VFD Power Savings Calculator

Calculate power savings with Variable Frequency Drive (VFD) using affinity laws: P ∝ N³. Reducing fan/pump speed by 20% saves 49% power. Payback period from annual energy savings vs VFD investment.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
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How It Works

Calculate power savings with Variable Frequency Drive (VFD) using affinity laws: P ∝ N³. Reducing fan/pump speed by 20% saves 49% power. Payback period from annual energy savings vs VFD investment

Each component has a specific meaning:

  • Affinity laws: P ∝ N³ — The affinity laws: p ∝ n³ recorded for the patient or scenario being assessed.

Note: Interpret the vfd savings result against the clinical thresholds and context described above.

How to Use

Enter the affinity laws: P ∝ N³ for the patient or scenario you are assessing. Calculate power savings with Variable Frequency Drive (VFD) using affinity laws: P ∝ N³. Reducing fan/pump speed by 20% saves 49% power. Payback period from annual energy savings vs VFD investment. Use the vfd savings result to inform your clinical assessment.

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Frequently Asked Questions