These “Vari-Cyclone” ceiling fans from FanWorks are perhaps the most efficient ceiling fans available. The fans utilize what Fanworks calls “Gossamer Wind” blade design technology, which is said to deliver 40% more air flow without any increase in power use. They also run on DC power, which also adds to their efficiency when off-grid power is used.
On the advantages of running under DC power, Fanworks says:
The average AC-powered ceiling fan draws between 0.5 and 1 amp. When an inverter is used to run the AC ceiling fan, you are pulling 5 to 10 amps DC to run the fan. This does not include the power consumed by the inverter to produce the AC power required by the ceiling fan.
The Vari-Cyclone, DC-powered ceiling fan, runs directly from your battery bank, no inverter required, and draws only 0.5 amp @ 12 VDC, making the Vari-Cyclone 10 times more energy efficient than an AC-powered ceiling fan.
Here are some stats:
Power Consumption: (with 3-blade configuration):
At 12 volt: 60 rpm, 7 watts, 2500 cfm.
At 24 volt: 120 rpm, 27 watts, 3400 cfm.
You can see a very in-depth analysis of the performance of these fans here.
Homepage: FanWorks
Available from: Survival Unlimited ($175-$195)
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{ 4 comments… read them below or add one }
a bit pricey for a fan dont you think? conventional fans would cost less than that and unless there is a big benefit jumping off the promo page, this might be a hard sell…
Please let us know the prices for 500 Nos, to be used with Solar PV in India
Let us know the bulk price for the fan
Subhais:
Your post never made it to our main site. Not sure why. I’m happy to help you with pricing, if you still need for India. Nextek Fanworks has happy clients all over the globe, 14 countries so far!
My direct email ID is mike.kastler@nextekpower.com