Network — Ventilation-on-Demand Saving
Ventilation-on-Demand Saving for ventilation network design and surveying.
VOD's pitch is one line of algebra: half the airflow costs an eighth of the power. Nine idle hours a day at 50% flow takes ~33% off the fan bill — before the heating and cooling knock-ons. The constraint is regulatory minimums and gas trends; the savings are the cube law's gift.
Formula
Note: Mine ventilation is statutory and life-safety territory: airflow quantities, gas limits and re-entry times must be set by the registered ventilation engineer/manager under your jurisdiction's mining regulations — this calculator is a planning and training aid.
Ventilation-on-Demand Saving for ventilation network design and surveying. A free mine ventilation & air quality tool — no sign-up, no upload, instant results in your browser.
About Network — Ventilation-on-Demand Saving
Network — Ventilation-on-Demand Saving computes the governing relationship P_idle = P×(Q_frac)³ — the cube law monetized per idle hour live as you type. VOD's pitch is one line of algebra: half the airflow costs an eighth of the power. Nine idle hours a day at 50% flow takes ~33% off the fan bill — before the heating and cooling knock-ons. The constraint is regulatory minimums and gas trends; the savings are the cube law's gift. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Network — Ventilation-on-Demand Saving
- 1Enter your values — Fan power at full duty, Airflow fraction when idle, Idle hours per day, Tariff (sensible defaults are pre-filled).
- 2Read the live results: Annual saving, Energy reduction.
- 3Check the "with your numbers" line to see P_idle = P×(Q_frac)³ — the cube law monetized per idle hour substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Network — Ventilation-on-Demand Saving?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula P_idle = P×(Q_frac)³ — the cube law monetized per idle hour with authoritative sources cited on the page (McPherson, M.J., Subsurface Ventilation and Environmental Engineering; Hartman et al., Mine Ventilation and Air Conditioning, 3rd ed.)
- ✓VOD's pitch is one line of algebra: half the airflow costs an eighth of the power.
- ✓Niche-specific defaults give a meaningful worked answer the moment the page loads
Frequently asked questions
What formula does the network — ventilation-on-demand saving use?+
It evaluates P_idle = P×(Q_frac)³ — the cube law monetized per idle hour, exactly as published. Sources: McPherson, M.J., Subsurface Ventilation and Environmental Engineering; Hartman et al., Mine Ventilation and Air Conditioning, 3rd ed.. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
VOD's pitch is one line of algebra: half the airflow costs an eighth of the power. Mine ventilation is statutory and life-safety territory: airflow quantities, gas limits and re-entry times must be set by the registered ventilation engineer/manager under your jurisdiction's mining regulations — this calculator is a planning and training aid.
When is this calculator the right tool for the job?+
Ventilation-on-Demand Saving for ventilation network design and surveying. A free mine ventilation & air quality tool. Nine idle hours a day at 50% flow takes ~33% off the fan bill — before the heating and cooling knock-ons. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Do I need to install anything or create an account?+
No. The tool is pure client-side JavaScript: open the page and it works, offline once loaded, with no account, no quota and no data leaving your device.
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