Energy impact estimate for a given ΔP
Power and energy per year from your ΔP — a linear estimate
Energy impact of a given ΔP
An estimate of planned cost from a known ΔP — not a separator-efficiency calculation.
Additional power — Вт
Energy per year — кВт·ч/год
Cost estimate (at your tariff) —
Enter Q, ΔP, hours and η. Worked example (strictly educational): Q=3600, ΔP=100, η=0.5, h=2000 → P≈200 W, E≈400 kWh/year.
## Method
```text
Q_m3s = Q / 3600
P ≈ Q_m3s × ΔP / η [W]
E = P × h / 1000 [kWh/year]
costs (optional) = E × your_tariff
```
η is the total fan efficiency including the drive at your operating point. The tariff and η are only your input: without them the power and cost calculation is not performed (η = 1 as a "hidden default" is not allowed).
## Worked example
Q = 3600 m³/h, ΔP = 100 Pa, η = 0.5, h = 2000 h/year → P ≈ 200 W, E ≈ 400 kWh/year. A strictly training example, not a characteristic of an assembly.
## Limitations
- A linear simplified estimate under conditionally constant Q and η.
- It ignores the shift of the fan operating point, frequency control, fouling and the network duty.
- This is a planning estimate, not an electricity bill.