Effectiveness-NTU Calculator

Parallel-flow heat exchanger with constant heat capacities and no ambient heat loss; not a counterflow calculation.

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Result

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NTUua/min(hot,cold)

Capacity-rate ratiomin(hot,cold)/max(hot,cold)

Parallel-flow effectiveness(1-exp(-ua/min(hot,cold)*(1+min(hot,cold)/max(hot,cold))))/(1+min(hot,cold)/max(hot,cold))

Parallel-flow heat rate(1-exp(-ua/min(hot,cold)*(1+min(hot,cold)/max(hot,cold))))/(1+min(hot,cold)/max(hot,cold))*min(hot,cold)*(th-tc)