Calculate density & viscosity based on temperature and composition (air/steam mixture). Formula (air at 1 atm): rho_gas (lb/ft³) = (1.325 * P_psia) / (T_degR) Use Excel’s SLOPE / INTERCEPT for steam/air blends.
For random packing (Leva’s method): ΔP (inWC/ft packing) = C1 * (L/G)^C2 * (Gas mass velocity)^C3 Store constants (C1, C2, C3) in a lookup table for different packing types (2" Pall rings, 1" Intalox, etc.). scrubber design calculation excel best
: This specialized sheet focuses on particulate removal using the Calvert calculation method. It handles humidification of inlet gas, saturated gas flow rates, and throat velocity to determine geometry. Key Calculation Components to Include Calculate density & viscosity based on temperature and
: These are considered the gold standard for regulatory and preliminary engineering. They provide detailed capital and annualized cost estimates : This specialized sheet focuses on particulate removal
where Q is the gas flow rate (m³/s), A is the cross-sectional area of the duct (m²), V is the gas velocity (m/s), ρ is the gas density (kg/m³), and T is the temperature (K).
Embed a hidden sheet with all conversions (scfm to acfm, °F to °R, psi to psf). Use =CONVERT(value, "from_unit", "to_unit") if you have Excel’s Analysis ToolPak.
Cross-Sectional Area: Calculated by dividing the flow rate by the operating velocity. 3. Calculating the Packing Height (Mass Transfer)