[RE-wrenches] Solar thermal covering

[Dave Angelini Offgrid Solar]

Ground mount collector with plywood over the panels you do not want to 
use.

Dave Angelini Offgrid Solar
"we go where powerlines don't"
    [1]https://offgridsolar1.com/ [2]  [1]
e-mail  offgridsolar at sti.net
text 209 813 0060

On 2025-06-15 7:47 pm, Jerry Shafer via RE-wrenches wrote:

> Wrenches, Jay,
> Yup had this same issue years ago and we used fire doors, like roll up 
> doors but lighter smaller and less expensive. But that was years ago.
> Fun times
> 
> On Sun, Jun 15, 2025, 7:35 PM Bradley Bassett via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote:
> One other thought, on some vacuum tube collectors, if I remember 
> correctly, you can simply remove some of the tubes.
> 
> Brad Bassett
> 
> On Sun, Jun 15, 2025 at 7:35 PM Bradley Bassett <bbassett2 at gmail.com> 
> wrote:
> When I found that my system was somewhat oversized, I plumbed in a 
> mixing valve and a heat dump radiator (a few Cu pipes) in the crawl 
> space to dump the heat. It's on the solar supply line and it works like 
> a charm. It actually adds a very modest amount of heat to the crawl 
> space, not enough to notice. It's going on 20 years without any issues, 
> probably because it's an anti-freeze system so no mineral buildup in 
> the mixing valve. I've also heard of using a fin radiator under the eve 
> for this instead of the crawl space. The crawl space was easier for me.
> 
> Brad Bassett
> 
> On Sun, Jun 15, 2025 at 5:02 PM david quattro via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote:
> There must be a variable mixing valve that is informed and controlled 
> by a thermocouple
> 
> On Sun, Jun 15, 2025 at 4:46 PM Jay via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote: Hi all
> 
> I've inherited an incorrectly sized solar thermal evacuated tube 
> system.
> It's too many tubes for the use most of the year.
> 
> Does anyone know of a design or product that can remotely cover them?
> I can find shade cloth of course that I can cover them but something 
> remote control would be better
> 
> Thx
> Jay
> 
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Links:
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[1] http://members.sti.net/offgridsolar/
[2] https://offgridsolar1.com/
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