Heat redistribution/timer [RE-wrenches]

[Travis Creswell, Ozark Solar]

Gary,

Most often, air handler motors are 120.  Perhaps you look at changing the
240 motor to a 120.  The new motor is cheaper than a T-240 and you could get
a chance to a more efficient motor while you are it.  Also why are you
looking at using a timer instead of a thermostat or even a simple snap disk
switch?

Why does he want to run it with his system?  To save money?  He could save
more money by running his fridge and lighting with solar year round or
perhaps some other loads that you are could set up easier than this air
handler fan.

I'm not trying to head you off on a different road just offering some
thoughts.  The customer might not go for this either but Northern Tool and
Equipment and many others offer the little electronic cooling fans that move
a lot of air and many of them are available in 12 volts.  They could be
mounted in the corners of the doors.

Good luck!

Travis Creswell
Ozark Solar


----------
>From: "Gary Higbee, Solutions from the Land" <ghigbee at efn.org>
>To: RE-wrenches <RE-wrenches at topica.com>
>Subject: Heat redistribution/timer [RE-wrenches]
>Date: Wed, Feb 21, 2001, 3:07 PM
>

>Hi Wrenches,
>
>I'm working with a client who would like to be able to run his 1/3hp
>240-volt circulating fan. While I know that these things use a lot of power
>he is also grid-tied, and wants to be able to redistribute heat from his
>woodstove (in a high-ceiling room)into other rooms in the house. I'll likely
>drop in a T-240 for this. What I'd like to be able to do, though, is have a
>timer that would make the fan run for something like 5-10 minutes each hour.
>
>So what I'd like is a timer (preferably battery-operated, 12-volt would be
>OK, guess I could use a gel-cell?) that controls a relay (on the T-240
>primary), which we can program for so many minutes per hour. I used to have
>a sprinkler timer with a "new lawn" cycle and pump start switch, which I
>think ran every hour. I can't seem to find such a thing now. Anyone have any
>suggestion for a timer that will control frequent periodic events? I know I
>could dust off the electronics and come up with a circuit, but I'd vastly
>prefer an off-the-shelf solution.
>
>Thanks!
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>     Gary Higbee  (ghigbee at efn.org)
>             (541)607-1818
>     Solutions from the Land--solar,
>  wind, and hydro site analysis, design,
>       and installation assistance
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
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 michael.welch at homepower.com

____________________________________________________________
T O P I C A  -- Learn More. Surf Less. 
Newsletters, Tips and Discussions on Topics You Choose.
http://www.topica.com/partner/tag01