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PostHeaderIcon Solar Photovoltaics Panels: What kind of Battery I Should Use To Store Solar Energy?

Solar photovoltaics panels should be installed in the most effective way in order to provide maximum solar power efficiency. But if you are not tech savvy, you might be confused while installing this green energy kits at your home. So read on to discover the answer to the question:

Solar Photovoltaics Panels: What kind of Battery I Should Use To Store Solar Power?

In order to determine the type of the battery you will need, first you have to analyze the following facts:

1.     The Size Of Your Array.

In other words, you should consider the number of solar cells and current output.

2.   The level of your usage on a daily basis.

Determine what devices you are going to apply solar power for. It is also important when it comes to saving money.

After you have defined the above-mentioned moments carefully, you can choose the right battery for your needs.

If you are a newbie in this field, let me note that regular car batteries won’t do in this case though many people still use such kind of batteries expecting this will do good job. But in many cases, car batteries get worn out very quickly.

For solar power, you need a special type of batteries: “deep cycle” battery which helps to store as much solar energy as possible and for a longer time.

They come in different sizes, types, and storage capacity. So you’d better to advice the solar company you are going to buy the battery from.

Conclusion:

The best solution is to get a step-by-step guide on Solar Photovoltaics Panels Installation from A to Z.

PostHeaderIcon Do It Yourself Solar Power Tips For The Diy Weekend Warrior!

There are millions of people all across the world that are searching for new and improved ways to save energy and cut back on electricity costs. Do it yourself solar power these days is becoming increasingly popular for a wide variety of reasons. If you have a growing interest in a DIY solar power project for your home, these tips will surely set you on the right path!

People often think that if they create a large amount of solar panels or generators they will never have to worry about electricity again. If this is a new project for you, it is always going to be wise and start out small. You can easily generate enough power for your home if you just build a couple of solar cells. If you feel that you need to build up from there, you can get it done easily.

All of the materials that you need for your DIY solar power projects should be very inexpensive. You might be under the impression that buying the most expensive materials and tools will help you build better solar panels. The fact of the matter is, most of the materials that you will need might already be in your garage. Buy your solar cells used and make sure that you stay away from broken cells. These are cheaper, but they are not always cheap to fix up.

In order to prevent sun damage you should ensure that your materials are UV proof. This means that they will not warp or get ruined while in the sun for long periods of time. The cost might set you back a little bit, but it will save you from having to replace your materials in a few years because of sun damage.

Along with protecting your panels and materials from the sun you should also think about rain damage as well. Most of the materials that you will find for DIY solar power will be waterproof or at least water resistant. As long as you employ these materials with your panels and generators, you should be in very good shape.

Overall, all of the products and materials that you buy to construct a few panels should cost less than $200. If you think that you can buy panels that are all ready to go for this price, think again. The fact of the matter is, readymade versions of these panels can easily cost you over $1000 to get a couple of panels completed.

After everything has been put together make sure that you take the time to keep your panels clean. The panels are more likely to generate and store more energy for your home when they are cleaned on a regular basis. Specific cleaning supplies can be purchased online in order to get the job done.

When it comes to saving money in hard times, you can use nature and the sun in order to power up your home for years. Take the time to look around and see how much a project like this is going to cost you as a homeowner. If you need a little bit of help employ the use of simple step-by-step kits that will help you get everything completed!

PostHeaderIcon Solar PV Panels and the Derating of Out Put

Name plate power output details

The capacity of a Solar PV Panel is as what is given in its name plate. The output will invariably be given in DC power output in watts. The watt output of an array of PV panels has to be converted to a practical unit which is kw (DC) and for this purpose the total watts (DC) of the PV module array is added up and divided by 1000. Sadly this out put too does not give an indication of the ultimate power available to you for useful work due to several factors which derate the output.

Affect of location of the building and the name plate capacity

The name plate detail of generated DC power is measured at Standard Test Conditions (STC). Now this does not tally most of the time with the highly variable conditions of a particular locality of an average building.

The STC is laid down simply to arrange a common platform for the sake of convenient comparison. Strangely two different STCs can exist depending on the country and authority responsible. A widely used STC is the standards laid down by the NRFL laboratory of the US Department of Energy.

This standard specifies:

A Solar Irradiance of 1000 watts/m2 A module (panel) temperature of 25 0 C A default PV Panel surface area of 35 m 2 A default DC Power output of 4 kw

Local Factors causing derating

The numerous component derate factors are as follows.

PV module nameplate DC rating – The name plate details do not coincide with field measured readings due to degradation and other reasons. Combined Inverter and transformer efficiency – The conversion of DC to AC is a combined action of the inverter (which is a solid state device) and the transformer and naturally there are significant power losses during the path from the PV Modules to the building distribution board. Mismatch – The manufacturers of the PV modules indicate in their catalogues a performance tolerance. The performances of each module vary within the limits of tolerance and when interconnected may not produce the total name plate output. Diodes and connections – The diodes ensure the flow of current is unidirectional in the PV panels. Also the multitude of electrical connections imposes resistance causing energy losses. Both these contribute to derating of a system. DC wiring – These account for the resistive losses in DC wiring between the PV panel installation and the inverter. AC wiring-The derating occur due to losses taking place in the AC wiring between the inverter and the grid connection. Soiling – Dirt such as dust, snow, bird droppings, etc settling on the PV modules derate the performance of the installation. System availability –The down time of the PV array and that of the utility authorities due to maintenance etc. affect the output of the system. Shading – The PV array performance is easily affected by surrounding buildings, vegetation etc. Sun-tracking –When a tracking mechanism (generally not used in small capacity installations due to cost) is employed, the precise orientation of the Solar Modules is important to maintain the optimum efficiency. Age – Over the years the efficiency of a PV array is affected and in about 10 years of operation a derating of about 10% may occur.