Cum se calculează Flywheel Energy
Ce este Flywheel Energy?
Flywheel energy storage uses rotational inertia to store and release kinetic energy. It's used for power smoothing and peak shaving.
Formulă
Power = dE/dt (rate of energy change)
Ghid pas cu pas
- 1Calculate: E = 0.5 × I × ω² where I is moment of inertia, ω is angular velocity
- 2Energy stored = change in kinetic energy
- 3Power = dE/dt (rate of energy change)
Exemple rezolvate
Intrare
Flywheel I=100 kg·m², ω=500 rad/s
Rezultat
E = 0.5 × 100 × 500² ≈ 12.5 MJ energy stored
Significant storage capacity
Greșeli frecvente de evitat
- ✕Neglecting bearings friction losses
- ✕Over-sizing flywheel (excessive cost and weight)
Întrebări frecvente
Why use flywheels over batteries?
Flywheels handle high power (charge/discharge rate); good for short-duration storage.
What limits flywheel speed?
Material strength; excessive speed causes material failure. Typically limited to 20-60% ultimate stress.
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