How Solar Energy Works

How Solar Energy Works
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Thursday, June 25, 2009

An Overview on the Interesting Facts about Solar Energy

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An Overview on the Interesting Facts about Solar Energy

There are lots of interesting facts about solar energy. Educating yourself about this will prove to be beneficial in the long run. You can share the information to your loved ones. You can teach them of ways on how they can help to conserve the energy. You can also do your share to help this method to advance if you are a genius in the field. But if you are an ordinary citizen who only wants to enjoy, then feast on. But remember that you also have responsibilities to the environment that you must accomplish in order to do your part in the whole scheme of things.

The Facts that Matter
1. Solar radiation makes it possible for the energy coming from the sun to be used as power source and energy that can in turn be used for many purposes. The technology on this aspect is characterized in two ways. They can either be passive or active. This will depend on the methods that are used to get, convert and allocate sunlight.

What are active solar techniques? These utilize pumps, photovoltaic panels and fans to renovate sunlight into useful resources. These aim to increase the energy supply that is why these can also be referred as supply side technologies. The passive solar techniques, on the other hand, use only selected resources with constructive thermal properties, utilize the kind of spaces that can circulate air naturally and apply the position of buildings and structures towards the sun. These will lessen the need for other sources and can also be referred as the demand side technology.

2. Solar energy has influenced many factors that surround people. This can be referred in planning and designing buildings. This process can be rooted back at the early days of the architectural history. The Greeks and the Chinese first used such factor in building and constructing their architectural pieces and on their planning methods.

3. Solar energy is also being utilized by the agricultural sector because they rely heavily on its benefits in order to gain more harvest. They developed ways in order to plant the kind of crops that will grow according to the amount of sun that they will be getting for the season. This can also be used to dry the crops, pump water, brooding of chicks and to dry animal manures that can later be used as fertilizers.

4. On seasons like the Little Ice Age, fruit walls were used by French and Chinese farmers to be able to collect and store solar energy to help them keep the plants warm and to speedy up the process of ripening of fruits. These walls serve as the thermal masses. The fruit walls that were first developed were perpendicular to the ground and faced the south direction. Over time, innovations were done and slopping walls were used to gain more advantage from the sun.

5. To convert the solar light into heat, people have developed greenhouses. These enable the production and cultivation of specialty crops all year round. Such innovation made it possible for crops to be produced in untimely seasons and in places where you think that those plants won’t grow.

And these are only some of the interesting facts about solar energy. These give you a good peek at how wonderful nature is and how people have developed ways to use it to advance in many aspects of their lives.

Tuesday, June 23, 2009

Why should you chose to use solar power?

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Why you should choose to use Solar Power

Life on earth is fueled by the light and heat from the sun. Approximately, 3850 Zettajoules (ZJ) per year is the total amount of solar energy available to the earth. The suns energy travels to the earth by way of electromagnetic radiation like radio waves but the frequency range is different. Some of this energy is absorbed as it comes thru the atmosphere. Heat and light are the primary forms of solar energy.
Solar energy has many advantages over conventional energy. The energy from the sun is free the only expense is from recovering the energy. The cost of recovering the suns energy is recovered faster than with conventional energy. The recovering units don't have to be connected to natural gas or power grids, they stand alone. The supply of solar energy is limitless. It has no emission gases to harm the earth's atmosphere.

There are several ways to recover solar energy:

Focusing collectors: This has a movable mirror, known as heliostats, is pointed to the sun and can provide a temperature around 4000 degrees C. This degree temperature is used for a solar furnace in industries and research. These solar furnaces don't contaminate our environment. The heliostats can focus the energy to a boiler that turns water into steam. To generate solar electricity, focusing collectors can be used.

Flat plate collectors: These collectors can be used in schools and homes to provide heat using water that is heated in pipes. They cannot provide as much heat as the focusing collectors because they are smaller.
Solar distillation: Solar distillation is about the same as flat plate collectors but provides distilled water instead of heat. Sea water is put in tanks or ditches on the roof of a house and the heat from the sun heats and evaporates the water and turns the water vapor into liquid water that is distilled.

Solar electricity: By using focusing collectors and Photovoltaic cells, made of thin pieces of semiconductors, convert radiation from the sun into electricity.

Solar energy would not be affected by the supply and demand of fuel for it is free and it doesn't polute the atmosphere. It is natural and pure. It would provide us with better health.

There are several ways that we can work together in order to get the best of natural and renewable resources. Using solar power is not only helpful but it is inspiring to others. The expenses to using the solar energy are less than the cost of using other resources for heat, including electricity and gas. When you use electricity and gas you may have a low cost up front but in the end you end up paying for it from now on. With solar power you may have an initial investment to turning your home into solar power but after that you have no reason to pay for it any further, unless you use electric or gas for a back up heating source. Solar power was available yesterday, it's available today and hopefully it will be available for us in the future.

Monday, June 15, 2009

Solar Power for the RV

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Solar Power for the RV

Everyone likes to get away for the weekend and when you get a chance to there is a lot of fun in taking a recreational vehicle, or RV, to go camping in. Your RV could be a pull behind camper or a camper that you can drive. What ever you use RV's usually run off of electricity from another source or they have battery powered lights. When you use electric hook up in a camper you may want to consider turning your RV into a solar powered RV and never worry about electric hook ups again. Enjoy your vacation anywhere without restrictions.

Once you hook up to a power source you are able to have the comforts of home by turning on and off the lights and using the bathroom. If you cannot access a power outlet you may use a generator to supply power to the camper. These generators are nice in a pinch but you have the problems of running out of fuel to keep it going not to mention the noise that it makes. If you want to turn your RV into a solar power RV it is simple to do and with little expense. There are a number of different products that you can buy to make camping fun and modern with little or no effort.

You can mount a solar panel to the RV camper in order to charge your energy in your RV. This is done by purchasing a solar panel mounting bracket that your solar panel will set on. You can buy RV solar panel kits that include both the mount and the panel. Once it is installed you can power your camper and batteries using the suns warmth that was already there and it doesn't cost you an arm and a leg to do so. Run your solar panel wire to the battery compartment and you are ready to go. Each solar powered kit offers different wattages and sizes so you can select the right one for your RV size and what you will be using.

When you are out on a camping trip you can feel good knowing that you can go anywhere you need to go. Your solar panel on top of your RV will also withstand any type of weather and because a camper is so small it won't take much solar power to operate the RV. Another hot solar powered item to buy for your RV is called the Solar Power Ventilator. This provides the perfect ventilation system for small quarters, such as RV's. When it is hot in the summer or anytime that the sun is shining it doesn't take long for the RV to heat up and become very uncomfortable. The solar power ventilator will run all the hot air out and circulate the air with clean fresh air.

When you take the RV out you want to enjoy your time in the great outdoors without giving up the fact that you have to rely on a power source or go without power completely. If you have to go without power you may find that it is inconvenient and hard to do, especially when you purchase an RV because of the way that it is convenient.

Tuesday, June 9, 2009

Complete Guide To Solar Energy

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The sun is a great source of energy. It would be great to use solar energy in your homes especially nowadays when the prices of oil and gas continue to increase. Because of the high fuel and gas prices, more and more people are experimenting on the use of solar energy in their households in their attempts to minimize the costs of basic utilities.

The sun’s energy can be harnessed in different ways depending on how you would utilize the end product. There are so called solar collectors which are placed on the roof tops or used in buildings. The main purpose of these solar collectors is to provide heating and even ventilation for the houses and buildings. These collectors harness the sun’s energy by magnifying the sunlight several times and transferring that heat to air or water. That heated air or water is stored and will provide the building or home heating and hot water whenever needed.

The only problem here is that not all places have equal amounts of sunlight. As you go farther from the equator, the strength of the sun is reduced. But still, this is a much better solution than relying on electric grids which do not reach remote areas. It is just a mater of storing the heat generated from the solar collector properly. For example, some buildings in Sweden utilized an underground storage facility where solar energy is stored resulting to savings from heating the building and their water.

In areas where gas and fuel are out of reach of the pockets of poor communities, residents have to rely on solar cooking for their meals. They use this bowl shaped discs equipped with mirrors or reflectors which directs all the sunlight on the middle where a pot is placed. The same technology is being used in India, Sri Lanka, and Nepal. This serves are a good alternative from conventional fuels like coal, firewood, and gas. They can use these solar stoves during a sunny day and use traditional fuels when the weather is not that good.

This reliance by communities on solar cooking should encourage more studies on how to make photovoltaic cells cheaper for an ordinary household. At this time, the use of solar cells is not economically friendly for a single household. However, the approach here is to install a series of solar panels which would be shared by the whole community. This could be a good idea depending on your usage, but for basic lighting purposes these could work in small poor communities.

In some areas, community cooperatives have found ways to bring electricity to households out of reach of power grids. In the Philippines for example, a local cooperative provided households loans to enable them to install a basic solar power module which can produce enough electricity for three light bulbs. This ay be laughable in our standards but to these people who have been living all their lives with the flickering light of the candles, three electric light bulbs make a great deal of a difference.

The story is the same in other countries. In Israel, the high costs of photovoltaic cells have clamped down the growth of solar energy in the country. It if fortunate, therefore, that the Israeli government is now providing incentives for households that would use solar energy.

However, according to industry analysts, the costs of solar cells production will go down as the demand increase. Also, most are hopeful that recent discoveries and advancement in technologies will find a way to bring down costs of using solar energy.

Ordinary households using solar energy is an ideal scenario that we should all strive to achieve.

Complete Guide To Solar Energy