Joined: 27 September 2006
Solar power can be a range of different things – from wind turbines to photovaultaic cells. Any power that originates from the sun – whether it be wind patterns or the rays themselves – can technically be called "solar power"; however, in a more conventional sense, solar energy is collected in two different ways – one active and one passive. During active collection, groups of photovaultaic cells that make up "solar panels" collect energy; and in passive applications, certain surfaces or designs are used to collect solar power without storing it as energy.
Passive solar applications can be constructed out of a number of different materials, including iron and concrete. In most passive solar applications, heat is concentrated on a surface and then retained; later in the day, when the temperature beings to drop, the heat then radiates outward to warm the room. Sometimes this form of solar power is also used to heat water. Generally, the water will be placed inside of a giant black iron tank. As the sun beats down on the tank, it retains the heat and transfers it to the water, increasing the temperature.
In active solar applications, sunlight strikes the solar panel, creating energy through complex interactions with the surface materials. In most solar power applications, the electricity created in this process is then sent to a battery block, where it is stored. Whenever the controller requires energy, he or she can simply switch on the battery block from the control panel, creating a flow of energy to the house or application in question.Whether you purchase a passive solar application or an active solar application, it will be considerably more cost-effective in the long run than a similar gas or diesel powered application, such as a generator. While you may have to make a significant investment initially, the return on that investment will continue to pay off into the future, as your application lasts 20 or 30 years without needing to be replaced.
Joined: 06 September 2005
According to the rules, only original advices are allowed. http://www.india-forums.com/forum_posts.asp?TID=536071 Please don't post the copy/paste versions of advices from the net!
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