Top 10 comparisions : BLDC vs conventional fan

BLDC vs conventional fan

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BLDC motors are the hottest trend in the fan manufacturing industry right now. Replacing the old and inefficient induction motors, BLDC motors are bringing in the new generation of energy efficient ceiling fans. The ceiling fans online are affordable and won’t burn a hole in your pocket or electricity bill. The BLDC technology holds high promises of combating the rising energy crisis in India.

Let us look at some points of comparisons between BLDC ceiling fans and conventional ceiling fans.

  1. Motor

Conventional ceiling fans have induction motors consisting of two parts – the rotor and the stator. The coil windings on the stator become energized when the alternating current (AC) passes through it, producing a magnetic field. This magnetic field causes the rotor coils to rotate. Contrary to this, a BLDC motor consists of three parts – a stator, a rotor, and electronics. Also, it uses permanent magnets in the rotor instead of electromagnets.

  1. Energy consumption

Conventional ceiling fans with AC or induction motors are energy-hogging devices that consume enormous amounts of power, resulting in high electricity bills. Moreover, the fans which use resistance based regulators for speed control, generate heat, thereby causing huge energy loss. BLDC fans use permanent magnets in the rotor that reduce the power consumption to a great extent. Since these fans use electronic commutator for increasing/decreasing the torque produced, there is no energy loss in the form of heat. BLDC fans can cut down your energy costs by almost 55-60% annually!

The table below shows the wattage consumption of BLDC ceiling fans and ordinary ceiling fans at varying speeds.

Speed (rpm) BLDC Fan (watt) Ordinary Fan (watt)
140 3.8 14
210 7.7 25
270 13.8 39
310 22.7 48
360 35.8 76
  1. Speed

As mentioned above, conventional fans use capacitor or resistance based regulators to control the RPM. This not only causes heat loss but also poses great inconvenience during voltage fluctuations as it is not possible to maintain constant RPM on alternating current. BLDC motors, on the other hand, can perform smoothly and consistently even at times of voltage fluctuations. Also, BLDC fans have higher responsiveness than traditional fans due to their low rotor inertia which allows it to accelerate, decelerate, and reverse direction seamlessly. BLDC motors have the highest running torque per cubic inch compared to other motors and they can operate at high speeds, even above 10,000 rpm!

The table below shows the air flow (CFM) of BLDC ceiling fans and ordinary ceiling fans at varying speeds.

Speed (rpm) BLDC Fan (cfm) Ordinary Fan (cfm)
140 467 434
210 267 234
270 200 160
310 134 95
360 100 34
  1. Reliability

Since BLDC motors use electronic commutators devoid of any brushes, they are much more reliable and durable. BLDC ceiling fans do not get heated up after long-running hours; they do not become wobbly or noisy over time; they perform consistently. Hence, they boast of an extended and impressive lifespan, unlike conventional ceiling fans that become victims of significant wear and tear with time. Investing in a BLDC fan would thus, mean hardly any instances of replacement or repair issues.

  1. Remote control

Conventional fans do not have remote controls or smart modes. The speed control has to be done manually. BLDC ceiling fans come with smart remote controls loaded with advanced features like timer, sleep, and boost mode. These modes help the fan to perform optimally in different situations – with the timer, you can set a time for the fan to switch off automatically; the sleep mode causes the fan to perform at reduced a speed during the night when everyone is asleep; and the boost mode automatically scales up the speed of the fan for an enhanced cooling effect.

These comparisons show that BLDC ceiling fans have the edge over regular ceiling fans.  They are extremely energy efficient. Atomberg Technologies have developed India’s most energy efficient fans – the Gorilla ceiling fan. These fans are real money savers as they promise to reduce your energy consumption by as much as 65%!

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