Posts Tagged ‘environment’

Solar Panels – So how exactly does Solar Energy Work?

March 12th, 2010

Nowadays , most people want to save money on their electricity bills and one of the more famous methods is through using solar energy. So how exactly does solar energy function?

Power coming from the sun in the form of heat and light is abundantly available to everyone on Earth, even areas that don’t get plenty of sun. Did you know that the Earth gets more energy from the sun in an hour as compared to our whole human population is able to use in an entire year? With all that clean, renewable energy that’s coming from the sun every day, it’s worth it to find out a way to use it.

Active Solar

There are 2 various kinds of solar power you can use to power our houses as well as daily lives. The first is active solar power, which works via solar panels, which are set up with the use of photovoltaic cells. These types of cells are connected together in order to produce power.

Just how much electric output they produce depends upon a few aspects. One of these is actually how many cells are connected together in a panel, and just how many panels are being utilized.

The energy from the sun comes in the form of direct current, DC, rather than the alternating current, AC, which is used in your home. For this reason you will need ways to convert the energy. The easiest option would be to purchase a power inverter, which usually convert the sun’s energy into usable Alternating current elecricity. One more alternative would be to convert your house’s electrical needs to DC power, though this is in most cases impractical particularly in existing homes.

Thermal Solar Energy

There’s one more form of active solar power that makes use of thermal energy from the sun to heat water in your house. Devices that circulate and pump water help with keeping it warm. Subject to where you reside, solar power can heat water up to sixty degrees or more. Although this may not be ideal for taking a shower, it can be effective for dish washing or even doing your laundry. Solar power for heating water can cut your water heating bills substantially, and also may be used in combination with solar electricity.

Passive Solar

Passive solar energy uses the power of the sun without the use of any mechanical devices. When you’re out on a sunny day, you feel the warm sun’s rays, and this particular process is actually similar for heating your home. A passive solar house has south facing windows and also makes use of building materials which absorb the sun’s rays after which dissipates the heat into your home effectively. Passive solar can also be utilized to heat water in our house.

Making use of Residential Solar Energy

Solar electricity is a good alternative to powering your house with standard power grids. It’s currently being used in a number of residential, as well as business applications globally. There are lots of different methods for you to obtain a home solar power system, such as Do-it-yourself solar power kits which come complete along with diagrams as well as materials you need to construct your solar power systems for not much money.

You can also find solar energy experts that will come to your home, assess your needs, and also do all the work for you. There are also ways that you can get used solar panels for free, or through solar power grants or renewable energy programs in your area.

You can run your home on solar power even if there is little or no sun. Utilizing batteries to store excess energy, you can draw from them through the days when there’s simply not sufficient sun to be effective.

Learn more about solar power, then visit Nathan Henry’s site on how to choose the best solar panels for your needs.

Benefits of Having Alternative Energy Sources

March 10th, 2010

Are there any alternative energy sources that can fulfill all the demands on energy? Discussions on global warming bring up the issue of fossil fuels and their escalating prices. The concern about the availability of these fuels for future generations is also a common discussion. Many people hardly find it an easy choice when they are given a chance to use either conventional energy or the new sources of energy. Sources of recycled energy are many and how this energy is used varies from vehicles powered by bio-diesel, electric cars, to solar lighting etc.

This is quite often especially in the current global warming and the hiking prices of fossil fuels. For an average citizen, choosing between trying new ones and remaining with conventional energy sources is a difficult decision to make. Among the energy sources to look for are electric fueled cars, bio-diesel vehicles, solar energy and other types of recycled energy.

The world is in dire need of alternative energy sources to satisfy the rising demand on energy. Even if the prices of fossil fuels remain constant, the demand goes up every day. This demand is getting more difficult for the governments to satisfy. Alternative sources like nuclear energy are not widely utilized, so are alternative energy sources like wind. The great thing about wind is that wind mills work throughout to produce electricity so long as there is wind.

Several companies which produce cars have manufactured hybrid models while others have introduced cars that run on electricity and bio fuel. These models are not useable in everyday life due to the limited availability of bio-fuel coupled with the limited technology used on the models. However, these situations are gradually changing. Some countries actually have commercial vehicles that run only on compressed natural gas. BMW has introduced a car that runs on electricity and only runs on gasoline if the battery is out. REVA is another car manufacturer that produces electric cars only. Their latest models can go up to 100 miles on single charge, and the charging time is less than one and a half hours. These are the advancements that will encourage the people to make use of alternative energy sources.

Solar panels are also a wise invention. They charge the cells that store the energy so that it can be used later. You can use this energy for all your electricity consumption. The use of solar panels helps your household to have a more efficient energy source. There are also some options that warm up your winter and cools down your summers. The only costs that are associated with solar panels are just installation costs. Once installed, the sun will do the rest.

Several advantages of having alternative energy sources including saving on fuel prices, reducing the amount of poisonous emissions thereby contributing to the solution for global warming. Though these sources are expensive, their prices will reduce drastically once the market becomes big enough. In addition, they are a lot cheaper once installed.

If you want to see all of the Alternative Energy sources you can use in the World today, visit this site now.

Your Guide on How to Make Solar Panels

March 9th, 2010

With the economic difficulties of the last several years, more and more people want to learn how to make solar panels. Solar energy systems are being installed everyday around the world. In addition to lowering your energy bills, they are also friendly for the environment. You do not have to be a technical whiz to make your own solar panel.

Since the cost of purchasing and installing a home energy system can be quite high, many people have not made the move to solar energy. Ready made solar panels can cost thousands of dollars. The cost of the pre-made panels is what is causing people to want to know how to make solar panels. The supplies to build your own solar panel may run you around two hundred dollars, depending on where you shop. What is the main part of a solar panel? The main part of a solar panel is the photovoltaic cell. If you have a 200 watt solar panel, then you should have enough electricity to use in your home.

What Are the Components Needed to Make Solar Panels?

You will need the following items: glass, copper wire, photovoltaic cells, battery, wood and a soldering iron. It is important to look around when looking for photovoltaic cells. Not all cells are good quality. If you can make your own solar panels, then that is much cheaper than buying pre-made ones. Depending on how much solar power you want, you may need to make more than one solar panel.

You will also need a charge controller. This device regulates the amount of energy that is sent to each battery from the solar panel. Over charging the battery can reduce its life. So, you may need more than one, which may end up costing several hundred dollars, but that is much better than several thousand dollars.

Once you know how to make your own solar panels, you can make panels for other people too and charge money for it. You might even be able to find used materials, which will help keep your costs down. Lastly, you can save a lot of money on your home energy costs by knowing how to make solar panels. Why not fight back against the high cost of home electricity with this knowledge.

Want to find out more about how to make a solar panel, then visit Eric Moffat’s site on how to choose the best homemade solar energy for your needs.

Is It Time For Solar Powered Battery Chargers?

March 8th, 2010

Have you given any thought to solar powered battery chargers? You may be surprised at what you find out.

Benefits

Would you like to recharge your batteries for zero cost? The sun’s energy is available for free. Consider a solar charger for your batteries. You will not see a negative impact on the environment either. Almost maintenance free, they will give you long service.

There may be times when your power is off. In some cases, it could last for days. You need to stay in touch with people and get the local news. If you can recharge your cell phone, flashlight, and radio, it would be a big help. You can have help, utilizing the power of the sun.

Not so good

Some of the inexpensive models will not recharge very quickly. If you want faster, you have to pay for it. A one watt charger is considerably cheaper than a four watt. Even the more powerful units may not be as rapid as you like. Moreover, less sunny climates may not be a good place for this type of unit.

A lot to choose from

You may wish to recharge your remote control batteries. Maybe your flashlight gets frequent use. There are many purposes for solar household battery chargers.

You can also get them for your car. Many of these models will work on trucks and recreational vehicles too. They are simple to use in many cases. You simply place it on the dash and plug it into a cigarette lighter receptacle. However, they will not perform heavy duty tasks like jump starts. If you want more recharge power, you will need a more expensive unit.

Look for a model that will shut off by itself when fully charged. Some of the cheaper ones do not. You do not want to overcharge your batteries. This could be hazardous. A blocking diode prevents return of current. This will keep your charger from harm. Most of these units have this protection.

Most of the chargers mentioned here are portable. However larger ones for purposes like powering houses will be stationary. Upfront cost is usually a huge consideration for a solar powered house. Most people may not consider it within their budget.

Conclusion

Would you like a free source of energy for your battery charging needs? You might also wish it to be environmentally friendly. Cost will not be a consideration for most units. You will have something for your emergency kit. Do you get ample sunlight many days of the year? Solar powered battery chargers may be a good choice. But do not be in too big of a hurry for them to charge your batteries.

Check out more about solar powered battery chargers and take a look at these solar mobile phone chargers.

Why Wind Energy Is Such A Great Alternative

March 5th, 2010

As the conventional sources of energy are getting costly day by day, the alternative sources of energy like solar energy, wind energy are becoming very popular these days. Manufacturers have come up with wind power kits that can be installed anywhere at your house and can be used as a alternative source of energy.

A wind turbine can greatly reduce your monthly power bill. Even a small turbine can make a noticeable difference. However, if you are in the right location for it, wind turbines are available that can be used to meet all of your energy needs.

There are two important factors to be considered to choose a home wind power kits that are available in the market. The most important factor is the power that is required by your home.

It is quite obvious that in comparison to a smaller home, a large home with more appliances would necessitate more energy. Therefore it is important that you first calculate exactly how much electricity you would require in your home and then try and find the right wind turbine for yourself.

The next step is to figure out the typical wind conditions around your home. A wind turbine needs regular, steady wind in order to work.

If your location has a steady supply of wind then any power kit would prove beneficial for your home and can cater your energy needs whereas if there is no wind around your location then no matter how good the turbine is, it would be useless to install one.

Only after considering the above two points, start looking through the available options of wind turbines.

Many good turbines are available, but to find them you will likely have to shop online. Fortunately, that does make the whole process much faster and easier, as you will not have to leave your home and can find manufacturers from very far away easily.

If you want to learn more about wind turbines, you really need to check out Earth4energy review.

Green Energy” Is the Way To Go, But How Do Solar Panels Work?

February 16th, 2010

Solar energy is an excellent source that has the potential to greatly reduce environmental pollution. Unfortunately, it’s recognized as an “alternative energy” since it isn’t an energy source used by a majority of the population. One of the main reasons is that it’s still quite costly to manufacture. Right now, calculators and decorative outdoor lights are a couple of the most popular solar powered gadgets. The question remains, how do solar panels work? How does setting up a small panel, directed towards the sun, turn the sunlight into the electricity that keeps those pretty, bluish bright lights lighting up the walkway all night long?

Solar panels are made from special materials that absorb the sun’s rays and turn them into electricity that can power all sorts of electronic devices. Devices that we use electricity for everyday without thinking twice about could be powered by solar panels.

A budding technology used today for solar panels is photovoltaic (PV) electricity. It involves the use of specific materials that convert solar energy into electricity. The electricity can be used right away or it can be stored using DC batteries. Either way, we’ve got power!

These materials have been recently developed and they release electrons when prompted by sunlight. Another name for a photovoltaic panel is a “direct energy conversion device”. All of these effects take place on an atomic level without any moving parts.

Historically, only space age technology used photovoltaic panels. Space stations and satellites used them because they were a reliable source for continuous solar energy conversion. The extra bonus that using them in outer space has is that the sun’s radiation is at least 50% stronger than it is here on Earth.

Those living far from an electrical grid, more than a mile, are more likely to use photovoltaic technology, especially in residential homes. Power transmission cables cost way more to install than a photovoltaic power array would. If you’re a notable distance from an electrical grid, then it may be a good idea to consider solar energy for your power source.

But the question hasn’t been fully answered yet”how do solar panels work?”, and to better understand this we should know what solar energy is. Solar energy is made up of two kinds of radiation. The first and the best kind for solar panels to function is called “beam radiation”. Imagine you are laying on the beach in the middle of June on a bright sunny day. Feel the sun’s rays beating down on your skin. The energy you feel on your skin is “beam radiation”. A clear blue sky is a good day at work for a solar panel, but that solar panel needs to be properly placed in order to absorb the most direct sun rays as it can to achieve optimal results.

The other kind of radiation is “diffuse radiation”. This radiation is strewn all over the place (as its name suggests). On a cloudy day, it’s the primary radiation source for a solar panel. It’s the same thing if you’re relaxing under a shade tree diffuse radiation is what you’re going to get. Unfortunately diffuse radiation isn’t very strong and relying on it alone for solar energy isn’t practical.

Needless to say, a bright sunny location is the most desirable place to mount a solar panel. Most of Western America is solid as far as good sun for solar energy goes. Northern climates and coastal states stand to face some difficulties since diffuse radiation is what they get most of the time.

Solar panels are versatile in the sense that they can be set up to meet specific needs. 12 volt, 24 volt, and 48 volt DC systems are the most widely used. 12 volt solar panels can live well over 20 years and fall in the range of 12-14% efficiency.

Today’s production of solar panels consists of using supremely pure silicone semi-conductor materials. This is primarily what makes the use of solar power so expensive. Luckily there are new materials in the making and they’re particularly geared toward lowering the cost of production, thus lowering the cost for the consumers. Cadmium Telluride based solar panels are an example of new solar energy technology, and if these materials are successful in the final outcome then the price of solar panels should greatly decrease, making our environment that much cleaner as more and more people convert to solar power.

It’s unfortunate that solar energy is still considered “alternative energy”, but that’s all changing. If you’re considering a conversion to solar power then there are specific considerations to be made upon deciding, but it’s definitely a step in the right direction for our planet. The benefits outweigh the cost as far as our environment is concerned, especially the long term effects. Energy independence is a common goal for all, and if you just want to consider solar energy as a back up plan, then the decision is practically already made for you. Why not? The environment will benefit greatly once solar panels become financially available to all.

To find out more on how solar panels work get more information here.

Considerations When Mounting Solar Panels

February 16th, 2010

Once the decision is made to install solar panels, one must determine how to mount them effectively. The mounting system should be simple, reliable, and provide for all your performance needs.

Solar panels are often mounted on roof tops, because the roof structure is strong and already exists. If your roof is sloped in the right direction, then how convenient this is. And convenience is a legitimate player in any decision making process.

We would like to point out a couple issues with mounting solar panels on the roof, however. They are things to keep in mind for folks who live in northern climates, or who desire more optimal performance.

The first issue is the snow. When snow builds up on your solar panels, this will drastically reduce your electricity. And if your solar panels are on the roof, then cleaning them can be a little tricky.

As machine designers, we decided to tackle this problem common for us in the mountain regions. We don’t mind the snow, but the last thing on our minds is climbing the roof in Winter. So we developed the Rotek system, a simple mechanism for mounting solar panels that will improve performance and take on the snow.

In a Rotek installation, the solar panels are mounted on a ground based structure instead of the roof. This provides the clearances for adjustability, so that we can rotate the solar panels in any way. With this in place we can make seasonal adjustments to match the Sun.

In the Winter is when this adjustability can be a big help. The solar panels can be pitched more steeply or rotated toward the ground (negative tilt) to keep the snow off the surface. It is also good for giving the glass an occasional cleaning.

Whether for one snow storm or for a period of weeks, as long as there is snow on the ground you can leave your solar panels at negative tilt. As we have all witnessed, snow pack is highly reflective. Your system will continue to receive lots of beam radiation despite this abnormal tracking angle.

The second big issue to consider is heat. As our roofs accumulate heat, they will increase the operating temperature of a roof mounted solar panel. Performance tests have shown that higher operating temperatures will reduce the solar panel’s discharge current. This lost current output can be as high as 2 or 3 amps depending on the unit, which correlates to better than 20% energy lost against baseline operation.

Remotely installed solar panels will run cooler, and the electrical output will be better for this. There is fresh air to circulate on the back end (instead of a hot roof), and they can be located closer to the ground. The Rotek system, if used, would provide this additional advantage to your solar panel system.

So now that the decision is made to install your solar panel system, you must choose a mounting configuration. The roof mounted options are simple and in many cases a good choice. For those who want a little more performance and design flexibility, the Rotek system is a reliable and inexpensive alternative worthy of consideration.

Walter Hull is a mechanical engineer with expertise in solar energy power systems. For a limited time you can get his free report to solar energy from your own backyard.

Choosing Solar Panels For Your Home

February 14th, 2010

Many people now have worries over where their electricity comes from. We are constantly being bombarded by news stories of how we are having a negative effect on the planet and environment. Most of our electricity still comes from fossil fuels that add to the amount of carbon dioxide present in the atmosphere. If you want to switch your electricity source to a “greener” technology then you should choose solar panels for your home.

There are many benefits that can be had by using solar energy for your home. Of course there will be immediate savings to your annual energy bills but did you also realise that you may be also eligible for certain tax breaks and benefits from your local authority. Every state government is now trying to encourage citizens to switch to green practices. You may often be able to acquire a grant to cover the cost of the installation.

If you have a property or building that is not connected to the power grid or which is in a region that often has power cuts and shortages then solar panels can be the solution. There is no longer any reason for us to depend on a government or private company to provide us with electricity.

Some people still have the idea in their minds that solar cells are not so efficient. Though this was once the case, today the technology has changed dramatically. Now even on a cloudy or overcast day the photovoltaic cells will receive enough light to produce energy.

It is possible to run your home completely off solar panels or use the cells to produce a proportion of your needs. Either option is simple to plan and put into operation. The more panels you use the greater amount of electricity that will be produced.

There are professional tradesmen that can install the panels on your property or if you understand DIY it is not such a complicated job to do yourself.

The cost of solar panels is decreasing. To make it even more affordable you can craft your own do it yourself solar panels.

Power From The Sun – Free Solar Energy

February 12th, 2010

The Sun can be thought of as a giant nuclear furnace stationed in the sky. It is a tremendous source of solar energy, cranking out massive amounts of radiation each and every day.

This solar energy arrives to Earth as electromagnetic radiation, where it is absorbed and utilized in the biosphere in numerous ways. The Sun and solar energy it emits is arguably the most essential element to our existence.

This electromagnetic radiation, also referred to as light waves, includes an entire spectrum of different wavelengths. X-rays are some of the shortest light waves, where as radio waves are some of the longest. Solar energy falls in between, composed mostly of infrared waves, waves (colors) visible to the human eye, and ultraviolet waves. Life on Earth has heavily adapted toward these wavelengths that we receive.

Solar energy plays a primary role in all biological and thermal interactions on the Earth. With the presence of carbon dioxide, water, and solar energy, plants are able to produce energy through a process called Photosynthesis.

The Earths natural landscapes, they absorb solar energy and produce heat. It is the heat absorbed by mountains and plains that create local wind patterns. It is the heat absorbed by the oceans that creates the famous currents. Solar energy is responsible for thunderstorms, tornadoes, and hurricanes. It melts the mountain snows which form many of our rivers.

Solar energy is the catalyst for almost everything that occurs on Earth. It is as though the Earth has its own power plant, a giant Nuclear Fusion Reactor in outer space. It is a good thing too, because without it we would all be screwed.

Each and every day we should all be giving thanks to the Sun. It may be the most important element to our existence which we take for granted. Imagine if one day we woke up and there was no Sun? It would be like losing power at your home, but a million times worse. Probably most people would fall into an immediate panic.

So if theres one thing for sure, as long as solar energy is here humans will be here. Solar energy is responsible for almost everything that surrounds us, in every form.

With the recent advances in materials and industry, we now find ourselves with some new inventions for working with solar energy. It is now possible to make electricity directly from sunlight in a photovoltaic device. We can harness solar energy in absorption and concentrating collectors and store the heat.

We are entering a new age of energy generation for fulfilling our daily needs. We believe modern civilization has only just begun with these new age energies. Reaping the benefits of solar power and solar heat is in its infancy.

How practical is current technology for providing power to our homes? How much money will it cost, and how much will we save in the long run? What kind of new solar energy technologies are in development? We started out asking these same questions ourselves, and we are here as professionals from the Energy industry to present a few honest answers straight from the energy specialists.

To learn how to use solar energy as a budget source of electricity for your home get Walter Hull’s checklist on easy solar power from your yard.

Wind Power: Saving The Environment, One Kilowatt At A Time

February 11th, 2010

People are more interested in ever in doing what they can to protect the environment, as well as keeping an eye on their household budgets. It was once the case that people believed that the cost of implementing alternative energy technologies was too high to be a viable option. However, the costs of fossil fuel based energy supplies are on the rise and wind power and other alternatives are becoming more affordable – so a lot of people are considering the possibilities.

The relatively small investment made in installing a wind generator is something which more than pays for itself. The savings you’ll see on your energy bill alone will allow you to recoup your investment. You can also take advantage of tax breaks and other programs which are meant to encourage the use of alternative energy sources which can help to defray this expense.

There are programs offered by states and even some cities which can help you to save on the cost of doing the right thing for the planet. A wind generator will more than pay for itself over time anyway. Other than the savings you’ll see on your electric bill, you can sell any surplus energy to your local utility!

Electricity suppliers are required to buy the extra energy generated by consumers who use wind generators and other alternative energy sources who produce more than they can use. You’ll be doing your part by powering your home with clean energy and by selling the excess to your local utility; you’re also supplying clean renewable energy to other households in your area!

You can even make a little bit of money by using wind power, so everyone wins here. Wind generators are easy to install as well. You can find instructions which take you step by step through the process on installation, so there’s no need to worry. It’s easy enough for anyone to do and if you’re installing your generators in your roof, you should be able to generate enough energy to meet your home’s energy needs.

In case you ever need more electricity than you’re generating at the moment, you’ll want a backup supply. Leave your existing electrical system in place so that you won’t suffer power outages.

This does not mean that you are not truly making a difference though. Every day that you are able to run your home off of wind power, that is one day you are not using the energy produced by the electric company. Of course, the large the wind turbine you install, the more wind you will be able to capture and turn into usable energy within your home.

Of course, you don’t have to go out and get the biggest wind turbine on the market right away. Stay within your means and if you want to add more turbines or upgrade to a larger wind generator, you can do this and generate even more renewable green energy.

See how you can build residential wind turbines for your own house and save cash on your electric bill. Building your own wind power generators can save you thousands on the cost of buying one at the store as well and still generate a lot of power.