According to jackson :
"Lesley" wrote in message
ups.com...
wrote:
I've seen these fans and Yes, they do work, but they really don't move
much air at all, I'd guess they move 1/20th the air volume of a
"normal" fan. A $15 box fan pointing at your stove would do a much
better job of circulating air. But again, they don't need any
electricity.
If your goal is to move a little air when there is no electricity, then
this fan will do that. If your goal is to circulate the air in a room,
this will not help much.
I figured as much. When something sounds too good to be true, it
usually is. Anyway, I guess I'll just cough up the $300+ to have the
blower unit installed. I don't want to use a regular "box" fan because
it wouldn't complement the decor. That's why it was the blower unit or
the heat-powered fan---those were my 2 choices.
What does work and on low power consumption is those little high CFM 12V
computer fans....
"high CFM" in terms of computer fans is, like, 15-25 CFM. Which isn't
going to do anything useful compared to a proper blower of at least
100CFM and preferably more.
I have some 8" "muffin" fans that'd work pushing 200CFM. But, that's
a lot of amps at 12V. [They're actually 120VAC]. And they're quite
loud (off large scale computer-room gear where it doesn't matter
much).
For the most part, heating anything larger than a single smallish room,
a decently sized 120VAC blower running off an inverter would be the
most cost-effective solution.
[We can easily heat our entire house - two story, 2200 square feet,
"open concept", with a single woodstove and an inverter powering the
woodstove's blower. I think the blower is around 200CFM. We still
have the problem of too much heat in the upper floor tho - need another
fan to control that. In a closed concept floorplan, it'd be much more
difficult.]
--
Chris Lewis,
Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.