Homemade solar panels and their industrial counterparts

Nowadays, people can not do without gadgets about which their parents did not even have an idea. Even when going on hikes and on picnics, they take laptops, camcorders, gps navigators, televisions, music centers, etc. with them.

Electric sockets have not yet been integrated into the surrounding trees, and batteries have the ability to discharge. Therefore, renewable energy sources are becoming especially relevant. One of them is solar panels.

Homemade Solar Panels

Choice of homemade or industrial solar panelsThis is a choice of cash expenses and hobbies. A man or woman whose hands are attached to the right place is quite capable of making a homemade solar battery in one two weeks. Money gain for a battery with a capacity of about 60 watts, it turns out about $ 150-200.

Where to buy accessories?

One element, 8x15 cm in size, excludes customs clearance and delivery of $ 1.8-2. For a battery with a power of 50-60 W, you need 36-40 cells. Some stock is needed to replace items damaged during transportation, as they are very fragile.

Shopping tricks

It is better to buy materials and components on eBay in small batches, in this case you can save on customs payments. In addition to solar cells, you will need tinned flat bus wires to combine the elements into a common battery, POS-61 fusible solder, schottky diodes, glue, flux, plexiglass, textolite or plywood, double-sided tape, aluminum corners and fasteners. You can buy a lot in domestic stores. It is better to choose solar cells with already soldered conclusions, because independent soldering of these conclusions is very laborious.

Technology tips

First of all, you need to determine the substrate material, i.e. with what solar cells will be mounted on. It is easier to use plywood, but if we talk about durability, it is better to use plexiglass. On the side of the incidence of sunlight, a thin 2 mm, on the side of the substrate a thick 4-6 mm.

Elements are glued to plexiglass using thick double-sided tape. With the help of several layers of adhesive tape, you can adjust the distance between the external and internal plexiglas, i.e. the thickness of the assembly within which the solar cells are located. The ends of the assembly are sealed with silicone sealant. You can strengthen the ends with aluminum corners.

Results and measurements

If you did everything and connected correctly, then at idle (without load) your battery should give out about 21-22 V, under a load of 17-18V at a current of 3-3.5 A. Thus, we have an output power of about 60 watts. A schottky diode is a diode with a low voltage drop, i.e. with low losses on the transition. It must be used if you are charging the battery using a solar panel. In the absence of sun, the diode does not allow the battery to discharge due to reverse current.

What does the industry offer?

Take for example the TSM-60 module. This is a 60 W glass solar battery measuring 102x48x3.8 cm, weighing 6 kg. The voltage under load 17V, current 3.5 A. This product is worth 10,700 rubles. or about $ 370. The smallest battery TSM-15 (15 W) costs 4,500 rubles.

Solar Installation Tricks

It is clear that it is best to install solar panels in the least shaded places and as high as possible so that their "daylight hours" have a maximum duration. It was experimentally established that the front side of the solar battery should be oriented south, with a deviation of no more than 20 degrees.

If we talk about the angle relative to the horizon, then for a year-round system, this angle should be equal to the geographical latitude of the installation point. If the solar battery is used only in the summer, then this angle should be equal to the latitude of the area minus 15 degrees.Ideal systems with a change in angle, depending on the position of the sun, i.e. motorized. But such drives are quite expensive. Usually, solar panels are placed simply on the roof slope.

Solar and windmill operation

Many firms offer autonomous power supply systems that integrate multiple sources of renewable energy. For example, it can be a wind power station, a small hydroelectric power station and a solar battery.

Next, a control and stabilization module with a battery controller and the battery itself are used. In this case, at least one energy source almost always works. With the annual steady increase in electricity prices, such systems are becoming increasingly popular.

conclusions

Of course, everyone chooses what to spend money on. But if we talk about preserving the environment, about a good ecology, then solar panels are an ideal solution. From year to year, their efficiency increases.

In addition, there are devices such as solar collectors. These are devices for direct collection and utilization of solar heat in the home. A tandem of solar panels and solar collectors is even more efficient.

Try to do something with your own hands, and your life will become more interesting. Perhaps you will make new friends or build your own business.

Read also on this topic: Solar Power For Home

Comments

[#1]

Indeed, photovoltaic cells (photoelectric cells) are better to buy on eBay, since domestic ones are more expensive! A purchase of 1.1 kW in frontal with delivery and customs clearance (80 * 150mm) of $ 750 (a set with conductors, flux and diodes) also requires a controller for the normal operation of the batteries, add another $ 275, all the same eBay. For normal assembly, you need glass, I took 8 mm red-hot, another $ 300 (1600 * 960 * 8 6pcs). There, you also need to add aluminum corners, for framing the batteries, they cost $ 6 per kg (6 corners 5.2 meters in size 55 * 35 about 30 kg). Well, for sealing, you need two component silicone resins of 1.1 kg for each battery, all the same eBay, add another $ 350. Well, consider for yourself, and this is without batteries.

[#2]

Useful article. Correctly noticed, it is always good when you can save.

[#4]

In our conditions, using solar panels is not profitable. Their prices are unrealistically high, and the returns are scanty. Unfortunately, the sun shines very rarely here. If you behave and buy solar panels, your grandchildren will also have time to become adults, but you won’t return your money. Even in hot southern countries such as Spain and Italy, various subsidies for this matter are almost free. And so just not one normal Spaniard with an Italian for their hard-earned money will not put this good. Even for them, installing solar panels is not economically viable. And the sun they have ten times more than we shine! Now think about whether to buy solar panels. Too expensive toy turns out. I am not a poor person and I could afford if I had seen at least miserable benefits. And in this case, only divorce and swindle. And most importantly, no one writes about this. Everyone only praises. All this is not casual.
Pavel Alekhnovich

[#5]

The use of solar energy is not only interesting and beneficial, but also extremely useful in terms of eliminating factors contributing to global climate change.
It seems to everyone to have realized that the current climate changes are catastrophic in nature, increasing exponentially.
So it is necessary to deal with solar energy even to the detriment of your finances.
Good news.Recently they came up with a non-waste method of manufacturing crystalline silicon for solar cells, promising to reduce their cost by half (the cost of one watt -40 cents is indicated in the source). In addition, the elements obtained are flexible and weigh very little because of their small thickness - only 20 microns.

TWIN GREEKS TECHNOLOGIES is a manufacturer of equipment using the new technology of solar cells. In addition to the small thickness, low cost, new solar cells are also more efficient than conventional solar energy conversion part. Those. thickness is less - losses are also less. And the flexibility of new elements ensures their application on any non-linear surface.

[#6]

1 $ -element-4W-need-500pcs at least for 2000W per day i.e.-500 $ -solar battery + 600 $ -batteries-6pcs. At least 100 $ -inverter with all of this every 2 years battery replacement comes out per month we reimburse $ 100 for electricity OFF OFF SAVINGS DO NOT MIX OUR HEELS

[#7]

Solar panels justify themselves only for powering a GPS receiver, radio, tablet, netbook and similar gadgets in traveling conditions.

[#8]

Thank you for distributing the correct information. You do a good thing, but be careful.

[#9]

I consider your optimism premature. Cheaper to buy China. If not for one but. The price of batteries is sky-high. Replacing them every 2 years negates all savings. 100d - 1pcs. It takes min. 3 in operation and 3 reserves - 600 shares. 25 five percent at an overhead cost per month. After 2 years, 25 more per month, etc. I pay RES 10 for all com services. The question is fucking .. do I have this solar power?

[#10]

All right said !!! Only for a hike ... if you didn’t need batteries, it could constantly be changed and it would be worth buying and installing, and so the game is not worth the candle ... a divorce for suckers to please the plants producing these elements ... and then if there are mono crystals. . else you can buy for a hike. And then they began to generally flexible go-but sell in rolls especially American Jews on a poly .... generally the efficiency go-but ... oh people .. dumb and not treated !!! Slaves you .. slaves of the system !!!

[#11]

The choice of course remains with each of us ... But! To choose, you need operational experience and real expenses .. I took two used batteries for the garden .. But I use only one and have already forgotten when I bought it .. Well, at least 3 years - that's for sure .. With a charger (from the usual network) was charged up to 12.381 V, but now (from the solar panel) every time at least 12.823 V! And I can work with flex (600 W) and other receivers, of a dynamic nature, the same or less power, and static - like heating elements and up to 1KWT with an inverter (Chinese) 1200 Watt. So, my friends ... You will not try, you will not understand. And besides, I learned a lot of nuances during the operation of all the elements included in the source ... And the cool thing is that the battery works (when charging from the solar panel) much longer than after normal charging from 220 V.
Hello everyone and best wishes! There will be questions, do not hesitate to ask ..))