download Skype
|
Solar Energy Basics.
Solar energy runs the engines of the earth. It heats its atmosphere
and its lands, generates its winds, drives the water cycle, warms its
oceans, grows its plants and feeds its animals. This energy can be converted into heat and
cold, driving force and electricity.
 |
Energy in the Sun.
The sun generates an enormous amount of energy - approximately 1.1 x 10 E20 kilowatt-hours every second. (A kilowatt-hour is the amount of energy needed to power a 100 watt light bulb for ten hours.) The earth’s outer atmosphere intercepts about one two-billionth of the energy generated by the sun, or about 1500 quadrillion (1.5 x 10 E18 ) kilowatt-hours per year. Because of reflection, scattering, and absorption by gases and aerosols in the atmosphere, however, only 47% of this, or approximately 700 quadrillion (7 x 10 E17 ) kilowatt-hours, reaches the surface of the earth. .....more.
|
|
 |
Passive Solar Energy use.
Passive solar design, or climate responsive buildings use existing technologies and materials to heat, cool and light buildings. They integrate traditional building elements like insulation, south-facing glass, and massive floors with the climate to achieve sustainable results. .....more.
|
|
 |
Solar Energy Collectors.
Using energy from the sun to heat water is one of the oldest uses of solar energy. Solar collectors are the heart of most solar energy systems. The collector absorbs the sun’s light energy and changes it into heat energy. This energy is than transferred to a fluid or air which are used to warm buildings, heat water, generate electricity, dry crops or cook food. Solar collectors can be used for nearly any process that requires heat.
.....more.
|
|
 |
Solar Photovoltaic Power.
Photovoltaics (PV) is the term derived from Greek word for light - photos- and the name for unit of electromotive force - volt. Photovoltaics means direct generation of electricity from light. Recently this process is utilised by means of solar cells. The solar cells, made from semiconductor materials such as silicon, produce electric currents when exposed to sunlight. .....more.
|
|
 |
Solar Thermal Power.
In addition to using the warmth of the sun directly, it is possible (in areas with high level of solar radiation) to use the heat to make steam to drive a turbine and produce electricity. If undertaken on a large scale, solar thermal electricity is very cost-competitive......more.
|
|
 |
Solar Cooking Basics.
Successful solar cookers were first reported in Europe and India as early as the 18th century. Solar cookers and ovens, absorb solar energy and convert it to heat, which is captured inside an enclosed area. This absorbed heat is used for cooking or baking various kinds of food. In solar cookers temperatures as high as 200 degrees Celsius can be achieved.
.....more.
|
|
 |
Solar Water Distillation.
Many people throughout the world do not have access to clean water. Of the 2.4 billion people in developing countries, less than 500 million have access to safe drinking water, let alone distilled water. The answer to these problems is a solar still. A solar still is a simple device that can convert saline, brackish, or polluted water into distilled water. .....more.
|
|
|
|
Solar Photovoltaic Power.
Photovoltaics (PV) is the term derived from Greek word for light - photos- and the name for unit of electromotive force - volt. Photovoltaics means direct generation of electricity from light. Recently this process is utilised by means of solar cells. The solar cells, made from semiconductor materials such as silicon, produce electric currents when exposed to sunlight. .....more.
|
|
© Copyright energysavingnow.com 2000.
© Copyrights to Software @ this site
|
|
BIOFUELS ASIA
conference
2008 - 27th-28th March 2008,
Thailand
Energy Savings in
UK
Energy Savings in
USA
"Disturbed children"
and
"Grumpy old men".
|
