# Exchanged Heat in a Heat Exchanger

### Exchanged Heat in a Heat Exchanger Formula

\(\large{ S = h \; A \; LMTD }\)

Where:

\(\large{ Q }\) = exchanged heat duty

\(\large{ A }\) = exchange area

\(\large{ h }\) = heat transfer coefficient

\(\large{ LMTD }\) = logarithmic mean temperature differential

Tags: Equations for Heat Transfer Equations for Heat Exchangers