Re: [Cerowrt-devel] solar wifi ap designs?

[Christopher Robin <pheoni@gmail.com>]

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On Tue, Jun 13, 2017 at 8:24 AM Christopher Robin <pheoni@gmail.com> wrote:

>
> On Tue, Jun 13, 2017 at 7:52 AM Richard Smith <smithbone@gmail.com> wrote:
>
>> On 06/09/2017 10:02 AM, Dave Taht wrote:
>>
>> > My use case used to be covering hundreds of km in the Nicaraguan
>> > jungle. The prototype for that covers a mere 110 acres in the los
>> > gatos hills, trying to get stuff deep into ravines and so on.
>>
>> Accounting for wost case is always what amplifies the requirements of an
>> off-grid system.
>>
>> NASA Surface meteorology and Solar Energy claims that for Los Gatos
>> December is the lowest output.  Given a split-the-middle tilt alignment
>> of 37 degrees it will receive average full-sun net of 3.5 hours.
>
>
Dave: With these being tree mounted, how likely is full-sun? I'm not
familiar with the tree type/density. Are you're looking to avoid having
separated solar panels?

Richard: I would presume these calculations are all for "open field"
conditions?

If the panels are under a tree canopy, a lower attack angle may be better
to better utilize morning/evening sun. A higher one may be necessary to get
a useful charge during peak daylight. I've seen some pretty impressive
calculators to work out best guesses for field testing.

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