Charge Air Cooler - Effectiveness

Charge-air-cooler (CAC) thermal effectiveness - (T_in − T_out) / (T_in − T_sw).

CACEffectivenessEngine

CAC inlet T°CCAC outlet T°CSW inlet T°C

Effectiveness ε: 0.862 -

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\varepsilon = (T_{in} - T_{out}) / (T_{in} - T_{sw})

Symbol	Meaning	Unit
$T_in$	Compressor exit T	°C
$T_sw$	SW inlet T	°C

Source: MAN ES Performance Guide

In short

Charge-air-cooler (CAC) thermal effectiveness - (T_in \u2212 T_out) / (T_in \u2212 T_sw).

Learn the theory Engine Performance Monitoring: PMI Systems