Repost please: $1/watt solar panals.
in [Basics]
|
From: nospam on 29 Oct 2009 09:13 Michael A. Terrell wrote: > Dirk Bruere at NeoPax wrote: >> Michael A. Terrell wrote: >>> nospam(a)nevis.com wrote: >>>> Michael A. Terrell wrote: >>>>> nospam(a)nevis.com wrote: >>>>>> TheM wrote: >>>>>>> "vaughn" <vaughnsimonHATESSPAM(a)gmail.FAKE.com> wrote in message news:hc7utq$1a1$1(a)news.eternal-september.org... >>>>>>>> "Don Lancaster" <don(a)tinaja.com> wrote in message news:7kooa3F39fllbU1(a)mid.individual.net... >>>>>>>>> For net energy, a quarter per peak pv watt is needed. >>>>>>>>> >>>>>>>>> Even then, it would be many years after a quarter per watt for actual breakeven, owing to all the previously lost energy. >>>>>>>>> >>>>>>>> Huh? I usually agree with Don on these things, but here he seems to be confusing energy break even with economic break even. I a >>>>>>>> perfect world they might be comparable, but I doubt if that is true in the real world. >>>>>>>> >>>>>>>> Vaughn >>>>>>> I think what he wants to say is that energy break even is many years down the road, >>>>>>> possibly decades. And fixing and maintaining it might kill the small net energy surplus. >>>>>>> And before we get to break even we might have new, much better technology. >>>>>>> >>>>>>> M >>>>>>> >>>>>>> >>>>>>> >>>>>> Who knows, but for a $1.98 a watt it's a good deal if you want to give >>>>>> it a go. I know I could run my home office off a couple of panels >>>>>> (laptop, printer etc.)Even having a couple would keep the lights on >>>>>> in an emergency. >>>>> If there is enough sun to power the lights, you don't need them. >>>>> >>>>> >>>> After 4pm six months of the year, yes I do need lights. >>> >>> The solar panels are worthless for that use without expensive, short >>> lived batteries. >> Cheap deep cycle batteries with a 15 year guarantee are available > > > What guarantee do you have that the seller will be in business next > year, let alone 15 years from now? > > And the sun could snuff out tomorrow, life is chancy. With your viewpoint we'd all still be huddled around the fire afraid of the dark. There are no 100% guarantees about anything but your own mortality.
From: Paul Keinanen on 29 Oct 2009 09:21 On Thu, 29 Oct 2009 08:12:41 -0400, "vaughn" <vaughnsimonHATESSPAM(a)gmail.FAKE.com> wrote: > ><nospam(a)nevis.com> wrote in message news:4ae8ff39$1(a)news.x-privat.org... >> For a laptop, printer and a couple of 15 watt compact florescent lights? >> Hardly a huge expense, with 1000watt inverters $100.00 on ebay, a couple >> of Sams' club deep cycle batteries ? > > Actually for system you don't really need inverters at all. I use >12-volt compact florescent lamps, Which definitely contains an inverter, thus, adding cost. >and 12 volt adapters are available for >laptops. Which possibly also contains an inverter to convert 12 V to 17 V. > I use the lamps out in my yard, and my in-home 12-volt wiring >system is slowly growing. This is a good strategy if the 12 V system total cost is less than the cost of more common 120 V (US) or 230 V (Europe) systems added with the inverter cost. Paul
From: Josepi on 29 Oct 2009 09:31 Ten years from batteries? Not if you actually used them and didn't just keep them on float. I have heard this story over and over from manufacturers but I have not heard of anybody, actually using their batteries and discharging them each night to a resonable level, that gets more than a few years of dependable usage out of them. The solar savings would never pay for the batteries, compared to bulk manufactured energy "vaughn" <vaughnsimonHATESSPAM(a)gmail.FAKE.com> wrote in message news:hcapcg$r2b$1(a)news.eternal-september.org... > Expensive, yes. But define "short lived". With proper care, 10 years > or more is not unheard of for a good set of lead acid batteries. In the > past, I have been lucky enough to "scrounge" good used batteries from > large UPS systems. In my home system I typically get another 5 years > service from them. > > Vaughn > > > "Michael A. Terrell" <mike.terrell(a)earthlink.net> wrote in message > news:yqadnW0BsJ4uR3XXnZ2dnUVZ_sydnZ2d(a)earthlink.com... >> The solar panels are worthless for that use without expensive, short >> lived batteries.
From: Josepi on 29 Oct 2009 09:34 Post the guarantee here so we can see what it says. Let's see if we are allowed to actually discahrge the batteries and still get our 1% back. "Dirk Bruere at NeoPax" <dirk.bruere(a)gmail.com> wrote in message news:7ksko4F2uoks2U1(a)mid.individual.net... > Cheap deep cycle batteries with a 15 year guarantee are available > -- > Dirk > > http://www.transcendence.me.uk/ - Transcendence UK > http://www.theconsensus.org/ - A UK political party > http://www.blogtalkradio.com/onetribe - Occult Talk Show
From: Josepi on 29 Oct 2009 09:36
My 120v inverter costs me 130-200 watts of power when the sun shines just to be humming "Paul Keinanen" <keinanen(a)sci.fi> wrote in message news:t15je595rkli69ea8kvac2r4utphpjrl4s(a)4ax.com... > On Thu, 29 Oct 2009 08:12:41 -0400, "vaughn" > This is a good strategy if the 12 V system total cost is less than the > cost of more common 120 V (US) or 230 V (Europe) systems added with > the inverter cost. > > Paul > |