> From: "David Roberson" <[email protected]> > Sent: Monday, April 15, 2013 7:10:00 PM
> Good point Eric. I saw a short video and the fan blade was tiny. > About the size of a large model plane prop. I would guess a couple > of watts, but it is difficult to determine. > > > We need good data to evaluate the Yildiz device. See http://www.mail-archive.com/[email protected]/msg78782.html -- at least 50W The estimate for the Delft demonstration was about 1/2 HP, with a four-bladed fan. (acceleration of air -- velocity * area)
