Thứ Năm, 3 tháng 1, 2013

Examples of the Use of Solar Energy in the World

It is widely known there are two basic possibilities of solar energy, namely the processing of solar radiation into heat or electricity. Modern solutions based on obtaining energy from the sun are very different and use to varying degrees in different parts of the world.
One of the countries in which the development of solar energy in recent years, China is very dynamic. This is probably due to the enormous energy consumption of the Chinese economy and favorable geographic position. Average annual intensity of solar radiation in China is approximately 4,500 MJ/m2 (4500 kWh / m 2).
In the period 2005-2010, China plans to use about 1.25 billion U.S. dollars on the development of solar energy. The main use of energy from the sun in China is heating water and buildings, air conditioner, ventilation and electricity generation in photovoltaic systems.
Interesting use of solar energy takes place in Japan. It has found the snow melting system defaulted on the road. The village was placed in the roadway Ninohne tube heat exchangers, which are between the surface and the working medium flowing by. This installation has been combined with another battery of vertical ground heat exchangers, which are also a source of heat in winter and store energy in other seasons. In order to increase the working temperature of the heated plate having a roadway, and thus melt snow and ice, the system was coupled with a heat pump.
In the summer sun heats up the road to record high temperatures and is a part of this energy is stored in the form of heat in the deeper layers of the soil for later use in winter.
By contrast, Canada was founded in the town of Okotoks Drake Landing Solar estate Community. It consists of 52 residential buildings in hot water supplied for use and heating, heated by solar energy. Solar batteries were placed on the roofs of the garage, and also included the installation of underground storage of heat. An interesting example is the construction of settlements in Germany. The village was founded the estate Neckasulm heated by solar energy. Ground heat storage system works here with solar collectors. Solar energy is stored during the summer season in an underground warehouse, then to use it for heating in winter. The world is slowly seeking to acquire the solar energy not only heat but also electricity. Brand new are systems that allow simultaneous acquisition of these two types of energy. These systems are called hybrid. They represent a kind of combination of the collector with photovoltaic modules - such a combination increases the effectiveness of the installation and saves space used by the installation.
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