city residential home uses
Recent years have seen rapid growth in the number of installations of PV on to buildings that are connected to the electricity grid. This area of demand has been stimulated in part by government subsidy programmes (especially Japan and Germany) and by green pricing policies of utilities or electricity service providers (e.g. in Switzerland and the USA). The central driving force though comes from the desire of individuals or companies to obtain their electricity from a clean, non-polluting, renewable source for which they are prepared to pay a small premium.In these grid-connected systems, a PV System supplies electricity to the building and any day-time excess may be exported to the grid. Batteries are not required because the grid supplies any extra demand. However, if you want to be independent of the grid supply you will need battery storage to provide power outside daylight hours. Solar PV modules can be retrofitted on to a pitched roof above the existing roof-tiles, or the tiles replaced by specially designed PV roof-tiles or roof-tiling systems. If you are planning to put a PV system on to a building and have it connected to the grid supply there are likely to be local regulations that need to be met, and permission required from your utility or electricity service provider. The level of credit for any exported electricity will vary depending on local schemes in place.
industrial uses
For many years, Solar Energy has been the power supply of choice for Industrial applications, where power is required at remote locations. This means in these applications that solar power is economic, without subsidy. Most systems in individual uses require a few kilowatts of power. The examples are powering repeater stations for microwave, TV and radio, telemetry and radio telephones.Solar energy is also frequently used on transportation signalling e.g. offshore navigation buoys, lighthouses, aircraft warning lights on pylons or structures, and increasingly in road traffic warning signals. Solar is used to power environmental and situation monitoring equipment and corrosion protection systems (based on impressing a current) for pipelines, well-heads, and bridges or other structures. As before, for larger electrical loads it can be cost effective to configure a hybrid power system that links the PV with a small diesel generator. Solar's great benefit here is that it is highly reliable and requires little maintenance so it's ideal in places that are hard to get to.
yuzhen
Monday, April 28, 2008
Wednesday, April 23, 2008
Popularity of Solar Energy
The Popularity of Solar Power Homes
Most people are aware of what solar power is and how it works, but for some people it is still a new issue.
Solar power homes are now more popular than ever, and for a few different reasons. Cutting costs is one of the first things that usually attract homeowners to solar power, but certainly not the only thing. Solar power homes are also great for the environment because they are not using fossil fuels and other forms of energy and so they are not polluting the environment.
Once a homeowner has switched over to solar power they will usually never complain or have any regrets, but the biggest issue is actually getting people to recognize the benefits offered to them by solar power and getting them to make the switch.
When something this good comes along most people assume that it is too good to be true, which is why the number of solar power homes in the world when compared to those with regular electricity is still very low.
If you are considering retrofitting your home with solar power but not yet sure, here are a few things you should know. For one you need to understand that solar power is only possible when there is sunlight available, so on rainy and cloudy days your solar powered applications will not be working.
This is obviously a serious problem in some cases but the fact is that it is one of very few problems overall, which is what you really want to keep in mind.
Also remember that for optimal operation, the panels used for your home will need direct sun for at least three hours mid-afternoon each day, and so therefore you want to make sure that they are situated in an ideal location at your home where they are going to be able to receive this daily sunlight.
Solar power experts suggest that homeowners who want to convert their houses to solar power homes should start by using solar energy to heat the pool. This is a very quick and easy step towards becoming completely dependent on solar power, and so it will definitely be one of the best first moves that you can make.
Solar power homes are quickly becoming all the rage, especially when you take issues like global warming which are facing the world today into consideration, and understand how much you and the world around you will be benefitting by you integrating solar energy into your life as much as possible.
http://www.linkroll.com/solar-power-house/the-popularity-of-solar-power-homes.php
-Valentia
Most people are aware of what solar power is and how it works, but for some people it is still a new issue.
Solar power homes are now more popular than ever, and for a few different reasons. Cutting costs is one of the first things that usually attract homeowners to solar power, but certainly not the only thing. Solar power homes are also great for the environment because they are not using fossil fuels and other forms of energy and so they are not polluting the environment.
Once a homeowner has switched over to solar power they will usually never complain or have any regrets, but the biggest issue is actually getting people to recognize the benefits offered to them by solar power and getting them to make the switch.
When something this good comes along most people assume that it is too good to be true, which is why the number of solar power homes in the world when compared to those with regular electricity is still very low.
If you are considering retrofitting your home with solar power but not yet sure, here are a few things you should know. For one you need to understand that solar power is only possible when there is sunlight available, so on rainy and cloudy days your solar powered applications will not be working.
This is obviously a serious problem in some cases but the fact is that it is one of very few problems overall, which is what you really want to keep in mind.
Also remember that for optimal operation, the panels used for your home will need direct sun for at least three hours mid-afternoon each day, and so therefore you want to make sure that they are situated in an ideal location at your home where they are going to be able to receive this daily sunlight.
Solar power experts suggest that homeowners who want to convert their houses to solar power homes should start by using solar energy to heat the pool. This is a very quick and easy step towards becoming completely dependent on solar power, and so it will definitely be one of the best first moves that you can make.
Solar power homes are quickly becoming all the rage, especially when you take issues like global warming which are facing the world today into consideration, and understand how much you and the world around you will be benefitting by you integrating solar energy into your life as much as possible.
http://www.linkroll.com/solar-power-house/the-popularity-of-solar-power-homes.php
-Valentia
Friday, April 11, 2008
Solar Energy: The energy source of the future?
An alternative to traditional energy sources that is starting to get attention is solar energy. Solar energy is becoming of great interest because it a clean and relatively inexpensive for of energy when compared to traditional energy sources.
Solar energy is harnessed through the use of solar panels. Solar panels are basically a device that gathers and coverts the solar energy from the sun. Solar panels have been greatly improved in the past few years as more research and studies have went into finding out more about solar energy.
Besides having solar panels, to use solar energy you need a storage unit. While solar panels gather up the sun's energy they are not capable of storing large amounts for long periods of time. The sun is not going to be available all the time, so it is very important to be able to store the energy for use when it can not be gathered directly from sun.
This brings up the limitations of solar energy. While solar energy is a very promising alternative energy, it does have some issues that need to be addressed before it can be used as a sole energy source.
The major limitation is the ability to collect and store enough solar energy to be able to supply constant power. Due to the unpredictability of the sun this has been hard to solve. The only solution so far is to have another energy source to act as a back up when the solar energy is depleted.
Solar energy is best used for heating because heating involves little energy loss and makes the most out of the available solar energy. It can also be used for cooling. Cooling, however, involves a lot of energy use and therefore depletes the solar energy quickly.
Converting solar energy to electricity can also be done, but like cooling I uses up solar energy quickly and requires a lot of stored energy.
As mentioned, though, research into solar energy is helping to expand its use. Improvements in technology are on the horizon and they will allow for greater use of solar energy.
It is obvious why people are so interested in solar energy. The sun is a very available resource. It is renewable and it does not harm the environment. Solar energy is very clean and very assessable to the masses.
The use of large solar grids is something that may, one day, allow solar energy to provide energy to large populations of people, just as electricity and other energy sources are provided now.
Solar energy is large enough to be able to satisfy the energy demands. This makes it an ideal replacement for traditional energy sources, unlike many other alternative energy resources that have been introduced.
It is something that has to be considered. The world's current energy resources are not going to last. Soon there will be no choice, but to find an alternative and solar energy is looking to be the front runner.
http://www.mysolarenergyathome.com/
- Xin Yun
Solar energy is harnessed through the use of solar panels. Solar panels are basically a device that gathers and coverts the solar energy from the sun. Solar panels have been greatly improved in the past few years as more research and studies have went into finding out more about solar energy.
Besides having solar panels, to use solar energy you need a storage unit. While solar panels gather up the sun's energy they are not capable of storing large amounts for long periods of time. The sun is not going to be available all the time, so it is very important to be able to store the energy for use when it can not be gathered directly from sun.
This brings up the limitations of solar energy. While solar energy is a very promising alternative energy, it does have some issues that need to be addressed before it can be used as a sole energy source.
The major limitation is the ability to collect and store enough solar energy to be able to supply constant power. Due to the unpredictability of the sun this has been hard to solve. The only solution so far is to have another energy source to act as a back up when the solar energy is depleted.
Solar energy is best used for heating because heating involves little energy loss and makes the most out of the available solar energy. It can also be used for cooling. Cooling, however, involves a lot of energy use and therefore depletes the solar energy quickly.
Converting solar energy to electricity can also be done, but like cooling I uses up solar energy quickly and requires a lot of stored energy.
As mentioned, though, research into solar energy is helping to expand its use. Improvements in technology are on the horizon and they will allow for greater use of solar energy.
It is obvious why people are so interested in solar energy. The sun is a very available resource. It is renewable and it does not harm the environment. Solar energy is very clean and very assessable to the masses.
The use of large solar grids is something that may, one day, allow solar energy to provide energy to large populations of people, just as electricity and other energy sources are provided now.
Solar energy is large enough to be able to satisfy the energy demands. This makes it an ideal replacement for traditional energy sources, unlike many other alternative energy resources that have been introduced.
It is something that has to be considered. The world's current energy resources are not going to last. Soon there will be no choice, but to find an alternative and solar energy is looking to be the front runner.
http://www.mysolarenergyathome.com/
- Xin Yun
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