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sci.CSTR-conversion-Damkohler Calculator
Calculates CSTR conversion from Damköhler number and determines equivalent PFR volume for same conversion. For first-order kinetics: X_CSTR = Da/(1+Da); X_PFR = 1 − exp(−Da) — at Da = 1, CSTR gives 50% vs PFR's 63% conversion.
Inputs
Tau S
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
K Per S
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
N Reactors
Count of items or occurrences.
Results
conversion X (CSTR series)
Sample size or count used in the calculation.
single CSTR conversion
Sample size or count used in the calculation.
equivalent PFR conversion
Sample size or count used in the calculation.
Damköhler number Da = k·τ
Sample size or count used in the calculation.
X = 1 − 1/(1+Da)^n
Sample size or count used in the calculation.
CSTR vs PFR
Reference formula or conversion factor shown for context.