Log Mean Temperature Difference in Heat Transfer Formulas

The Log Mean Temperature Difference (LMTD) is a logarithmic average of the temperature difference between the hot and cold streams at each end of the exchanger. And is denoted by LMTD. Log Mean Temperature Difference is usually measured using the Kelvin for Temperature. Note that the value of Log Mean Temperature Difference is always positive.

Formulas to find Log Mean Temperature Difference in Heat Transfer

fxLog Mean Temperature Difference for CoCurrent FlowGo

fxLog Mean Temperature Difference for Counter Current FlowGo

List of variables in Heat Transfer formulas

fx Outlet Temperature of Hot Fluid Go

fx Outlet Temperature of Cold Fluid Go

fx Inlet Temperature of Hot Fluid Go

fx Inlet Temperature of Cold Fluid Go

FAQ

What is the Log Mean Temperature Difference?

The Log Mean Temperature Difference (LMTD) is a logarithmic average of the temperature difference between the hot and cold streams at each end of the exchanger. Log Mean Temperature Difference is usually measured using the Kelvin for Temperature. Note that the value of Log Mean Temperature Difference is always positive.

Can the Log Mean Temperature Difference be negative?

No, the Log Mean Temperature Difference, measured in Temperature cannot be negative.

What unit is used to measure Log Mean Temperature Difference?

Log Mean Temperature Difference is usually measured using the Kelvin[K] for Temperature. Celsius[K], Fahrenheit[K], Rankine[K] are the few other units in which Log Mean Temperature Difference can be measured.

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