Calculate (m³/m²·h):
SolverOk SetCell:="$M$10", MaxMinVal:=2, ValueOf:=0, ByChange:="$B$5" SolverSolve UserFinish:=True Goal: Minimize diameter while keeping pressure drop < 40 mmH2O/m. If absorption is concentrated (CO₂ in MEA, SO₂ in caustic), the NTU equation becomes implicit. Use circular references with Enable Iterative Calculation (max iterations 1000, max change 0.0001). 4. Error Trapping In every formula, add IFERROR . For example: scrubber design calculation excel best
Why? Because Excel offers transparency, rapid iteration, and customizability that black-box software cannot match. When built correctly, an Excel-based scrubber design tool can be 95% as accurate as expensive simulators at 0% of the cost. Calculate (m³/m²·h): SolverOk SetCell:="$M$10"
Function ConvertUnits(Value, FromUnit, ToUnit) ' Case logic for "m3/hr to CFM", etc. End Function Instead of manual trial for diameter, use VBA to call Solver: SO₂ in caustic)