What Properties Make a Good Heat Exchanger?

• Effectiveness maximised

  • e = (1-e(-NTU(1-C*)))/(1-C*e(-NTU(1-C*))) C* ? 1
  • e = NTU/(1-NTU) C* = 1

• Volume minimised

  • Dimensionless: Vrat

• Pressure Drop Fraction minimised

  • 10 % used as a limiting value here

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