Cooler
Introduction and Model¶
The cooler releases excess heat from the heating network to maintain the optimal operating temperature for the anaerobic digester.
The cooler is implemented as a black box model, as its internal workings are not considered critical and are too complex to model in detail. The heat release of the cooler depends on the heat surplus \(\dot Q_{heat}\) of the heating network. The following cases are assumed:
-
High heat surplus (\(\dot Q_{heat} \ge \dot Q_{heat,max}\)): Cooler is fully utilized (\(k_{load} = 1\))
-
Partial heat surplus (\(0 \lt \dot Q_{heat} \lt \dot Q_{heat,max}\)): Cooler is partially utilized (\(0 \lt k_{load} \lt 1\))
-
No heat surplus (\(\dot Q_{heat} = 0\)): Cooler is not utilized (\(k_{load} = 0\))
Equations¶
Heat release¶
\[ \dot Q_{heat} = k_{load} \cdot \dot Q_{heat,max} \]
| Symbol | Description | Unit |
|---|---|---|
| \(\dot Q_{heat}\) | Heat release of the cooler | kW |
| \(k_{load}\) | Utilization rate of the cooler | - |
| \(\dot Q_{heat,max}\) | Maximum heat uptake power | kW |
Source code documentation¶
mod cooler
mod cooler_init