The Logarithmic Mean Temperature Difference (LMTD) is used in heat exchanger calculations to determine the temperature driving force for heat transfer. This calculator helps you calculate the LMTD between two fluids in a heat exchanger.
Learn how to use the LMTD calculator for heat exchanger design and analysis
The Logarithmic Mean Temperature Difference (LMTD) is a logarithmic average of the temperature differences between the hot and cold fluids in a heat exchanger. It is used to calculate the heat transfer in heat exchangers and is particularly useful for heat exchangers where the temperature of either fluid changes along the exchanger's length.
The LMTD formula accounts for the changing temperature differences along the length of a heat exchanger. Instead of using the arithmetic mean of the temperature differences, the logarithmic mean provides a more accurate representation of the average temperature driving force for heat transfer.