Effectiveness-NTU Calculator: Master Parallel-Flow Heat Exchanger Performance

Calculate Parallel-Flow Heat Exchanger Effectiveness (ε)

Enter the dimensionless Number of Transfer Units.
Enter the ratio of minimum to maximum heat capacity rates (value must be between 0 and 1).
Calculation Results

Heat Exchanger Effectiveness (ε):

Calculate heat exchanger effectiveness (ε) using the NTU method. Input Number of Transfer Units (NTU) and Capacity Ratio (Cr) to determine performance for parallel-flow heat exchangers. Ideal for engineers and students needing quick, accurate thermal design insights. Optimize heat transfer efficiency.

Formula:

For a parallel-flow heat exchanger, the Effectiveness (ε) is calculated using the following formula:

ε = [1 - exp(-NTU * (1 + Cr))] / (1 + Cr)

Where:

  • ε: Heat Exchanger Effectiveness (dimensionless, between 0 and 1)
  • NTU: Number of Transfer Units (dimensionless, a measure of heat exchanger size)
  • Cr: Capacity Ratio (Cmin / Cmax) (dimensionless, between 0 and 1)

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