User Manual

12
3.3.4 Weighted processes
Advantages:
– Minimize energy costs
– Reduce energy consumption
– Reduce CO
2
emissions
Relative weightings are used to optimize ERC. They result from the energy
provisioning processes for heating, cooling, humidification, and dehumidification.
The weighting factors can be used to optimize:
– Energy costs
– Energy consumption
– CO
2
emissions
Example: Energy costs
Energy recovery optimizes energy costs by preconditioning outside air. To do this,
the supply air controller's (Figure 3-3) demand signals are weighted by the specific
costs of the corresponding processes (Table 3-6) and energy recovery is
controlled.
Process Specific costs Relative weighting
Heating 0.09 € 1
Cooling 0.16 € 2
Humidification 0.08 € 1
Dehumidification 0.23 € 3
Table 3-6
Example for specific costs and relative weighting.
Specific costs are in € relative to a 1K temperature difference and a one-hour operating period.