Eric,
I have a few 50W Propane TEGs I could sell you.
Let me know.
ryan
On 3/10/15 4:52 PM, Bill Prince wrote:
I would recommend (lacking any other information) that if you're going
to be running those things in a solar application that you want the
highest voltage you can. Probably a 48 volt system. For an AirFiber,
that is still going to be a constant 1 amp load. That's 1.2 KWH per day.
At 49 north, you won't have many hours to recover, even on a sunny
day. I would try to get a week's worth (Chuck would say 10 days
worth) in the 2 hours of sunlight you "might" get on the winter solstice.
Sooooo. That would be 1200 WH * 10 = 12,000 WH (aka 12 KWH). You need
to be able to generate 6KW per hour.
On my little scratch pad, that is going to be about 25 300 watt panels
(best to figure about 80% efficiency on your solar panels).
I shudder to think how much battery that is, and that is only one radio.
bp
<part15sbs{at}gmail{dot}com>
On 3/10/2015 4:41 PM, Bill Prince wrote:
Watts is watts.
If you're drawing (for example) 50 watts.
110 VAC at ~~ .45 amps is 50 watts
48 VDC at ~~ 1 amp is 50 watts
24VDC at ~~ 2 amps is 50 watts
Looking at power consumption in watts eliminates having to figure out
what the voltage is.
It does not deal with conversions though. The aforementioned 110VAC
will surely involve some conversion efficiencies (or lack thereof).
Not having any specific information, I figure at least 10% loss each
time you convert. So if you're powering an AF24 on 110VAC, you can
rule of thumb estimate that the real amperage (on the 110 VAC is
going to be closer to .5 amps (instead of .45 mentioned above).
bp
<part15sbs{at}gmail{dot}com>
On 3/10/2015 4:23 PM, [email protected] wrote:
Looking at the mimosa b5c, AF5X and other new low cost 256QAM radios
for an off grid solar application.
Will be used with the tycon dc-dc poet injectors.
Manufacturers, do you gave any real world figures for constant W
load? Are the figures for wattage in your datasheets as measured on
the AC or DC side of the POE injectors included with your radios?
At latitudes above 49 north, we need to calculate very precise
kilowatt hour per month figures to survive reliably through December
and January.
--
D. Ryan Spott | Iron Goat Networks, llc
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PO Box 1232 / 603 W. Stevens Sultan, WA 98284
360-799-0552 | gtalk: [email protected]
