Méthodologie
Convertit débit et dose d’ingrédient actif en demande active, puis utilise les fractions massiques actives et masse volumique saisies pour évaluer alimentation, stockage et débit de pompe. Concentration et masse volumique du produit sont des entrées utilisateur; elles ne sont pas déduites.
Active demand = flow × user-entered active dose × 0.001. Commercial product mass = active demand / user-entered active mass fraction, where fraction means active ingredient mass per commercial product mass.
Product solution volume = commercial product mass / user-entered product density (kg/L). Normal feed = daily solution volume / 24 h.
Working storage = daily product volume × storage days. Gross storage basis = working storage / usable storage fraction.
Minimum and maximum feed cases use the entered design doses. Required turndown = maximum / minimum feed when minimum feed is positive.
Pump-rate screening assumes entered duty pumps share the required feed equally. Pump staging/on-off control is not modeled.