Build your own solar power system

Earth For Energy

2011-01-19T02:21:00.000-08:00

Earth4Energy is a guide that teaches how to build a homemade solar panel and wind turbine at a very low cost. It also claims to reduce 80%-100% of your electric bill. However, is it true? Did the guide really people in achieving their goal? Well let me share you something about the guide.

The Contents of the guide consists of -
How to prepare Building A Green Energy Source, How does the Solar And Wind Power Work, A Detailed Instruction mentioning How To Build Your Own Solar Panel or wind turbine, Colorful images to guide You Along The Way, Pin Point Accurate directions and important steps, How To Obtain components For Free.
The site claim that you can build your own Solar or wind system for less than $200.Well, after going through the guide, one main benefit you get is knowing how to get a $600 battery free. If you can follow the instruction properly, you can reduce costs by 90%.The site also claims of saving up to 80% electricity.
I had built a mini solar system to generate enough solar energy to power my light bulb to test it out and it worked out fine. So one can go ahead to build a big one and save up to 80% of the electricity bill.

The results vary from person to person, because everyone uses a different amount of fuel or consumption of electricity at their home. But it is sure that you will get back your investment after following this guide and the kit within a few days. Energy prices in the global world are rising up and we need such alternate energy to generate savings which will secure for the future.
Many scientists and experts are exploring further to seek alternative fuels that will reduce greenhouse effect caused by the fossil fuel gases. Now is your chance to come forward and do your part and help the environment. Even if this is not your objective, then also you can are still saving massive amounts of energy.
Quickly, let me mention the return on investments on taking the product Earth4Energy.This windmill kit will cost you around $100, which is really nothing when compared to the average energy bill that you get every month. This windmill will be generating you the power or electricity for at least the next 3 to 5 years, possibly saving you lots of dollars in your energy bill. Also, the solar panels can be easily constructed with a budget around $150, which is very cheap compared to those professional installs. Also even if you have a professionally installed device, then you may have to wait for years before you get back the money.

How solar cells work ?

2011-01-04T22:32:00.000-08:00

Solar cells have the working principle as a diode when no light. The composition of solar cells as well as diodes, which is composed of two layers called the PN junction.
When light comes and strikes the surface of the N-Si with a thickness of 0.5 μm, the light energy is absorbed by h.v, or so-called photons. Large photon energy, can release electrons to the depletion layer region, this causes the occurrence of free electrons and holes (positive charge carriers). Therefore there is a fairly large
electric field in depletion region, the electrons move to the area N-silicon, and holes moving into the area P-silicon. The process of release of electrons and holes occurs faster than the recombination of electrons and holes.

If we connect the ampere meter to the positive and negative poles, the meter indicates deviation, this is because the electrons move from negative to positive.

Introduction

2010-12-05T21:17:00.000-08:00

To build a solar power system, installation of electrical components must be calculated eg current, voltage, power, and load requirements. Below is an example of the power consumption from solar power.

Power	Type of Load	Examples of usage
uW	Complex electronic devices with small power	calculator,pocket computers, watches
mW	Type A : Equipment that is rarely used	Transmitter and receiver with a small capacity, LED Viewer
	Type B : Medium-power equipment, but rarely operated	alarm systems, radio pocket, children's toys, small battery charger and hand tools.
W	Type A : Medium-power equipment	Telecommunications equipment, water pumps, household appliances: lights, TV, fan, refrigerator and a store of goods
	Type B : Equipment with power requirements up to KW but rarely operated	Transmitter, housewares, lighting systems, water pumps.
kW	Central electric networks with large energy needs	farming tools, household appliances, rural electrification and water pumping installations.

By knowing the limits of power generated, solar power plant can be designed from the needs of power.For more complex systems that need to be considered is the problem of efficiency.

Introduction

2010-12-05T21:16:00.001-08:00

A solar cell has the following characteristics :

In the open-circuit condition, where the connection to the load (point A and B) is open, the magnitude of the output current is 0 Ampere, while the output voltage is maximum (Voc). In a state short circuit, point A and point B short-circuited and consequently the voltage points A and B is 0 Volts, while the current flowing is at maximum (Isc).

Wiring diagram

By installing a variable resistor R at points A and B, measure the voltage and current in the variable resistor R and then by varying the variable resistor value will be obtained graphs of solar cell characteristics.

From these voltage and current measurements we can calculate the maximum power of solar cells (MPP = Maximum Power Point). With maximum power is obtained Impp and Vmpp the voltage at maximum power Pmpp.

Introduction to Solar Module

2010-12-05T21:16:00.000-08:00

Solar modules have symbols such as solar cells. The voltage generated by the solar cell is 0.4 volt (size 10 x 10 cm). To get the required voltage and power, we need a lot of interconnected solar cells, called solar modules.

By installing more solar cells in one module can be gained many advantages, among others :

1. Increase the voltage and power

2. Protect cells from collision

3. Strengthening the electrical insulation

4. Securing of weather disturbances

5. Protect from loading due to changes in temperature

6. Easier installation

Solar Cells

2010-10-22T22:53:00.000-07:00

Solar cells are electronic components that can directly convert energy from sunlight into electrical energy. This process is called photovoltaic. Photovoltaic is derived from the Photo and voltaic, Photos can be define as a process of radiation from the sun that affects the collision between silicon atoms with photons from sunlight and are usually called energy. Voltaic means the release of electrons from silicon atoms due to the collision which accumulate on the negative pole. Photovoltaic is a process that uses sunlight directly. More details can
be said that sunlight can be converted directly into electric current with the help of solar cells. Now solar cells also known as Photovoltaic (PV).

Solar cells are usually made of silicon dioxide obtained from the rock from the mine. The rock is then crushed into small pieces of silicon for later compressed into the form of bars. These bars will be sliced into plates approximately 0.3 mm thick.

There are several important factors to be considered in the manufacture of solar cells:

Selection of materials used
Structure of charge
Separation Connection Systems
Anti-reflective layer.

Rear output contacts can be made closed or made one full flat layer. But the front could not be made flat because the light that comes will be blocked. A transparent material is selected to front contact. For example oxyd transparent of silicon materials and and assembled with conductive plate. With good planning system, the beam lost less than 5%.

Basic principles of semiconductor materials is easily reflect light coming. In the case of cells made from silicon, light will be reflected by approximately 30%. By providing the anti-reflective glass on the front of the light absorbed in the silicon cells become more numerous, so that the reflected beam loss is less 1-3%.Learn More

Basic Meteorology

2010-10-21T20:14:00.000-07:00

In some solar radiation, there are several types of light waves of different length. Some light can be seen by human eyes (known as visible light). and some other unvisible. Constant solar radiation above the atmosphere that magnitude occurred in 1367 W/m2 (Watts per square meter). After reaching the strong atmosper, the amount of radiation reduced as much light is lost due to absorption, reflection and so on.

The sunlight that falls into the earth's surface, in principle, can be divided into three types, namely:

Direct rays
Ray diffusion
Global beam

Global beam (G) on earth is 1000 W/m2 maximum achieved when the sky is clear, while the surrounding cities up to 800 W/m2. So if the solar cell or solar module covered by cloud or shadow of another object, the cell or solar module is only just getting light diffusion.

Global Light Scheme

Strong sunlight is not always constant.When the weather is cloudy then the amount of energy produced is not much, but when the weather is sunny then the energy produced will be huge.The resulting of short circuit current solar cells is directly proportional to strong irradiation.

History of Solar Energy

2010-10-21T17:59:00.000-07:00

In 1955, USA Bell labs succeeded in making solar cells from silicon that is used for outer space activities. It turned out that solar cells proved able to produce a reliable energy. The first satellite that uses solar cells is Vonguard I, which was launched in 1958, and worked very well and longer than expected.

At the beginning of solar cell products used mainly in the framework of space activities. the price of solar cells is very expensive because there is no practical industrial rivals. After going through the process of development then the price of solar cells become cheaper so that it can be made individually.

In a further development of solar cells used to help meet energy needs through small-capacity power plants in units of milli Watt (mW), for example, for a calculator or watch. In some countries the central power station built on a large scale in units of megawatts (MW).

Why Build Solar Power System For Your Home?

2010-10-21T08:37:00.000-07:00

The sun is the source of energy for all life on earth, do you know that the sun can also be used to generate electrical energy. Solar energy provides tremendous benefits for humans because it is everywhere and this solar energy could be used by everyone for free. This may be one reason many people start using solar power. There are many reasons why people want to use this solar power. This article will try to explain the reasons so you can be sure that this is your best choice.And below are the advantages of using solar power:

Solar power energy is renewable resource. This means that this resource will not be exhausted while there is sunlight.
This energy is very friendly to the environment. Because it does not cause air pollution such as oil and coal.
If you use this energy in your home will be able to save on monthly electricity bills.
Solar cell modules can be placed anywhere as long as there is sunlight and not obstructed e.g. trees.
Easy in maintenance

There are many more other reasons that benefit. But that does not mean that this energy has no weaknesses Solar panels are very dependent on the weather. In cloudy weather solar cell panel capacity will be reduced about 30%.

blog claim

2009-12-22T03:31:00.000-08:00

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