(gamma-1))*((P_m/P_exit)^((gamma-1)/gamma)-1)) For 95% of industrial sizing (steam jets, air

Area ratio from Mach:
[ \fracAA^* = \frac1M\left(\frac2\gamma+1\left(1+\frac\gamma-12M^2\right)\right)^\frac\gamma+12(\gamma-1) ]
Excel: = (1/M)*((2/(gamma+1))*(1+((gamma-1)/2)*M^2))^((gamma+1)/(2*(gamma-1)))

Entrainment ratio from momentum (constant-area mixing, no shock):
Implemented via iterative Goal Seek or explicit solve.