Solar Energy Lamp ... - HOME IMPROVEMENT AND GARDENING

People in urban construction and the construction of characteristics that need to create a city of character, embodies the technology and show the city urban culture. In Tianjin, the important international port in north China city to Landscape Light as a contrast to enhance the appearance of ways, have become a culture of sustainable development into the human landscape. Since 1992, Tianjin, landscape lighting from small to large, from less to more, from the technical to the cultural heritage, has experienced rapid development. However, landscape lighting construction, use of renewable energy Lighting Has few, this phenomenon has not aroused sufficient attention.

After investigation, I found that solar lighting landscape lighting in the area of Tianjin, there are deeper levels of application. 1, the status of landscape lightingAccording to the survey, as at the end of 2005, Tianjin, landscape lighting within the six holdings to 32,000 multiple. Commercial facade of which about 24 000, 7000 many outdoor advertising, large lighting facilities (day tower, water park, park, Galaxy Plaza, etc.) 46, a total of 336 public buildings, a total of 755 Democratic National Construction Association, tour spotlights 11, Landscape lighting above the total power consumption of about 24 million kwh.

From these figures, we can see that energy consumption is enormous. With the accelerated process of global industrialization, conventional energy sources can not meet people?s production and living, a variety of new environment-friendly renewable energy share in people?s lives is also growing. Using ethanol as fuel for cars, using starch biodegradable lunch boxes do, there are 2006 ?Summit of Eight? on the solar cars have slowly penetrated into people?s lives. But they still have not solar landscape lighting can play its due role, which both its own reasons and external conditions of constraint. 2, solar energy-related technologies Solar energy is inexhaustible, and clean and safe, is the ideal renewable energy.

After 50 years of development, solar photovoltaic technology has matured, is a characteristic of sustainable development of renewable energy technologies. China?s green lighting project based on the original office of special investigations for the project shows that our landscape lighting electricity consumption in the whole of the ratio is about 12%. The summer of 2006, Tianjin power load reached 5.93 million kilowatts, the reasons for excluding the summer air conditioning and other facilities, landscape lighting energy accounts for 8% to 10%, basic national conditions and consistent. Consumption growth rate by less than 5% of GDP growth rate conservative calculations, by 2010, China?s generating capacity is expected to reach 2.7 trillion kwh, lighting, electricity is estimated to be 300 billion kwh over. If the lighting electricity savings of a percentage point, you can power-saving 2.0 billion ~ 3 billion kwh; if one-third of lighting electricity saving, energy saving can be 100 billion kwh. Can be seen, the lighting energy saving as the most effective means of environmental engineering and energy-saving, no exaggeration. 50 years of the 20th century, Bell Labs in the United States developed the first practical silicon solar cell, the birth of the solar energy into electricity to practical photovoltaic technology.

Working principle is based on the solar cell semiconductor PN junction photovoltaic effect, that is, when the object is affected by light, the charge distribution within the state of the object changes the voltage and current caused by an effect. That is, when sunlight or other light radiation semiconductor PN junction, they will appear on both sides of the PN junction voltage, called the photo-voltage, so that PN junction short-circuit, resulting in current. Solar thermal power generation is without going through the process of light energy directly into electrical energy generation methods. It includes photovoltaic, photochemical generation, optical sensors and optical bio-electricity power generation.

Photovoltaic power generation is the use of solar energy and semiconductor electronic devices effectively absorb solar radiation, and transformed directly into electrical energy power generation, solar power in today?s mainstream. People often say that solar power generation solar photovoltaic (PV), also known as solar power. Present, solar photovoltaic lighting applications typical matrix components including photovoltaic panels, batteries, power, power conditioning unit, AC load center, DC / AC converter, AC / DC converter, DC current regulator, light and floodlights. System structure may include only one of several components, depending on the source and its different applications.

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Source: http://www.officialfirej.com/solar-energy-lamp-how-to-rational-use-of-solar-energy.html

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