LMTD for Heat Transfer Calculator

LMTD for Heat Transfer Calculation

Logarithmic Mean Temperature Difference

  • It is the mean temperature calculated to find the overall average heat transfer coefficients
  • LMTD is a logarithmic average of the temperature difference  (ΔTm) between the hot and cold feeds of  the heat exchanger
  • Understand the inlet and outlet of hot and cold fluid of the heat exchanger

Calculation of LMTD for Heat Exchanger

  • Calculate the log mean temperature difference (ΔTm) for the following two possible arrangements
    1. Parallel or counter Flow
    2. Counter Flow
  •  the Temperature differences () based on the types of heat exchangers
  • Calculate the Logarithmic mean temperature difference (LMTD)


LMTD Calculator