Talk of The Villages Florida - View Single Post - solar attic fans
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Old 08-01-2019, 09:00 AM
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Quote:
Originally Posted by Toymeister View Post
How does this apply to solar?

First, it runs six months that you don't need it.

Second, solar panels which operate the fan, 100% speed (air movement) at 100% Sun but less than 80%at 80% sun or any other sunlight percentage/air movement ratio. So as the peak solar generation hours pass you need your fan but it isn't operating at 100%

Third. solar fans are more expensive

Fourth. Electric fans are cheap to operate

Fitth, Solar fans inflate how much air the move. Think about it solar fan firms claim that a solar fan driven by 20 watts moves as much of more than the most efficient electric fan at five times the wattage.
This is something I never considered. The solar fan will run during the cooler weather because there's no way to stop it.