Solar Power Environment Friendly

          The issue of global warming is gaining wide acceptance with more and more countries making the endeavor to delay the catastrophic effects of this phenomenon. Today, scientists and environmentalists are offering people, across the world, alternatives that can be used in their everyday life.

Using solar power or the power of the sun’s heat is one such attempt. Solar energy is considered to be one of the most powerful forms of all energies on earth. It is derived from the sun, which has been producing energy for billions of years. Solar energy reaches the earth in the form of solar radiation and is converted directly or indirectly into various forms of energy like electricity and heat.

In spite of it being one of the primary sources of energy, solar energy has some drawbacks. They are:

1. The irregular and variable manner of its reaching the earth's surface
2. There is a need for a large area to collect it

Solar energy can be used for multiple purposes from heating water for use at homes to drying agricultural products and even generating electrical energy.

Trivia: British astronomer John Herschel used a solar collector box on his expedition to Africa to cook food in the 1830’s.
Some of the advantages of using solar power or energy are:

* Solar power is a renewable resource and it will take another billion years for the sun to disintegrate if ever it does. As a result, solar energy will be able to provide us with enough power to carry day-to-day operations like electricity for homes, cooking etc and can be used for commercial applications as well.

* One of the biggest advantages is that solar power is non-polluting. As compared to any other energy resource like oil or coal, solar power will not emit greenhouse gases into the air and hence is considered environmentally friendly.

* Solar power is for free. As compared to oil or coal, which you have to buy, using solar power will cost you much less or almost zero in the long run. Initially you might have to invest a little on the solar panels or cells. The maintenance of solar cells or panels is zero. Apart from this, the life of the solar cells is much longer and comes with a lifetime warranty. You can use solar cells to heat water or even drive a car. The solar cells can convert light into electricity and are often known as photo-voltaic cells.

But today, things are different and the situation at hand is grim. You can use solar energy for various purposes. Some of the uses of solar energy by organizations and individuals are as follows:

1. Companies are trying to implement photo-voltaics in electric utilities. Photovoltaic is a process through which solar energy can be converted into electricity directly.

2. Electricity can also be produced directly from steam generators using solar thermal collectors that can heat working fluid.

3. There are many companies globally who have started to implement Solar PV modules, which can easily be retrofitted into existing roofs. Solar PV modules can be connected to a buildings grid supply for generating electricity, which can be used by offices on the premises.

Photovoltaic Energy
Photovoltaic energy can convert sunlight into electricity by using photovoltaic (PVs) cells. These cells are commonly known as solar cells.  Photovoltaic cells are non-mechanical devices that are made primarily from silicon alloys.

Sunlight is basically composed of millions of different particles of solar energy also known as photons.  Each photon contains a different degree of energy that corresponds to different wavelengths within the solar spectrum.

When a photon strikes a photovoltaic cell, they will either get absorbed, reflected, or pass right through.  The photons which get absorbed can provide enough energy to generate electricity. When the required amount of energy gets absorbed by a semiconductor, then the electrons get dislodged from their material atoms.

Photovoltaic cells are being increasingly used in driving solar powered products. Here are some of them:

Solar chargers
* These chargers can charge some of the most powerful electronic devices like mp3 players, cell phones and digital cameras.
* Some of the top companies of the world use them for their electronic devices like Nokia, Motorola, Samsung, Sony Ericsson, and Palm/Treo.
* These chargers consist of folding solar panels of different outputs like 6.5 watt, 12 watt and 25 watt.
* They are made with high efficiency solar cells that are compact and light in weight.
* These chargers powered with solar cells can recharge lanterns, flash lights, cell phones, satellite phones, GPS units, MP3 players and many others.

Solar Modules
* The solar modules are mostly he mono-crystalline silicon and are composed of composed of solar cells that have an average conversion efficiency of 15% or more and comes with solar glass and Tedlar (TPT) back sheet and EVA sheet compounded from fluoric-plastic and dacron.

Solar Power Radio & Crank Flashlight
* Multi-function solar radio features and can work on MW/FM/SW1/SW2                                 MW: 530-1600KHZ/FM: 88-108 MHZ/SW1: 3.8-10 MHZ/SW2: 11-17 MHZ
* The solar radio works on built-in single solar cell.   atj

Solar Panels Economic Efficiency

The last example of this specific phenomenon was apparent was in the early 70's, when there was a crude oil trade embargo and hence, no gasoline. Substitute energies began to pop up here and there with many people jumping on the band wagon. But, gasoline soon returned in plentiful supplies and unconventional energy sources fell beneath the average consumers radar screen again. Now, in 2009, the common consumer is seeing petrol prices move higher and found a realization that global warming will be affecting finances soon. Substitute energy is back in the sentiments of the ordinary consumer and, maybe, this time for good.


Where did solar go?

Solar power for the home was a big seller during the energy crisis of the 70's. Many houses found tri-pods of solar panels on their roofs gathering what power they could. These units were found mostly in environmentally sensitive Arizona, but soon they were found across the World. Unfortunately, the solar power cell of the 70's just wasn't all that cost-effective and cost quite a bit to put in and maintain. As fossil fuel returned to the marketplace there was diminutive need for solar cells in a time of flagrant consumption. But the idea of solar energy was a good one and many trailblazers understood that it was a good idea that had yet to find its time. Solar panels never went away; they just slid back into the laboratory to await solar panel 2.0.


Solar is back and ready

Today's solar panel is not your father's solar panel. Depending upon which type of energy you care to generate, electricity or hot water, today’s solar panel has come a very long way in the form of photovoltaic's and will go further still. These cells, when combined into panel form, turn the suns rays (so-to-speak) right into power ready for use. They have also become exceedingly efficient, more environmentally sound and less expensive. Today’s solar panel will sit almost anywhere and is quickly finding itself being turned into a panel the thickness of a nano particle. Solar power technology is running at extremely fast pace and driving costs down to an affordable level.


Who's using the panels?

As mentioned, it takes a change in the purse strings to see a marked change in a consumer’s behavior. With a technology and paradigm shift on the order of solar panels it requires a solid leap forward in panel efficiency, costs of panels , associated elements and an increase in existing costs of fuel. When these factors reach critical mass solar panels start to show up, not at the consumer level, but at the corporate and industrial level. This is simply because business moves its money where the costs-over time-are less. This is just good business. Solar panels are now, as in this past two years, become more cost effective for industry to use then to not use them over time.


Why solar panels now?

Solar panels are now being used primarily because fuel costs are just too high to ignore in favor of a new technology that is worth checking out. Companies have available empty roof space and the choice of trying something on a larger scale to see if it works versus continuing to pay higher fuel bills and environmental costs. The whole concept is extremely self serving. There is no environmental consideration involved. If the company doesn’t use solar panels they have to pay fuel costs and air clean-up expenses along with variable fuel charges. They try out the solar panels and see if they work now. If they do, the company can; commit to a full solar panel program with even more efficient solar panels, significantly reduce fuel costs and almost eliminate air cleaning needs along the way.
There is little environmental about it. It’s just good business. After industry gets rolling, solar panel costs will drop like a stone and the consumer will jump on board because…it's just good business.   atj

How Solar Thermal Works In Your Home

          Given energy concerns these days, most homes are now designed to take advantage of passive solar heating concepts. Solar thermal is a big part of this process.
Getting a little free heating can go a long way on your utility bill, particularly over the life of a structure. Passive solar heating is the methodology used to achieve this goal. It is a process wherein a home is built or upgraded in such a way as to catch and contain as much of the sunlight in the form of heat as possible. To effectively use solar for heating, thermal mass is a subject you need to understand.   
Thermal mass simply refers to any material that absorbs and stores heat. In this case, we are obviously talking about material that stores the heat inherent in sunlight and disperses it at a later time once the sunlight is no longer hitting it.

          You may not realize it, but your home already has thermal mass producing heat. Any material exposed to the sun, furniture, floors and such, acts as thermal mass. Unfortunately, it is usually on a pretty small scale.
Often called intentional thermal mass, a passive solar home will have strategically placed materials that are very efficient at absorbing and radiating heat. While this may sound complex, it really is not. The materials include items such as bricks, tile and masonry. Adobe and clay materials also function well in certain situations.
In a passive solar home, you need the thermal mass in the interior of the home. Strategically placing tile and brick in areas below windows that receive significant sun during the day will often do the trick.

          Depending on your heating needs, the amount of thermal mass you use will vary. In colder climates, it should be used in bulk while homes in Arizona need only nominal amounts.
One common misunderstanding regarding thermal materials refers to their color. Logically, it would seem to make sense that the materials need to be dark since dark colors absorb more heat. This is not particularly true in passive solar. It is the material, not the color, that makes the difference. Bricks can be just about any light color, but not white. This may sound insignificant, but it can be a major benefit if you want to avoid a dark, gloomy interior in your home.
If you are trying to harness the power of the sun for heating purposes, you need to get a good grasp of the thermal products you will use. This should give you a head start


          Given energy concerns these days, most homes are now designed to take advantage of passive solar heating concepts. Solar thermal is a big part of this process.
Getting a little free heating can go a long way on your utility bill, particularly over the life of a structure. Passive solar heating is the methodology used to achieve this goal. It is a process wherein a home is built or upgraded in such a way as to catch and contain as much of the sunlight in the form of heat as possible. To effectively use solar for heating, thermal mass is a subject you need to understand.
Thermal mass simply refers to any material that absorbs and stores heat. In this case, we are obviously talking about material that stores the heat inherent in sunlight and disperses it at a later time once the sunlight is no longer hitting it. You may not realize it, but your home already has thermal mass producing heat. Any material exposed to the sun, furniture, floors and such, acts as thermal mass. Unfortunately, it is usually on a pretty small scale.

Often called intentional thermal mass, a passive solar home will have strategically placed materials that are very efficient at absorbing and radiating heat. While this may sound complex, it really is not. The materials include items such as bricks, tile and masonry. Adobe and clay materials also function well in certain situations.

In a passive solar home, you need the thermal mass in the interior of the home. Strategically placing tile and brick in areas below windows that receive significant sun during the day will often do the trick.

          Depending on your heating needs, the amount of thermal mass you use will vary. In colder climates, it should be used in bulk while homes in Arizona need only nominal amounts.
One common misunderstanding regarding thermal materials refers to their color. Logically, it would seem to make sense that the materials need to be dark since dark colors absorb more heat. This is not particularly true in passive solar. It is the material, not the color, that makes the difference. Bricks can be just about any light color, but not white. This may sound insignificant, but it can be a major benefit if you want to avoid a dark, gloomy interior in your home.
If you are trying to harness the power of the sun for heating purposes, you need to get a good grasp of the thermal products you will use. This should give you a head start.   atj


Powering With Solar Energy

          Hi-tech ways to capture enough sunlight per day every day to power everything in a home or business hasn't been discovered yet. The current cost of solar panels can run into thousands of pounds, which would require the panels to produce electricity for years without maintenance in order to see a return on investment.
Many people use solar panels, which can be placed on a side of a roof to attract sunlight during the day to heat a small number of rooms and water. Solar panels can be purchased at a number of locations throughout the UK, as well as online. Panels do a great job of helping families and businesses to conserve energy. Hopefully, solar panels will become a part of daily life, in order to prevent the disappearance of natural resources and to maintain energy conservation.

          In the recent 2006 Budget announcement by Gorden Brown, millions of pounds have been allocated to helping homes and businesses take advantage of renewable energy and the benefits that it brings. This is a welcoming strategy by the government. More and more homes are also attaching mini-wind turbines to their homes to boost the electricity generated by solar panels, British Gas (Centrica) have recently been looking for volunteers to pilot this with.
Developing countries with sunny climates such as Africa and Asia are the perfect place to take advantage of this renewable energy especially in rural areas that are not connected to the national grid for electricity. There needs to be a commitment from the G8 and other government around the world in providing funds to achieve this.   atj

Solar As An Energy Platform

OVERVIEW:

With renewable energy all the rage these days and fossil fuel costs soaring, solar energy is in the news. Here are some thoughts about solar as a viable energy platform. 

Energy is an important topic that is on many peoples minds these days. With the rising costs of fuel and electric power, many households and individuals are considering alternative power sources. Solar is one of the more cost effective and biologically sound alternatives available.

One of the most interesting aspects of solar energy is how little of the energy production on the planet comes from the harnessing of the energy of the sun. In fact, only 0.1 percent of the power used today comes from converting sunlight into electrical current. It would be possible, however, to obtain enough power to run all of the worlds energy needs using solar energy. If more people were willing and able to install solar collectors on their homes and even their cars when technology gets to that point, solar energy could more than cover the Earth's power needs for transportation and housing.

Another of the interesting aspects about solar energy is how much solar energy is worth, or to put it another way, how much money you can save using solar energy. If you have a roof that is 1000 sq ft large, and you install solar panels on this roof, you could conceivably save as much as $6,460 dollars a year over the cost of oil heating.  Unfortunately, the cost of installing the hardware needed to obtain the amount of power to save this money would be between $20,000 to $50,000; cost prohibitive to most home owners. These costs, however, are offset by tax incentives, rebates and net metering concepts in most states. While the upfront cost can be prohibitive, the savings over the life of the product are many times the initial burden. 

One of the major hopes for reducing the cost of solar is found in Asia. Specifically, China is facing up to the fact it has massive pollution problems and is investigating renewable energy solutions. Working with American architects and developers, China is building entire communities that are made and powered by recyclable resources. Homes are made out of straw bales and powered with solar and geothermal heating. Given the sheer size of China and its population, the vicious pollution problem has spurred development in the renewable fields. With such a massive focus, it is hoped that the Chinese will develop more efficient, but less costly versions of solar energy for use around the world.

When considering solar as a platform, the most important aspect to keep in mind is that we have barely tapped it as a resource. If we can make systems that are more efficient and cheaper, the future of solar will be bright.   atj

Prime Reasons To Harness Solar Power

Very simply put, ‘Solar energy’ is energy that is derived from the sun. Our sun is an abundant source of energy; it gives of heat and light. The sun’s been revered by several cultures of the past and even by a few cultures still present today. The ancient Egyptians even worshiped the sun as a God.

        All said and done, it was not misplaced respect; the sun certainly is an abundant and limitless source of power, at least for several generations to come; the merits for using its solar energy are numerous.

It’s free

        Every morning with each dawn, the solar energy released by the sun comes filtered through our atmosphere providing light and helping to radiate heat. This has been happening for millions of years yet it is only recently that we have begun to capitalize on this abundant source of almost infinite power.

        In the past the Greeks and the Egyptians have been known to harness the power of the sun to heat whatever they wished to by concentrating its radiation.

It’s non-polluting

        The energy from the sun is clean and free of any pollutants; unlike various sources of energy present today like petroleum or organic fuels that leave back residues and often leave back harmful gases when utilized to create energy.

Extremely reliable 

        The sun has been burning for roughly four and a half billion years now and is likely to burn on for another four to five billion years to come. That’s definitely more than our lifetimes and certainly more than several generations of the future. Every morning it promptly shows up and vanishes for the evening while it lights up another portion of the globe.

The saying “as sure as day” did not come about for nothing; assuming the sun is shining brightly, depending on which part of the globe you are you can harness the energy of the sun to either store it away or utilize its energy in a different way.

Limitless

        There is no restriction on how much energy we can use from the sun. Apparently, the amount of energy that comes from the sun every few minutes if successfully harnessed can power the entire United States of America for a whole year. If we were only able to harness the immense energy of the sun we would be able to solve all the worlds’ energy problems.

Why ???

        Ever wonder why no one thought about this earlier? How come if there’s so much energy just lying around, we simply cannot seem to efficiently harness it? How it that so much of the sun energy seems to go totally unnoticed and is ultimately wasted?

        Well one of the reasons that this wonderful power reserve is generally wasted is the fact that the sunlight that we actually receive is so thinly dissipated across the earth to be able to contribute substantially enough if we try to harness it.
For us to be able to actually harness the power of the sun we have to be able to manipulate, focus and store the sun's energy. While this may seem simple it is easier said than done; So far we have only managed to develop three partially successful means of collecting solar energy.

The Reflection Method – Mirrors / Parabola

The reflection method is based on the concentration of the sun’s rays through a single or a set of mirrors onto one point and then utilizing the concentrated heat energy that is produced for out need. A parabolic mirror much like a dish antenna can be used to capture the sun’s rays and focus them on a single point.

The radiation method

This is the principle behind the solar water heaters. Painted black pipes sandwiched between two layers of glass, have water inside them that is heated thanks to the rays of the sun.

Solar panels

A more recent invention the ‘solar cell’ is composed of treated silicon crystals, which when hit by the rays of the sun knock electrons out of their orbits and thereby create a void that needs to be filled by electrons from the other silicon crystals, this creates an imbalance of electrons and hence a flow of current which can be either immediately utilized or else stored away in a rechargeable battery.

What’s stopping us?

        Despite the apparent benefits of using solar power it is most unfortunate that there are very few solar power plants around the world. Sadly, with today’s level of technology, cost and reliability are two major factors that are still hurdles in the way of mass usage of solar energy.

        Technological limitations dictate that the most efficient solar cells created today are still not capable of generating enough power to be commercially viable without occupying huge surface areas. Furthermore, reliance exclusively on solar cells in not yet practical,  for if there were to be a cloudy day it could reduce the amount of electricity generated and that would be disastrous for those people completely reliant on that energy.

On the bright side, constant innovation and research on solar energy is resulting in much more efficient solar cells that are a fraction of the size of existing cells and churn out much more power. For now they are still expensive, but not far is the day when they will be affordable and available to the common man. atj

Solar Power Worth The Hassle?

         In this piece of work that I am about to commence with I will discuss whether or not it is wise to convert or at least supplement your home electricity source with solar power.

        This is a worthwhile undertaking because there are many things in this world that are billed as cost or time saving and are actually the opposite when looked at with the right measurements or perspective. So the question is, “is solar power what it claims to be a clean source of energy that is cheaper than other forms, or is it merely a fad that makes people think that they are being kind to the environment or cost effective.”

So let’s talk about the claims.

First: A clean source of energy. When you think about it the energy from the sun is about as clean and as natural as you get. There is no chemical reaction that creates an undesirable waste product, there is no burning, no smoke, no extra gases formed. So in this way—yes it is clean. But you also have to look at how you harness that energy. If you have to create undesirable waste such as plastic or other materials that can’t be naturally broken down; or you have to use energy that is not clean such as coal or other fossil fuel burning to create the product than you are at least decreasing the benefit of the clean power supply.

       
        In the case of solar power you do have to create the cells which are made of plastic as well as the wiring and the housings for these cells. So there is some unseemliness to the cleanliness of this power source. The question is, does the benefit outweigh the costs? And in the case of solar power, it does seem that if the units are maintained and last for a long time they eventually will come out ahead. Not like cloth diapers which would, it seems, be a lot better for the environment than their disposable counterparts from huggies. The fact is that the bleach used to clean the cloth diapers is much worse for the environment than the disposable diaper which will eventually (though it takes many years) break down almost entirely.


Second: Solar power is a cheaper source of energy than other options. This again seems very true on the surface. After all everyone has access to the sun and the sun doesn’t charge does it? But then again the solar cells cost quite a pretty penny so it will take a while to pay them off with the cost savings. And you will have to maintain them paying a technician to come out and fix the units with expensive parts. So is it cost effective? Well again it seems as though over the long run yes solar power is a way to cheapen your energy costs considerably.  Not like recycling which boasts of a way to save the environment and cheapen the cost of those materials that are being recycled. Well both may not be as true as stated prompting many communities to “recycle” the materials that they collect from well meaning residents right into the trash.   atj

The Use of Solar Power-Six Great Reasons

        Perhaps you are happy with the status quo of today. Perhaps you feel all is fine and you don’t feel the need to change a system that’s worked for over a century. If you do, consider a few of these benefits to solar power and you may just recognize its potential in a somewhat more responsible, yet selfish, light.

I don’t care about the environment?

1. Care for the Environment

        Perhaps everything in the world is fine with your life. The last thing you care about are trees, fresh air and clean water. Heck, the water shows up every time you turn on a faucet, the heat comes on when it’s cold, the light switch brings you light. What’s there to worry about? Consider that this is just the problem. If you don’t care for the environment, the faucet may not bring you clean water, the heat may not go on and the car certainly will not start. If the environment is kept clean and left to do what it was intended to do, everything will continue to work fine. But get in its way and everything you thought was fine won’t be for long.

One way to accomplish the goal of keeping all the comforts of home working properly is by using other sources of power generation like the sun, not generating nasty things that get in the way of the environment doing its job. Current sources of power come from dead things like old forests gone millennium ago. Environmentally responsible power, heat and transport come from living or energized things like water and oxygen molecules. Sun can be turned into electricity and used to power your car, heat your home and generate your light. But to make the process work, you need to be able to see the sun, which means caring for the environment and not getting in its way.

2. Cost savings

        One of the best things about caring for the suns ability to do its job is that it saves you money in the long run. Once solar systems are purchased and installed, they cost little if anything to operate. In most instances, the government will even help to pay for the upfront costs of installing the system through tax incentives. Additionally, power companies in most regions are required to pay you for energy that you have generated and not used. Yes, you read correctly, the power company will pay you!

3. Profitable

        In most instances, 70% of the northern hemisphere can generate enough solar power to run and heat their homes with existing solar systems. This means that whatever is left over goes back to the power grid if you so choose. Just think of your power meter running backwards. The extra power you need for that cloudy day is stored in ever more efficient batteries. Most current users indicate that the use of solar systems only takes a little thought in power management.

4. Off the grid


         Depending upon how you feel about the topic, one of the better reasons to use solar power is that you can take yourself off the “grid” so to speak. Many people don’t enjoy being a part of the social collective that is interconnectivity. Going solar takes you away from this one aspect of community and puts you closer to self reliance.

5. Versatile

        Even though the solar power generation systems of today have come a long way to providing power, heat and a host of other services there is a long way to go. This is not to indicate, however, that solar power is not currently versatile in form and function. Solar panels can currently be formed into thin sheets to for car top electric powered cars. They can cover suburban rooftops and not be noticed, unlike those 1970’s units. Costs are also coming down almost as fast as the flat screen TV’s of today. Flat screens that solar power can power up through the use of a process called photovoltaic’s.

6. Personal responsibility

        Past the cost savings and environmental benefits that solar power brings you should consider using it because you are part of a larger social order that will procreate. The human species has not been around for all that long and is doing its best to end its run in one way or another. If you would like to give your children’s children a better shot at continuing the human species run on this planet solar power is one small contribution that you can make all by your little self..atj