I agree. Wind turbines really only produce about 50% of what they claim
(even at full wind speed). You will need 4 or 6 of that size wind
turbine to keep things running.
We had a site that was on a 9500ft mountaintop that showed a 15mph wind
average (over the entire year). We put up two 400 watt turbines and had
10 or 12 batteries (100ah). We only had 5 radios total (trango) and a
small 5 port 12v switch. The site would stay up for about 3-4 days
before we had to go start the generator. I think our total draw was
under 80 watts for everything.
You need to take a look at the Bergey wind turbines. They are
expensive, but they work really well. However, you can NOT mount them
on the top of a Rohn type tower... their mounting pipe has to be exact,
and if it's off by even 1/8", the whole thing will eventually vibrate
itself apart. Spend the extra $500 and buy their recommended mounting
tower system.
Travis
Microserv
JohnnyO wrote:
Cameron - unless you have CONSTANT wind, you are going to be seriously
underpowered.
JohnnyO
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Monday, March 17, 2008 6:22 PM
Subject: Re: [WISPA] Off Grid System Design Comments.
We are installing a new tower very soon (in the next couple weeks) that
will be run completely off Wind power with a 400-watt wind turbine. Of
course we will have 6 105 amp hour batteries. Our draw at one of our
popular sites is under 375 watts. This using a PC-Based MikroTik/ HP
Procurve 2524, 6 Alvarion B NET Backhauls, 2 Alvarion VL-AU's, 1 Trango
900 Sector.
We switched some hardware in the MikroTik routers mostly the newer low
powered AMD cpu's and that made a hugh difference and going from the HP
procurve 2424m to a 2524 which cut the wattage from 90 watts to about 25
watts. The Alvarion Units use about 200 watts total and the trango is like
13 watts or so, (been a while since I checked them). The mikrotik router
is uing 60-75 watts. All in all, not to shabby as far as power
consumption.
-Cameron
I wanted to get input from the WISPA list about a complete design for a
off
grid base station design base on a dual and quad radio system. We have
been
looking into this and have come up with a design using both wind and
solar
power that will keep a unit up and running 24/7/365. The idea is to have
a
complete package design so the base stations can be installed anywhere,
but
in order to keep the costs low it would be base on a max 48Watt design.
Questions:
1. Is this something WISP would want in the USA, and would find useful?
2. Would you like this in a single package or parts (where a package
would
have a 1 year warrantee and parts would not)
3. What are you finding the power needs are at a typical WPOP?
4. Other Comments?
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