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| Solar Energy |
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| Solarthermal and Photovoltaic |
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Increasing prices for fossil fuels, growing environmental impact and a constant advancement of the solar technology led to the fact that this ecologically friendly technology is located ever more strongly in the center of the consumer’s interest.
Gradually more private households and commercially used buildings already cover partly their power demand from the pollution free and efficient solar energy.
Nowadays there are two possibilities to use the solar energy: Solar Thermal that designates solar plants for the industrial water warming or/and heater support. However, the electric power production from sunlight by solar cells is called Photovoltaic. |
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| Data Source: Q-Cells |
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| Solar Thermal |
26-03-2007 |
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| Production of warm water for heating and service water |
One understands by solar warmth in general the change of the solar energy into heat, like is used for the hot-water preparation, which is required in swimming-pool heating, hot shower or the heating. A solar collector converts the sun rays into heat. The course to implement the solar thermal is eligible. A usual solar power plant consists of a collector field on the roof, the storage tank with two built-in heat exchangers and a pump with controller. These components are connected by pipes and represent the solar cycle. When sunbeams irradiate on the collector, then those distribute nearly 80% of their energy to the absorber. The warmed up solar liquid is pumped to the lower heat element in the storage tank. There it delivers its warmth to the cold water. The water warms up thereby, rises in the storage tank upward and can be used for heating, showering, bathing and in the entire household.
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| Photo voltaic |
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| Power production |
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Photo voltaic panels
Besides the hot water warming the energy of the sun can be also used for the production of power. With the help of the solar modules the sunlight is converted directly into power. This process is called photo voltaic effect (PV). The use of solar power brings numerous advantages with itself. Solar power is produced cleanly, quietly and reliably.
Today the use of the Photo voltaic is widespread. If more power is generated than used the additional power can be fed into the global power network or can be used for charging accumulators. In remote areas without connection to power lines it is used, in order to cover demands of electric current for lighting, for cooling, for the enterprise by water pumps etc.
Also computers, telecommunication systems, lighting at highways or buoys in the sea are supplied with solar electricity. Meaningful operational areas in agricultural applications can be pasture watering places, electrical fences, fishing calibration ventilation, irrigations, greenhouses etc. The photo voltaic is used also for current supply at space laboratories.
Two usual application possibilities are distinguished:
Connection to the global power network exists:
The generated power is fed into the public supply network. The refund of the supplied power is often higher than the saved costs of self used power.
No connection to the global power network:
Here solar modules generate power for light, television, radio, fridge and other devices. The surplus power is stored in batteries in order to guarantee the energy supply also at night or at times of low sunlight. |
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