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THERMAL

Heat Exchanger LMTD Calculator

Log mean temperature difference for a two-end exchanger.

Transparent calculationFormula and assumptions shown
01

Enter your values

02

Your result

LMTD43.280851K
FORMULA USEDLMTD = (ΔT₁−ΔT₂)/ln(ΔT₁/ΔT₂)
METHOD

How this calculation works

The calculator substitutes your values into the stated engineering relationship and evaluates the result using the displayed units. Change any input to recalculate instantly.

Important

This is an idealised engineering calculation. Confirm material properties, loading conditions and applicable design factors before specification or construction.