BLDC Fans | Technology | Normal fans vs BLDC Fans!



When you talk of power savings, the first appliances that people try to curtail the use of are the ACs and refrigerators. However, do you know that your ceiling fan can consume more power than the fridge?

The regular ceiling fans are the second highest power consumer after the AC. However, you can reduce the electricity consumption of the ceiling fans by switching over to the BEE 5-star rated ceiling fans.

Going one step further and using the fans with the BLDC motors can help you conserve more power than the regular fans.

What are BLDC motors? How are they useful?

BLDC stands for Brushless DC motors. The BLDC motor is a synchronous motor powered by a DC electric source. It uses an integrated inverter power supply to produce an electrical signal to drive the motor.

There are two types of motors, the Brushed Motors, and the Brushless Motors. The Brushless Motor is a recent invention whereas the Brushed Motor is in existence for over a century. 

The advantages the Brushless motor has over the traditional Brushed motor are as follows.

  • High torque to weight ratio
  • More torque per watt
  • Enhanced reliability
  • Reduction in noise
  • Longer lifespan

The housing supports the windings in the BLDC motor. It explains why you can cool the motor by conduction. It does not require any airflow for the internal cooling thereby implying that the motor parts have full protection from dirt and other foreign matter. The Super-Efficient fans of today use these BLDC motors instead of the traditional ones.

A BLDC motor

Atomberg Technologies used these BLDC motors to manufacture the Gorilla Fans, the Super-Efficient fans. These motors help to reduce your electricity consumption by an average of 65% per month.

Normal Fans vs. BLDC Fans

This table should help you understand the difference between the traditional fans and the ones with the BLDC motors.

The speed of the FanBLDC Motor FansTraditional Ceiling Fans
16 Watts16 Watts
210 Watts27 Watts
314 Watts45 Watts
419 Watts55 Watts
528 Watts75 Watts

Thus you can see that the BLDC motor fans consume less power as compared to the traditional ceiling fans. We shall now translate these power savings in absolute terms to understand how the BLDC fans can save you money in the long run.

The fans run for about 15 hours a day on an average. With this assumption let us compare the economics of the regular fans and the BLDC motor fans.

 Regular FanBLDC Motor Fan
Approximate Cost₹ 1600₹ 3300
Consumption of power75 Watts28 Watts
Hourly Consumption0.075 units0.028 units
Daily Consumption1.125 units0.42 units
Yearly Consumption410.625 units153.30 units
Costs (₹ 6 per unit)₹ 2463.75₹ 919.80

This table shows that you recover the difference in the cost of the two fans within two years (within the first 15 months).

Other than the savings in consumption of electricity, you have additional benefits to the BLDC Motor fans.

These fans come with a remote control unit thereby allowing you to switch on and off the fans easily.

These BLDC motor fans come with a Timer and Sleep mode that will enable you to set a specific time limit (number of hours) while sleeping.

The technology reduces the speed of the fan gradually after the set time. It enables you to save more electricity. You can see the amount of power it consumes at low speeds. You do not have to get up at night to control the regulators.

Thus, we have seen that the BLDC motor fans are extremely energy efficient.

Sources: Wikipedia, Atomberg, renesas

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