Tag: energy

Solar Power Products

solar power products
Deserts are basically waste land, but they get a lot of sun. Ideal properties for huge solar power farms?

But how could we harness the vast power produced given the distance to population centres? For example could the power be used to create or transfer a usable transportable product, for example seawater desalination to further transform marginal land..

Jack, your idea is already being built. There are some small experimental solar power stations in the desert. The earlier ones used solar electric panels with limited success, mainly because since these devices are made of silicone, like a computer chip, they slow down and lose production in high temperatures. There is a project underway to use solar thermal collectors in the Sahara Desert to produce massive amounts of electricity, which will be sent to power Europe on high voltage lines. The big difference here is they are not heating water directly to produce steam, instead they are heating oil to several hundred degrees, using both the power of the sun and the natural heat that exists in the desert, and the super heated oil is then used to heat water into steam. Another advantage to this is the oil holds its heat for much longer than the water, so even after the sun has gone down, some energy can be extracted, working like a thermal battery. The plan is to also use the excess during the day to run desalinators and vegetate the area around the solar farm to provide for the people that will live and work at the farm. The desalinators would only run when there was an excess of solar power, in the afternoon, and the fresh water could be stored in reservoirs. There are some excellent photos online, try googling, “Sahara Desert Solar Project,” then click on Images near the top left of your screen.

Solar power is still a very small slice of our energy mix today, but like wind, as we find ways to improve its production and sustainability, it will grow quite quickly over time. Over the planet as a whole, wind power is being increased by almost 30% each year. In a few years, solar will most likely do the same. We live in a home in the Northern Midwest that is completely powered by the wind and sun. Twelve years ago when we started on the project, almost everyone thought we were wasting our time and money. Now our electric bills are less than $5 per month, and the power has not gone out at our home for even a minute the last 7 years. Now the general public tends to think the same thing about grid power coming from a renewable source as our neighbors thought about our home 10 years ago. If you want to learn more, there are some great non profit groups involved in this stuff, I will list some below. Take care jack, Rudydoo

“SAMURAI” Solar Power Generating System for Home Use by Kyoc

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Solar Water Pump

solar water pump
Rotary helps build homes in Mexico
BRATTLEBORO — The Brattleboro Rotary raised more than $9,000 with their International Film & Food Festival in November, which is enough to completely fund the construction of an adobe house for a needy family in Guanajuato, Mexico.
Solar Water Pumping System Installation in a water well.

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Solar Power Companies

solar power companies
How many of you use solar power for your houses?

I hear a lot of complaining about the oil companies and power companies “ripping” you off. The option is there. Do you utilize it? If not, why not? Or is it so much easier to complain then to do something? I know a lot about solar, so no BS please.

My dad bought this for our home… If you would like to do this be aware that you need to wait at least 7 months because the silicone that is used in the panels is hard to manufacture. The benefits and tax deductions can save you thousands of dollars. You can sell the unused power back to PG&E so your bill can be zero. Get a company that is based in your area. We went through Home Depot. It also adds great equity to your home.

HUMAN WATT POWER Stationary Bike Grid Tie Inverter Solar Electric Bicycle SOLAR FITNESS CLUB

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Solar Battery Power

solar battery power
Which configuration for a solar cell will power a battery faster, parallel or serial?

Why does one configuration work faster than the other? Can someone explain this to me please?
If all variables were equal, and the two solar panels sat in the same sun which configuration is likely to power a battery more quickly, the one with parallel configuration or serial configuration?

depends on the battery voltage and the solar cell voltage.

You need the solar cell output to be a few volts higher than the battery voltage, so you put the cells in series until the voltage is high enough. Then you can put another equal string(s) in parallel to get more current.

It gets complicated by the fact that the solar cell voltage varies with load and with amount of sun, so in practice you may need more in series to get to the proper voltage.

.

Indoor Solar Cells? A 500 Megawatt Proposal

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Solar Heat

solar heat
Renewable energy: Labor coalition’s tactics draw heat
Do California construction unions raise concerns about building massive solar plants in the Mojave Desert because they care about wildlife, water shortages and delicate vegetation? Or is it, as some fellow labor unions charge, a way to extort expensive contracts…
Solar Heater

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Solar Power Plants

solar power plants
Solar power reaches southern W.Va. coalfields
A group devoted to creating alternative energy jobs in Central Appalachia is building a first for West Virginia’s southern coalfields region this week — a set of rooftop solar panels, assembled by unemployed and underemployed coal miners and contractors.
PHY NYC Solar power plant in Spain

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Solar Companies

solar companies
how can the electric companies afford to put solar panels everywhere, but not on our houses?

it seems to me that we are just letting the power companies capitalize on a power source that really should be more accessable to us, the ones that have been paying for nuclear and other power sources that we can’t, by law, have installed on our property.

Keep in mind the issues of scale:

Solar panels on a commercial scale cost something on the order of $7.25/watt to install, of which roughly half of that is for the panel itself (retail). This includes inverter technology but not storage. This works out to about $7,250 per KW installed.

A nuclear plant in today’s dollars will run between $5,500 and $6,000 per KW installed.

A 5,000 watt solar system on your house will cost approximately $35,000 to install. Cheaper per watt than commercial as there is no supporting infrastructure to build.

The differences between actual costs and what is paid by the end-user are subsidies provided by state and local governments and utilities.

So, if you are in an unsubsidized area, you are perfectly free to install solar power on your property – if you can afford it.

Now, if full life-cycle costs are included (installation, maintenance, cost-of-operation, and final disposal when done) nuclear and solar are also very close in cost. The difference is that a 480MW nuclear plant may be fit on about 660 acres of ground including cooling towers, access roads, set-backs and so forth – and could be set on less than 100 acres if necessary (many are).

The same capacity solar plant (at 10 watts per square-foot, peak power) would cover 11,000 acres or so, *not* including infra-structure, access roads, set-backs and so forth.

Solar power is a feel-good solution that is pretty impractical on the face of it *UNLESS* there is no alternative solution. But, because it is being subsidized by various sources, is highly visible and has all sorts of warm-and-fuzzy but generally thoughtless advocates it is popular beyond its worth.

We are actually considering it _because_ of the subsidies. But at face-cost nohownoway.

San Diego solar companies, solar power, commercial solar panels

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Solar Power Panels

solar power panels
Solar Panels-how much power should I expect to get on average from a panel?

What percentage of the rated power? Panels would go in the northeast. I mean just in general I know that panels are generally about 11-19% efficient but of the rated power what should I actually get on average given average conditions? If I had a 200W panel would I get 100W? 50W? 150W? Thx in advance.

Panels are rated at a standard test condition (STC). The rated output has nothing to do with efficiency. A more efficient panel is physically smaller than a less efficient panel, a 200W panel outputs 200W at the STC, regardless of its efficiency. You’ll generally pay more for a more efficient panel, so if space isn’t an issue, you may be better off getting a less efficient panel, you’ll get the same output, but it will take up more space.

make solar power panels

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Solar Power Battery

solar power battery
How to make a solar powered battery charger?

A home base DoItYourself for residential purpose.

The simplest way is to get a battery and a solar panel of a slightly higher voltage than the battery*. Good point Bob B; get a diode, too. Then put the solar panel in full sunlight and connect the positive ends and negative ends** and the battery should charge. The charging is done when the battery’s voltage is what it should be.

This method should not be dangerous with small batteries (AA, AAA, 9V), but don’t use it with a power outlet, and don’t use it to charge, for example, a car battery. Still I take no responsibility for any damage to people or property.

* Test the voltage of the solar panel under the amount of sunlight you plan to use it in.
** This is how I charged my cellphone battery for about 2 months before I got my cellphone fixed. (I didn’t use a solar battery; I connected the battery directly to the charger.)

Solar Power Does The Switch, Travelers Solar Battery

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Solar Inverters

solar inverters
Anyone with Solar Combiner which is fed by 4 single phase inverters and at the output,it gives us 3 phase load?

Combiner Schematic?

All solar combiners that I have seen combine DC, not AC.

To synthesize 3-phase power from single-phase sources, one in theory could combine 3 single-phase sources (not 4), but they would have to be synchronized so that each produces the same frequency and each is phased 120 electrical degrees apart from the others. It would be easier to combine one or more DC circuits (as many as you want) to drive a DC bus from which an inverter synthesizes three-phase power.

SUN 250 Grid Tie Inverter testing with Solar Panels

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