Pls suggest BLDC Fan?

I need air conditioning even in this weather after reading all these bldc mess. These fans have been around for more than a decade now. Still so many confusions and problems. There's no one fan where users have agreed okay this is a good fan. Summer is just days away any I thought at least now i can finally replace the ac fans with bldcs.
 
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I tried most brands . Atomberg , crompton , superfan , GM , TVS etc . The fan I would recommend is V1 series of Superfan . The breeze is good even at the lowest setting on the remote . Rest of the fans just spin fast . Their supercool model is good as well , but at approx 8000 I would kill myself for buying a fan .
 
Would recommend Havells, or Polycab (checkout their reversible Bldc models) any day over atomberg.
Even Non'bldc fans is really good option depending on model to model.
Pointers to buy good fan
1. Service
2. Installation ease
3. Repairable (which bldc is not really)
4. Airflow
5. Noise
6. Purity of copper inside
7. Fan regulator compatibility
Overall polycab has both options bldc and ac and decent feedback. Rest is region dependant.
 
codwapeace said:
Incorrect.
www.tytorobotics.com

AC vs DC vs BLDC Motor Efficiency Comparison

DC motors are also known for their low efficiency, typically ranging from 50-80%. AC motors are known for their high efficiency, typically ranging from...
www.tytorobotics.com www.tytorobotics.com
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Well, my BLDC fan throws more air while sipping 6 watts of power than my traditional fans gulping down 50 watts. I have tested.

If motors running on AC were efficient, then all new 5-star appliances wouldn't be using BLDC motors.

Previously, I underestimated the power savings that came with BLDC motors. I have said that the extra price paid for a BLDC fan would never break even. Then I got myself a BLDC fan. And, I tested it. Then I ate my words on this very forum.
 
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lockhrt999 said:
Well, my BLDC fan throws more air while sipping 6 watts of power than my traditional fans gulping down 50 watts. I have tested.

If motors running on AC were efficient, then all new 5-star appliances wouldn't be using BLDC motors.

Previously, I underestimated the power savings that came with BLDC motors. I have said that the extra price paid for a BLDC fan would never break even. Then I got myself a BLDC fan. And, I tested it. Then I ate my words on this very forum.
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They are more efficient at lower speeds (or lower loads in motor parlance). That is all. They are almost the same efficiency at max speed. So, the lower powered BLDC fan is not "fan enough" at max speeds. You can easily see the flow difference in older fans and today's BLDC fans away from under the fan. BLDC fans have really poor flow off axis. I went and tested all brands. What is the point of saving a few watts if fan is not doing a good job?
The low flow off axis problem is there even at low speeds so it is completely useless from my point of view as we hardly sit just under the fan. I had to change all my BLDC fans to large 1400 mm regular fans to get good flow off axis. The best thing that one can do is to buy as large fans as possible and run them at lower speeds because they give good uniform airflow throughout the room.
 
codwapeace said:
They are more efficient at lower speeds (or lower loads in motor parlance). That is all. They are almost the same efficiency at max speed. So, the lower powered BLDC fan is not "fan enough" at max speeds.
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Bruhhh!

Let me quote myself when I was a denier:
Brush costs 50 rupee and any electrical repair shop will replace it for 100 rupee.

Emperor said:
So is it wise to buy BLDC Motor fan paying amount DOUBLE then regular DC Motor fan?
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No, you are never going to break it even if that's what you are asking.
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Quoting myself when I tested the actual efficiency with my own bare hands.
I eat my words. The savings these companies claimed 2-3x are misleading. In real world the savings are like 10x. We normally use fan on 1x speed and BLDC ceiling fan merely uses 6W whereas traditional ones take almost 60W (at 1x speed).

BLDC companies claim 3x efficiency at full 5x speed. Yeah, I agree, at full speed, BLDC (atomberg in my case) consumes 32 watts whereas traditional old fan is consuming 90 watts. 3x efficiency is there to show for marketing. But how many people use fan at 5x?

Moreover, I still find 1x speed of my atomberg (@ 6W) is too much windy. I'm thinking of adding a dimmer before the fan regulator to reduce that 1x even lower (it'll inside the board). lol
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A traditional fan with a motor running on AC will consume at least 30-60 W at 1x speed. That is more than what BLDC consumes at full speed.

The other issue you highlighted is real,
codwapeace said:
The low flow off axis problem is there even at low speeds so it is completely useless from my point of view as we hardly sit just under the fan.
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But it hardly has anything to do with motors being BLDC. It has to do poor fan design. I'm suffering from the same issue but not with my BLDC fan but with traditional fans and that's why I posted this in this thread:
lockhrt999 said:
Guys,
1. Which BLDC ceiling fan brand/models which are known to throw around the room? My last few purchases of ceiling fans were bad. I feel the air only if I stand right underneath them.
2. And, have configurable speeds. I'd like to have the first speed to set to very low. I have one Atomberg Renesa Alpha. Its first speed is still too fast.

I was looking to get one in 1400 mm size without a remote (I know these don't exist) and another in 1200 mm size with a remote.
Click to expand...
 
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