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sci.heat-exchanger-effectiveness-NTU Calculator
Calculates heat exchanger effectiveness ε = Q_actual/Q_max from NTU and heat capacity ratio Cr = C_min/C_max for various flow arrangements. Counterflow ε = NTU/(1+NTU) for Cr=1 — at NTU=3 with Cr=0, effectiveness = 1−e^(−3) = 95%.
Inputs
Cmin Kw K
Maximum throughput or storage. Operating near 100% capacity typically increases failures and wait times.
Cmax Kw K
Maximum throughput or storage. Operating near 100% capacity typically increases failures and wait times.
Ntu
Count of items or occurrences.
Hx Type
Reference formula or conversion factor shown for context.
Results
heat exchanger effectiveness ε
The value at the specified point or condition.
capacity ratio Cr = Cmin/Cmax
The proportional relationship between two quantities.
NTU = UA/Cmin
Sample size or count used in the calculation.
type
The classification or type assigned based on the inputs.