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Learn here how solar works

By: Inge Kesteren


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Solar cells, also called photovoltaic (PV) cells, allow us to make use of the sun’s power to create electricity without noise, pollution, breakable constructions or fossil fuels. Therefore you will not have to worry about utility rate increases anymore and you will live green. Allow me to tell you first how solar works.

Batteries
Solar PV systems come in two types: with battery and direct. On a day with high sun intensity the batteries of your PV system will be charged. A standard household uses 20 to 30 Kwh. A battery system provides a little less (18 Kwh). Luckily, a battery system is not only used in off-grid houses they can be found in a grid connected house as well, for when the sun doesn't shine..

To understand how solar works, you should know that it is not possible to simply plug your solar system into your house wiring as the voltage output generated by your solar system change wildely due to instable solar intensity through the day. This would blow away your home equipment as it´s extremely vulnerable to electricity fluctuations. You need specific equipment like batteries, inverters and transfer switches. Batteries act both as storage and as a buffer to absorb the variable power output of the installation and shield the inverter.

You don't have to use a battery when you stay in an urban region and you can be connected to the grid. But I advise you to consider it though, because it might come in handy. With the energy of the sun you can power your dishwasher through the grid connection..

Batteries are used for the storage of energy. While the sun shines the battery is recharged and this energy you can use when it is a cloudy day or at nighttime. With home made solar panels you can't supply the unnecessary electricity back to the grid. Therefore you will need a battery-bank. Now you know how solar works.

Even though a PV panel creates energy when the sun is shining, there are other items, besides the batteries, wanted to conduct, control, convert and distribute the produced electricity.
Which of these items you would need, depends on how you make us of the system. An inverter is one of the items you can't go without. The inverter converts the electricity which is stored in the batteries (direct current DC power) into energy which we use in our houses (alternating current AC power).

Inverters
A bank of batteries will normally offer you 12volts, 24volts, or 36volts, whilst grid electricity is usually at 240volts. In your home you will have to use at least 240 volts, the inverter changes the 12, 24 or 36 volts of the bank of batteries into 240 volts. A ‘true sine wave’ inverter send a harmonious flow of electricity to your devices, just like the flow which comes from the grid. This flow is needed since it protect the sensitive items which stand in your house and need a dimmer or speed controller. This you ought to know to understand how solar works.

Now You can go to a local solar contracter or make your own solar panel to reduce your energy bill.

Article Source: http://depositarticles.com/

Check our site for the latest Review of the Best Guides for Homemade Solar Panels if you decide to build the panels yourself. Also check out our #1 from this review: the Earth4Energy manual. Marly Kester (the author) is an expert in renewable energies and energy efficiency for ENERFY. EN

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