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The
use of solar energy
For milliards of years the Sun has been providing the light and the heat to
Earth – only on that condition life on Earth is possible. We have been using the
energy of solar radiation (ESR) for ages. During summer it directly heats up our
houses but in winter to heat them up we use the energy stored in wood, coal, oil
and gas. Nowadays, we use the reserves of fuels which have been garthered by
nature during the centuries. In order to protect these reserves the branch of
heating technology consequently follows the idea of responsible dealing with
them. Effective supplementation of these aspirations is the direct use of the
energy of solar radiation by the solar collectors.
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A - diffuse solar radiation
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F - solar radiation of
absorber
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B - direct solar radiation
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G - thermal radiation of
glass lid
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C - wind, rain, snow,
convection
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H - operational power of
collector
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D - loss caused by
convection
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K - convection
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E - conduction loss
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L - reflection
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Due to the collectors with the high technical quality and
adjusted systems the economical use of energy of solar radiation is not any
longer a future vision but an every day reality.
If we take into account the constantly rising prices of fuels the investment
into solar installation turns out to be the real investment for the future.
Solar radiation is a stream of energy sent by the Sun steadily in all
directions. The radiation reaches upper layer of atmosphere of Earth with the
constant power of 1,36 kW/m2. It is so called constant solar value.
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