Dc vs ac efficiency

I've been reading on dc ceiling fans claims of 70% more efficient than ac fans with 300+ cfms per watt. 20 watts on high at 6600 cfm. Has anyone tried one of those fans?
2kw array 6 345 q cells make sky blue 60 cc
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
Comments
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister ,
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
http://members.sti.net/offgridsolar/
E-mail [email protected]
Rick
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
http://www.backwoodssolar.com/products/fans-large-small/40inch-12-volt-ceiling-fan-white
It doesn't give CFM, but it's pretty quiet and moves enough air to do the job without blowing the covers off the bed!
AFAIK, it's a DC motor so no conversions.
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
Here's the link:
https://www.homedepot.com/p/Home-Decorators-Collection-15-in-Brown-Ceiling-Fan-with-Light-Kit-and-Remote-Control-51558/301909748
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
I am available for custom hardware/firmware development
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
Thom
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
I am available for custom hardware/firmware development
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
I am available for custom hardware/firmware development
6 230ah GC @36 volts
18 amp accusense charger. 3650 champion
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
I am available for custom hardware/firmware development