Units

Energetic Efficiency

Exergetic Efficiency

References

Boiler

${\eta }_b=\frac{Q_{o,b}}{Q_{i,b}}$

${\psi }_b=\frac{X_b}{\phi Q_{i,b}}$

Generator

${\eta }_g=\frac{W_{e,g}}{Q_g}$

${\eta }_g=\frac{Q_{e,g}}{\phi Q_g}$

Electrical Energy

${\eta }_e=\frac{W_{e,m}+{\eta }_g{Q}_g}{W_{e,m}+Q_g}$

${\psi }_e=\frac{W_{e,m}+{\psi }_g\phi Q_g}{W_{e,m}+\phi Q_g}$

Total

${\eta }_e=\frac{W_{e,m}+{\eta }_g{Q}_g+{\eta }_b{Q}_{i,b}}{W_{e,m}+Q_g+Q_{i,b}}$

${\eta }_e=\frac{W_{e,m}+{\psi }_g\phi Q_g+{\psi }_b\phi Q_{i,b}}{W_{e,m}+\phi Q_g+\phi Q_{i,b}}$

Process Efficiency

${\varphi }_p=\frac{B_{\text{product}}}{B_{\text{input}}}$ where ${\varphi }_p$ is the exergetic efficiency.

Exergy Losses (ANERGY)

${\varphi }_L=\frac{B_{\text{losses}}}{B_{\text{input}}}$