Posted by Duane C. Johnson on September 7, 2006, 3:21 pm
> The tape would not stand up to the heat, mine gets
> as hot as 233F when fan is not running.
You could use Aluminum foil tape.
This comes in roles just like standard duct tape.
It is especially useful in high temperature
> Forget about the pop cans and use 3in aluminum dryer
> vent tube. I have built 7 panels and have orders for
> 5 more. Mine are 4x8ft and put out over 7000btus on
> clear day in winter. Cansolair puts out 4200btus and
> Maxair puts out 5500 btus. I have no plans but can
> tell you what materials to use. Wayne
That doesn't seem like very much energy per day.
Maybe you meant 7000btus/hr?
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Posted by schooner on September 7, 2006, 3:25 pm
Yes that is the calculated btus per hour, not for the entire day.
I think that was the peak reading on a clear day at noon.
(I have one of Wayne's units at my house)
Posted by schooner on September 7, 2006, 3:38 pm
Here are a couple pics of Wayne's to give you an idea of the aluminum
ducting use for the collector tubes:
Posted by Solar Flare on September 8, 2006, 12:26 am
Are the tube runners in parallel or hooked in a series configuration?
Would slight gaps and a reflective backplane help efficiency?
I assume the whole pipe grid is painted black then?
Posted by waynel on September 8, 2006, 1:20 am
The tubes are run parallel, with heat box top and bottem, about 10 1/2
wide. Tubes are tight together. I use 14 tubes, painted black with
solar paint which gives more heat than regular heat paint. i ballance
my air flow up each tube to get even airflow up each tube, Cansolair
does not do this, so some of their tubes may have dead air in them, but
Im just gessing. I put air in at bottem and take it out of bottem so
heat goes in basement, out the top would be better but i dont want to
cut holes in my wall. Wayne
Solar Flare wrote: