Do you know any thing about solar energy?

Question

I will appreciate it if u explain how it works, and in what applications it is used..Also i want to know how many countries started to apply it and how many percent does it make of the consumed energy in the world??..thanx

Answer 1

yes

Answer 2

The simplest is the greenhouse or a window which lets the radiant heat of the sun into an enclosed area. A passive collector does not move to follow the movement of the sun and an active collector moves to stay pointed at the sun. Depending on climate and construction you can actually heat your home's hot water for bathing and ordinary tap water with a passive collector. It can also provide heat for the house. It doesn't need to get hotter than 100F.

It is possible to build an active collector that will produce steam to a steam engine to run a generator to power the house. By using a bio-fuelled boiler at night you could have free, or nearly free, electricity, after the initial cost. Both units can be built by the owner

Photovoltaics, or solar panels, are too expensive as yet to be feasible in home use.

It can be used in any country and probably is. Solar accounts for only a tiny fraction of the electricity produced in the world.

Plans are available for both types of collectors. Efficiency varies by design and region. For the steam electric generator check the "Green Steam Engine" site and steam boilers are built by various places. Some large satellite TV receiving dishes could easily become active reflectors to make steam. An attitude control to turn the reflectors can be made with photocells and electric motors and bicycle parts.

Solar systems are especially good when used in underground or earth-sheltered houses. Using fibre optics to bring light into the rooms is also better than windows.

Answer 3

Solar energy can be applied to domestic premises by installing panels on the south facing roof. These panels contain a liquid that will not freeze and it is heated by the Sun and pumps around the circuit and this in turn transfers the heat to a hot water system. It might not heat the water up to a usable temperature but it effectively preheats the water so that the main heating boiler is on for less time so money is saved on the gas or electricity or oil. With the cost of the system and the cost of installation it has been worked out that to recover your costs it would take around 200 years of use. This assumes that the system will last that long. Hot countries do get a better and efficient use from these panels but even in the UK it has some effectiveness in reducing the output of carbon. There are other panels made I believe from silicone that generates electricity by the light of the sun. A larger version of the battery-less calculator power unit. Can give you anything else but this might help.

Answer 4

Solar energy (also knows as solar radiation or insolation) is energy from the sun. This energy, in the form of heat and light, supports all life on Earth, drives the Earth's climate and weather and is predominately responsible for the class of resources collectively known as renewable energy.

Solar energy also broadly describes technologies that utilize sunlight. The applications are diverse and date back millennia. The Greeks, Native Americans and Chinese warmed their buildings by orienting them toward the sun. In Europe, farmers used elaborate field orientation and thermal mass to increase crop yields during the Little Ice Age. Modern solar technologies continue to harness the sun to provide water heating, daylighting and even flight.

Solar power generally describes technologies that convert sunlight into electricity and in some cases thermal or mechanical power. In 1866, the French engineer Auguste Mouchout successfully powered a steam engine with sunlight. This is the first known example of a solar powered mechanical device. Over the next 50 years inventors such as John Ericsson, Charles Tellier and Frank Shuman developed solar powered devices for irrigation, refrigeration and locomotion. The progeny of these early developments are concentrating solar power plants.

The modern age of solar power arrived in 1954 when researchers at Bell Laboratories developed a photovoltaic cell capable of effectively converting light into electricity. This breakthrough marked a fundamental change in how power is generated. Since then solar cells efficiencies have improved from 6% to 15% with experimental cells reaching efficiencies over 40%. Prices on the other hand have fallen from $300 per watt to less than $3 per watt.
The utilization of solar energy and solar power spans from traditional technologies that provide food, heat and light to electricity which is uniquely modern. The diversity of form and long history of solar energy are manifest in a wide variety of applications.

Answer 5

It is very cheap, I use it in my water heater, I obtain water with 10 to 15°C over the temperature in the place.
Also with solar panels you can convert solar energy into electrical energy.
The first users of solar energy were the Greeks and later the Romans, they used it to warm houses.
I hope it is useful for you.

Answer 6

Asking others to do your home work for you is cheating. Is that not the same as copying from someones else's paper?

If you did a search on yahoo answers and found it then that would be research but being so LAZY that you ask and copy it down is just simply wrong.

I really hate to think that when I get older my life and world will be in the hands of people with such low values.

If you will cheat on your home work, what else would you cheat on?

Answer 7

Solar energy is simply any way you use the suns natural energy to produce heat or electrical power to perform some needed funtion.
The simplest form is passive like building a greenhouse, using a sunroom, or simply opening your draps in the winter and letting the suns heat and light in.
Probably the next simplest is heating water in a solar collector which is a large flat box with a window on the sunny side, and water flowing through tubes inside. This type is used for hot water, pool heaters, etc. Yhere also are hot water heating systems which use mirrors to reflect sunlight to a common point which can produce extreme temperatures and boil water to steam which can be used for industrial processes and power turbines.
The more complex use is making photovoltaic panels which convert sunlight to electrical power. When people talk about "Solar Panels", this is normally what they are referring to.

A very very small amount of electrical energy is produced by solar around the world. The reason is primarily because the amount of energy from the sun is very minute in terms of area, and it is not reliable in many areas because of cloudy weather. Of couse it doesn't work at night at all. Because of these facts, it takes an extremly large and very expensive solar system to produce much power, and even then it may not be very reliable. Since power by fossil fuel has always been much cheaper and more reliable, man has chosen to produce power from primarily Gas, Oil, Coal, and Nuclear.it is very important method to us energy intelligence.it is very cheap method of using energy

Answer 8

Solar energy is simply any way you use the suns natural energy to produce heat or electrical power to perform some needed funtion.
The simplest form is passive like building a greenhouse, using a sunroom, or simply opening your draps in the winter and letting the suns heat and light in.
Probably the next simplest is heating water in a solar collector which is a large flat box with a window on the sunny side, and water flowing through tubes inside. This type is used for hot water, pool heaters, etc. Yhere also are hot water heating systems which use mirrors to reflect sunlight to a common point which can produce extreme temperatures and boil water to steam which can be used for industrial processes and power turbines.
The more complex use is making photovoltaic panels which convert sunlight to electrical power. When people talk about "Solar Panels", this is normally what they are referring to.

A very very small amount of electrical energy is produced by solar around the world. The reason is primarily because the amount of energy from the sun is very minute in terms of area, and it is not reliable in many areas because of cloudy weather. Of couse it doesn't work at night at all. Because of these facts, it takes an extremly large and very expensive solar system to produce much power, and even then it may not be very reliable. Since power by fossil fuel has always been much cheaper and more reliable, man has chosen to produce power from primarily Gas, Oil, Coal, and Nuclear.

Answer 9

It doesn't matter where you get the info its not cheating as long as your getting the info your learning . All in all its free energy from the sun that bombards the earth every day and captured from man made devices like solar cells wind mills solar water heaters things of that nature

Answer 10

There are important characters of photograph voltaic power: a million) those are actual loose from from sunlight. 2) photograph voltaic systems take sunlight to promptly produce electricity from photograph voltaic radiation 3) loose from pollution 4) photograph voltaic gadget's performance relies upon on the climatic situations

Answer 11

It's a way of not using fossil fuels and its better for the planet. Also it can't be affected by flooding, like power stations since its all cover with plastic or glass!