I have used a AIR-X for 4 years now. The blades are a composite plastic and the ice WILL NOT stick to them. I've been there when the pole supporting the generator had nearly an inch of ice on it and the antennas were all coated too thick to break off, and the genset blades were ice free.
Mark ++++++++++++++++++++++++++++++++ <insert witty tagline here> ----- Original Message ----- From: "Chuck McCown" <[EMAIL PROTECTED]> To: "WISPA General List" <[email protected]> Sent: Thursday, November 20, 2008 10:13 AM Subject: Re: [WISPA] Remote Powered Access Pont > Wind generators are good if you have plenty of wind and no ice. > Our problem has been that we need their power during the worst weather. > And that is when they fail. They wear out or get loaded with ice and tear > apart. > > ----- Original Message ----- > From: "Randy Cosby" <[EMAIL PROTECTED]> > To: "WISPA General List" <[email protected]> > Sent: Thursday, November 20, 2008 11:04 AM > Subject: Re: [WISPA] Remote Powered Access Pont > > >> Good point :) It's not too severe down here in So Utah. >> >> Randy >> >> >> Chuck McCown wrote: >>> They must not be subject to ice storms. >>> >>> ----- Original Message ----- >>> From: "Randy Cosby" <[EMAIL PROTECTED]> >>> To: "WISPA General List" <[email protected]> >>> Sent: Thursday, November 20, 2008 10:22 AM >>> Subject: Re: [WISPA] Remote Powered Access Pont >>> >>> >>> >>>> We recently visited a solar-powered site that had a supplementary >>>> wind-generation system. Seemed to work well for them to have wind >>>> power >>>> when the weather is bad, solar when it is good. Pretty windy place as >>>> well. >>>> >>>> Chuck McCown - 3 wrote: >>>> >>>>> Here is a note I posted several days ago on the Motorola list about >>>>> solar >>>>> powering. >>>>> >>>>> From: Chuck McCown [mailto:[EMAIL PROTECTED] >>>>> Sent: Friday, November 14, 2008 9:17 AM >>>>> To: Dave Crim >>>>> Subject: Re: solar >>>>> >>>>> >>>>> >>>>> Continuing on a bit, lets say you have 5 lousy days and one good sunny >>>>> day >>>>> followed by 5 more lousy days. That one sunny day needs to store >>>>> enough >>>>> to >>>>> charge the batts totally. 75 watts * 5 days * 24hours * 1.25 (batter >>>>> efficiency loss) + (75watts * 24 hours) current day = 13050 watt >>>>> hours. >>>>> >>>>> To make 13050 watt hours in one 10 hour day you go: >>>>> >>>>> 13050/.707*10=1845 watts. You need 1845 watts of panel to do this. >>>>> That >>>>> is >>>>> 24 times the load. >>>>> >>>>> So, my rule of thumb of 20 times the load is still a little shy of >>>>> being >>>>> conservative. >>>>> >>>>> >>>>> >>>>> The thing that saves you in a situation like this is a massive >>>>> battery. >>>>> A >>>>> one month battery with 20 X panels will never fail due to a lack of >>>>> sun >>>>> energy. >>>>> >>>>> A 2 week battery and 10X panels will fail now and then every single >>>>> winter. >>>>> Sometimes for several days at a time. >>>>> >>>>> ----- Original Message ----- >>>>> >>>>> From: Chuck McCown >>>>> >>>>> To: [EMAIL PROTECTED] >>>>> >>>>> Sent: Friday, November 14, 2008 9:09 AM >>>>> >>>>> Subject: solar >>>>> >>>>> >>>>> >>>>> Several thing you may not be including. >>>>> >>>>> Assuming this panel is somewhere in this neck of the woods, December >>>>> 21 >>>>> has 10 hours of time between runrise and sunset. >>>>> >>>>> But if you don't have tracking mounts (most don't) the amount of >>>>> energy >>>>> you get out of a panel follows the first half of a sine wave. >>>>> >>>>> To estimate that energy, you integrate the area under the curve. >>>>> That >>>>> will equal .707 of what you thought you were going to get. >>>>> >>>>> >>>>> >>>>> So, let's say you put up a 500 watt panel, your daily sunny output >>>>> will >>>>> be >>>>> an average of 353 watts. The sun shines for 10 hours solid and you >>>>> store >>>>> 3530 watt hours in your battery. Now your load is on during the >>>>> daytime, >>>>> so >>>>> if you have a 75 watt load, you are now able to make 278 watts. You >>>>> are >>>>> down to 2780 watt hours. You put in 2780 watt hours into a battery >>>>> and >>>>> you >>>>> get maybe 80% back out. So you have 2224 watt hour available (if you >>>>> drain >>>>> the batts which is not good for them). >>>>> >>>>> >>>>> >>>>> You have 14 hours of darkness and actually more like 16 hours before >>>>> the >>>>> panel starts making any useful amount of energy. 16*75=1200 watt >>>>> hours. >>>>> >>>>> But that next day is not sunny, there is frost and a light coating >>>>> of >>>>> snow. The whole works dies 16 hours later. About 9 pm. >>>>> >>>>> >>>>> >>>>> One other note, you only want to draw your batteries down no more >>>>> than >>>>> 10% >>>>> each night or they won't last long. That means a minimum of 12000 >>>>> watt >>>>> hours. If that is a 12 volt system, 1000 amp hours. If it is a 24 >>>>> volt >>>>> system, 500 amp hours. And that is a minimum because here we get a >>>>> week >>>>> with snow and ice and no sun easy, sometimes two weeks. >>>>> >>>>> >>>>> >>>>> You really need a generator, less load, or a whole bunch more batts >>>>> and >>>>> panels. >>>>> >>>>> >>>>> >>>>> -------------------------------------------------------------------------------- >>>>> WISPA Wants You! Join today! >>>>> http://signup.wispa.org/ >>>>> -------------------------------------------------------------------------------- >>>>> >>>>> WISPA Wireless List: [email protected] >>>>> >>>>> Subscribe/Unsubscribe: >>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>> >>>>> Archives: http://lists.wispa.org/pipermail/wireless/ >>>>> >>>>> >>>> -- >>>> Randy Cosby >>>> Vice President >>>> InfoWest, Inc >>>> >>>> office: 435-773-6071 >>>> >>>> >>>> >>>> >>>> -------------------------------------------------------------------------------- >>>> WISPA Wants You! Join today! >>>> http://signup.wispa.org/ >>>> -------------------------------------------------------------------------------- >>>> >>>> WISPA Wireless List: [email protected] >>>> >>>> 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: [email protected] >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >> >> -- >> Randy Cosby >> Vice President >> InfoWest, Inc >> >> office: 435-773-6071 >> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! 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