admin answers:

Not unless you can figure out a way to produce a semi-conductor at home. Basically a solar cell (photovoltaic cell) is a couple of layers of silicon P type and N type. Electrons become excited when light quanta penetrates into the P layer. The excited electrons move to the N type and (very oversimplified) create electricity.

I doubt you would have the facilities to create the materials at home.

admin answers:

TV, lights and small appliances, yes. Washer, maybe. Dryer, not likely unless it’s gas – consider a clothesline. Electric range or oven, no. Hot tub, no unless it’s converted to a gas heater.

The raw panels are about $3-8 per watt. So for 6Kw figure about $18k for the panels. The charger/inverter and batteries, figure $2-3k more. Figure about $30k including the installation.

You might also consider a generator. The off-grid houses I’ve seen tend to have them, even if they have batteries too. Add $3k for that.

Do you have a creek? Consider small-scale hydro too.

admin answers:

What a bunch of crap. It really shows how corrupt our legislators are when they’ll only support the bailout bill if there are some goodies for their own causes. I wonder how many of them actually thought it was a bad idea but decided it was a good way to get what they wanted.

admin answers:

Solar energy can be produced from solar radiation. Sunlight travels through the upper parts of the earth’s atmosphere. Once this sunlight reaches the surface of the earth, it must be captured so it can be turned into an usable energy source. At the earth’s surface, it is called infrared radiation where it is captured through the aid of photovoltaic or solar cells.Once captured, the sunlight is absorbed into these photovoltaic/solar cells. These photovoltaic/solar cells are then used to convert the sun’s energy into electrical energy. These cells are non-mechanical devices that are made from silicon alloys. Most of the solar collectors resemble black, flat boxes that sit on building rooftops. In the most common design, pipes in the box carry liquids that transfer the heat from the box into the building. This heated liquid then heats the water in a tank or is passed through radiators to heat the air. Below are the common usage of Solar Energy:

Residential

The number of PV installations on buildings connected to the electricity grid has grown in recent years. Government subsidy programs (particularly in Germany and Japan) and green pricing policies of utilities or electricity service providers have stimulated demand. Demand is also driven by the desire of individuals or companies to obtain their electricity from a clean, non-polluting, renewable source. These consumers are usually willing to pay only a small premium for renewable energy. Increasingly, the incentive is an attractive financial return on the investment through the sale of solar electricity at premium feed-in tariff rates.

In solar systems connected to the electricity grid, the PV system supplies electricity to the building, and any daytime excess may be exported to the grid. Batteries are not required because the grid supplies any extra demand. However, to be independent of the grid supply, battery storage is needed to provide power at night.

Holiday or vacation homes without access to the electricity grid can use solar systems more cost-effectively than if the grid was extended to reach the location. Remote homes in sunny locations can obtain reliable electricity to meet basic needs with a simple system comprising of a PV panel, a rechargeable battery to store the energy captured during daylight hours, a regulator (or charge controller), and the necessary wiring and switches. Such systems are often called solar home systems (SHS).

Commercial

On an office building, roof areas can be covered with glass PV modules, which can be semi-transparent to provide shaded light. On a factory or warehouse, large roof areas are the best location for solar modules. If the roof is flat, then arrays can be mounted using techniques that do not breach the weatherproofed roof membrane. Also, skylights can be partially covered with PV.

The vertical walls of office buildings provide several opportunities for PV incorporation, as well as sunshades or balconies incorporating a PV system. Sunshades may have the PV system mounted externally to the building, or have PV cells specially mounted between glass sheets comprising the window.

Industrial

For many years, solar energy has been the power supply choice for industrial applications, especially where power is required at remote locations. Because solar systems are highly reliable and require little maintenance, they are ideal in distant or isolated places.

Solar energy is also frequently used for transportation signaling, such as offshore navigation buoys, lighthouses, aircraft warning light structures, and increasingly in road traffic warning signals. Solar is used to power environmental monitoring equipment and corrosion protection systems for pipelines, well-heads, bridges, and other structures. For larger electrical loads, it can be cost-effective to configure a hybrid power system that links the PV with a small diesel generator.

Remote Applications

Remote buildings, such as schools, community halls, and clinics, can benefit from solar energy. In developing regions, central power plants can provide electricity to homes via a local wired network, or act as a battery charging station where members of the community can bring batteries to be recharged.

PV systems can be used to pump water in remote areas as part of a portable water supply system. Specialized solar water pumps are designed for submersible use or to float on open water. Large-scale desalination plants can also be PV powered using an array of PV modules with battery storage.

PV systems are sometimes best configured with a small diesel generator in order to meet heavy power requirements in off-grid locations. With a small diesel generator, the PV system does not have to be sized to cope with the worst sunlight conditions during the year. The diesel generator can provide back-up power that is minimized during the sunniest part of the year by the PV system. This keeps fuel and maintenance costs low.

admin answers:

Petrol? 🙂
You can’t use a fossil-fuel-burning generator in space because it would cost a huge amount to transport the fuel and the oxygen to burn it from earth. Also you would have to get rid of all the heat, which is not easy in a vacuum.

The ISS uses solar panels to provide all its electrical power. The panels are only illuminated half the time of course; when it is on the night side of earth they generate no electricity so the station runs off rechargeable battery packs during this time.
The total power available at any time is 110KW.

admin answers:

Energy. Powerplants to fossil fuels to wood stoves to solar cookers?

admin answers:

All you need to know is on this site
http://www.wildwoodsurvival.com/
And also yea eating bugs which carry thousands of diseases and putting a lot of them in one bowl will get you sick or could possibly be fatal

admin answers:

Yes, because at a high altitude, the sunlight would pass through a thinner atmosphere . This means that the atmosphere would scattered less energy away.