ε = (T1 − T2) / (T1 − T_cw) - CAC effectiveness. Modern marine CAC typically 0.70–0.85.
Formula
$$ \varepsilon = \frac{T_1 - T_2}{T_1 - T_\text{cw}} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $T_1$ | Air after compressor | °C | turbocharger |
| $T_2$ | Air after CAC | °C | CAC outlet |
| $T_\text{cw}$ | CW inlet to CAC | °C | CW pump outlet |
Sources
- ASHRAE Handbook - Heat Exchangers.