At 9500ft the air is pretty thin and you'll get maximum about 70% the rated output at comparable wind speeds. The curve is probably based on sea level air density. The plus side is that you may be in the clouds part of the time and enjoy some air laden with moisture.
-- Travis Johnson wrote: > 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? >>>> >>>> >>>> >>>> >>>> >>>> -------------------------------------------------------------------------------- >>>> WISPA Wants You! Join today! >>>> http://signup.wispa.org/ >>>> -------------------------------------------------------------------------------- >>>> >>>> WISPA Wireless List: wireless@wispa.org >>>> >>>> Subscribe/Unsubscribe: >>>> http://lists.wispa.org/mailman/listinfo/wireless >>>> >>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>> >>>> >>> -------------------------------------------------------------------------------- >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> -------------------------------------------------------------------------------- >>> >>> WISPA Wireless List: wireless@wispa.org >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> >> >> > ------------------------------------------------------------------------ > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
