It's quite simple to set up your own panel setup for what you require. You first need to calculate your daily loads and duty cycles of your equipment. ie. your sensor circuitry takes say, for example, 2.5 amps when operating and switches on for 5 periods of 30 minutes each. The total of the operating amperage required + the duty cycle amperages would be your daily load(s)
You choose a true deep discharge battery that can handle your daily load(s) + 30% is normal. Pick a battery that has sufficient amp-hour capacity for what you need to power. You then size your panel to give you at least a C30 rate of charge to ensure the battery gets recharged properly. You have to allow for wire losses if you are running lines for some distances and 3% - 5% percent should be the maximum allowable depending on the wire guage that you require. You were stating "milliamps, so if that is the case and you are only sending low voltage/milli/amperage pulses somewhere, the battery and PV panel can be sized much smaller. Here are some calculators that can help you size many different systems. regards tallex Calculators http://www.alternate-energy.net/calcs06b.html Get your daily alternative energy news Alternate Energy Resource Network 1000+ news sources-resources updated daily http://www.alternate-energy.net Next_Generation_Grid http://tech.groups.yahoo.com/group/next_generation_grid/ Alternative_Energy_Politics http://tech.groups.yahoo.com/group/Alternative_Energy_Politics Tomorrow-energy http://tech.groups.yahoo.com/group/tomorrow-energy Earth_Rescue_International http://groups.yahoo.com/group/Earth_Rescue_International > -------Original Message------- > From: Joe Street <[EMAIL PROTECTED]> > Subject: Re: [Biofuel] [biofuel] Solar Cell Needed to power up remote water > pumps > Sent: 29 Jan '07 16:24 > > Why not just build a system to meet the specs? > > J > > Phillip Wolfe wrote: > > >Readers - I believe my inquiry qualifies for your > >biofuel list as I need info on solar cells. > > > >Water Conservation Project Needs Solar Cells - If you > >know of any small solar cell with battery storage > >please send. I'm working on a project to collect data > >from very remote water meters for water conservation > >purposes. I plan to collect data from 3000 gravity > >driven water meters over a fixed wireless network. The > >area is too remote to connect with standard electric > >utility service and ethernet; thus the fixed wireless > >netwoork. Most importantly I need some type of solar > >cell with battery storage. The solar cell needs just > >enough voltage to push enough millamp current to push > >data through a sensor to a remote terminal unit that > >collects data and sends over my fixed wireless > >network. So in order to do this I need to power up > >the remote meters with some type of solar cell and > >battery setup. If you know or have info on any small > >sized solar cell with battery storage please send. > >The water meters are passive and simply collecting GPM > >(gallons per minute) information. I need to retrieve > >that information for water conservation purposes. > > > > > > > > > > >____________________________________________________________________________________ > >Don't pick lemons. > >See all the new 2007 cars at Yahoo! Autos. > >http://autos.yahoo.com/new_cars.html > > > >_______________________________________________ > >Biofuel mailing list > >Biofuel@sustainablelists.org > >http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > > >Biofuel at Journey to Forever: > >http://journeytoforever.org/biofuel.html > > > >Search the combined Biofuel and Biofuels-biz list archives (50,000 > messages): > >http://www.mail-archive.com/biofuel@sustainablelists.org/ > > > > > > > > > > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
