Comments for Alternative Energy

Comment on HQRP 6 Watt Solar Panel 6W Power 12V Monocrystalline PV Module plus HQRP Mousepad by Guy Mason

Guy Mason — Mon, 08 Mar 2010 12:26:46 +0000

I got this to use in the hot sun of the Black Rock Desert. It was as good as I hoped. My only criticism is that if one finger is on the front panel is completely cut off all power (but I think the same thing with all panels) and the production was well removed from the specifications. This may be normal, but I put a chip voltage regulator (~ $ 1 at Radio Shack), because he spends about 20V and I just wanted to 12V.

Worked great for charging the phone or run a 12V fan.
Rating: 5 / 5

Comment on Sunforce 39810 80-Watt High-Efficiency Polycrystalline Solar Panel with Sharp Module by HMMWV

HMMWV — Sat, 06 Mar 2010 18:27:15 +0000

In the evaluation of solar panels (and systems in many groups), the usual price point is $ 5. 10/watt of high volume production. If you find a better price than that something is wrong.

Panels An example in May that the inefficient use of larger panels, causing panel view of such size that it is 4-8 times larger than the panel with the same performance .

inefficiencies others to watch are caused by strains that are not useful. For example, a panel outlet 500V 1 / 10 A to 50W sold for $ 250 - looks good financially, but really get the inspectors go well above 250 volts (and many are not 250 volts - some are 12 or 48 volt systems). So that the room is not very

This panel in the sweet spot - enough energy to be useful (80 W / 3 is an approximation of the value of strength you can get a battery all day - about 25W or so given inefficiencies. So, in theory, could support a load 25W 24x7 with a day of 8 hours in the sun.

Inefficient last on the lookout for signs that require a heavy sun before they give some results. Del produce usable panels (1-2 amps) output with only ambient stray light by a foggy day, then others give zero at the end of sunlight struck on the head. This view of the panel gives the results when it is light, which is good. More light is always better, but it could be worse .

So, to summarize - there are no traps here. It goes all the controls on prices and performance. We load tested a chain of 12 of them for a customer profile of their products in order to determine if a rotator help and he showed a very small gain would come from the burden of automatic rotation due to the effectiveness of the group from many angles. With 12 panels we produce 1kW for 8 hours with the cone upside down on both sides.

Best of all, it can be used in series strings to tie or grid with Leaders of the battery Rating: 5 / 5

Comment on Sunforce 39810 80-Watt High-Efficiency Polycrystalline Solar Panel with Sharp Module by V S

V S — Sat, 06 Mar 2010 16:05:29 +0000

80 Watt / 4. 67 amps = 17 volts.

sure to size your system correctly to minimize voltage drops in your UPS.

Sunforce is not the cheapest, but still a good price and a good solid product with a warranty of 25 years.

Note: SOLAR get an assessment - you can not claim tax credits if you do not!

also do math yourself. If you live on the 43rd parallel and get 4th 4 hours sunshine a day on average do not place them at 43 degrees! Tilt the approximate angle of the summer sun. You will get more sun in summer and low in winter, but you do very little in winter anyway! You get the annual production of more (or get a tracker and no mathematics)

technology becomes better, cheaper manufacturing processes and increased frequency and improvements leading greater efficiency. If you want better stuff, I do not know how "long", you should wait. It may not be as good, it is not potput to duble or something. The laws of physics Rating: 4 / 5

Comment on Sunforce 39810 80-Watt High-Efficiency Polycrystalline Solar Panel with Sharp Module by Gregory K

Gregory K — Sat, 06 Mar 2010 16:04:40 +0000

Committee took into Death Valley for a few days to recharge my battery and trailer while I was running and iPod portable stereo for hours at night, load quickly, the battery the next morning. Creating a solid tripod / rack to hold it upright with PVC pipes that are easy to disassemble, lock and safe. At 80 watts, it’s just a sign that some units have 3 panels 65watt.
Rating: 5 / 5

Comment on Sunforce 39810 80-Watt High-Efficiency Polycrystalline Solar Panel with Sharp Module by Dana Henriksen

Dana Henriksen — Sat, 06 Mar 2010 14:46:24 +0000

I bought 4 of these solar panels. They were easy to install and worked very well for the last month. They operated in the neighborhood of 80 watts each specified which is pretty good for December in Utah.
Rating: 5 / 5

Comment on Sunforce 39810 80-Watt High-Efficiency Polycrystalline Solar Panel with Sharp Module by Arik

Arik — Sat, 06 Mar 2010 12:33:21 +0000

As my first investment in solar was a sign of Nice. I have about a month. I coupled with a “Xantrex Technologies 802-1500 Xpower Powerpack 1500 Watt Portable Backup Power System” and “Sunforce 60032 30 Amp Digital Charge Controller. The panel is 12 volts, 4. 6 amps, but at this point I look up to 13 6 volts and 5 amps. I suspect that over time it weakens the panel will be about 12 volts, 4. 6 Amp. The panel was easy to connect and you get what was required. I have not bought a new thread because I needed more distance when I installed it. I can charge the battery died full time in 2 days. If I had to rotate the panel by day I feel I could be completely recharged in 1 day.

Nice backup load and learning. For any real application you would need a ton anyway.
Rating: 5 / 5

Comment on Sunforce Wind Generator – 24 Volt, Model# 44445 by M. Russell

M. Russell — Sat, 06 Mar 2010 11:20:09 +0000

400 watts divided by 24, in which they use 28 volts because thats what it charges is 14 amps. These 24 models of 14 volts amperes, not 27 or 28 amps. 12 volts of them are 27 to 28 amps.

Mike
Rating: 3 / 5

Comment on 5 watt Solar Panel by John Darr

John Darr — Thu, 04 Mar 2010 14:51:31 +0000

Have used this group for over a month. Shipping was super fast (3 days buy the mailbox FM FM AC VA). Works incredibly well. The pumps were 17 volts. 3 amps. I need to find more. 48 amps, I need to run a fan in a solar oven wood. But good and affordable product.
Rating: 5 / 5

Comment on 5 watt Solar Panel by S. Peterson

S. Peterson — Thu, 04 Mar 2010 13:25:09 +0000

This panel performs well 5W. It is everything the description says. Very easy to install. I had a charge controller already, so it was easy for me to join this group heavy to run my weather station.

I tried plugging my own solar panel array of assembling small solar panels solver disappointing results. With 6 200 mA panels, but I was not getting enough juice. A multimeter showed that the total production was 200 mA for all 6! (3 sets to 2 9V panels in parallel).

With this unique panel CDT I get more than enough power. The measure already installed heavy tinned wire is about a foot long, so I ended up connecting an additional control for them. I was grateful for the cables were already connected (very strong) on the panel already. My previous experience with son connection to solar panels have been frustrating.
It is difficult to believe that the excellent quality I got for the price. Rating: 5 / 5

Comment on 5 watt Solar Panel by L. Matthews

L. Matthews — Thu, 04 Mar 2010 13:18:47 +0000

This is simply the best 5W panel you will find – anywhere. Very durable design w / an aluminum frame and epoxy sealed tempered glass (this is * never * get rid!). The effect was also tested better than nominal. Compared with other plastic products 5W (which I also took while working), this is a much better product. My next project will be much bigger and I will certainly order from TDC again. This was one of the Amazon best. com purchases I made.
Rating: 5 / 5