That is a good point, shade moves. So the shield will have to be big and maybe
have vertical features. I did shades. Something convinced me they were not
worth the effort.
Sent from my iPhone
> On Jul 9, 2021, at 8:16 PM, Bill Prince <part15...@gmail.com> wrote:
>
>
> Those are options. For sure, black will both absorb more and radiate more.
> The question is if you can keep it shaded. If not, then white is the choice.
>
> In a perfect world, you would paint it chameleon. White in the sun, and black
> in the shade/dark.
>
> --
> bp
> part15sbs{at}gmail{dot}com
>
>
>> On Fri, Jul 9, 2021 at 6:47 PM Chuck McCown via AF <af@af.afmug.com> wrote:
>> Someone ought to test that.
>>
>> Sent from my iPhone
>>
>>>> On Jul 9, 2021, at 7:40 PM, Steve Jones <thatoneguyst...@gmail.com> wrote:
>>>>
>>>
>>> I could have sworn it was afmug sourced, but somewhere along the line I
>>> picked up that a shaded enclosure will actually perform better if it is a
>>> dark color. The whites and reflective colors are better at reflecting
>>> energy off of them, but not at dissipating it, dark colors shed heat
>>> better. In a shaded environment reflectivity is moot.
>>>
>>>
>>>> On Fri, Jul 9, 2021, 11:09 AM Chuck McCown via AF <af@af.afmug.com> wrote:
>>>> My tests had very little live load. I think only 100 watts so that is
>>>> probably the major difference.
>>>> We just use a color called satellite white. I don’t think it matters
>>>> much.
>>>>
>>>> From: castarritt
>>>> Sent: Friday, July 9, 2021 9:26 AM
>>>> To: AnimalFarm Microwave Users Group
>>>> Subject: Re: [AFMUG] Solar and shade for AE Fiber Cabinet
>>>>
>>>> Chuck, is there a specific paint you used to shield against solar
>>>> radiation? I rolled a gallon of white elastomeric roof coating from home
>>>> depot onto one of our DDB boxes, and while it did drop the temp slightly,
>>>> the results weren't that impressive. I think the issue with our test is
>>>> we chose a site that has ~1.2kW of power draw, so most of the heat was
>>>> likely from the equipment in the box rather than direct sunlight.
>>>>
>>>> On Fri, Jul 2, 2021 at 1:21 PM Chuck McCown via AF <af@af.afmug.com> wrote:
>>>>> 20+ years ago, I set up 4 identical outdoor enclosures. Temp telemetry.
>>>>> Some live load, don’t remember the details. They were about 24” cubes.
>>>>> All started out as gray. Tried sun shields, exterior insulation, vents,
>>>>> fans, peltier cooling modules. Silver paint, white paint. The
>>>>> overwhelming #1 thing that lowered temps was the satellite white paint.
>>>>> By a long stretch. Then filtered powered vents. Silver paint was worse
>>>>> than gray. I wonder if the railroad still used silver. Sun shades did
>>>>> little to help if the box was satellite white. Interior styrofoam
>>>>> insulation helped a bit, not much, but was cheap and easy to add to the
>>>>> white paint.
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>>> On Jul 2, 2021, at 11:39 AM, Sterling Jacobson <sterl...@avative.net>
>>>>>> wrote:
>>>>>>
>>>>>>
>>>>>> Super hot out here in Utah.
>>>>>>
>>>>>>
>>>>>>
>>>>>> My fiber cabinets running Active switches are getting harder to maintain
>>>>>> and AC units on the side of the cabinets are starting to fail faster.
>>>>>>
>>>>>>
>>>>>>
>>>>>> I’ve had the thought of shading them with a permanent four post
>>>>>> structure and a reflective white painted cover to shade them from the
>>>>>> southern sun exposure.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Then I thought, well, maybe it might be interesting to “shade” the
>>>>>> cabinet with solar panels as well.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Is anyone doing this?
>>>>>>
>>>>>>
>>>>>>
>>>>>> The AE cabinets all have Alpha FXM 15 or 20A units running the UPS to a
>>>>>> string of four 12v AGM batteries.
>>>>>>
>>>>>>
>>>>>>
>>>>>> I do have limited rack space in some of these available since the
>>>>>> batteries sit in a slide out section below.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Haven’t done solar in like a decade since I had remote WISP type sites.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Is this doable to offset power costs and also get the temp down for the
>>>>>> cabinet?
>>>>>>
>>>>>>
>>>>>>
>>>>>> Or is it just a huge time suck and money pit for no real return?
>>>>>>
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