How old is the human use of solar energy

According to records, the human use of solar energy has a history of more than 3000 years. And tries to use solar energy as a kind of energy and power, only 300 years of history. Real solar as & other; Recent much-needed supplement energy & throughout; ，“ The foundation of the future energy structure & throughout; It is in recent years.

4. 5 billion years ago, solar radiation to the earth.

in the 9th century BC, the Chinese people began to use & other; YangSui & throughout; ( Thus the) Concentrated fire.

in the 7th century, began using convex through gathered solar fire.

the 3rd century BC, the greeks and the Romans used & other; Burning mirror & throughout; ( Thus the) As a weapon focus solar lighting and lighting the enemy ship sails.

1 century, built the first Italian historian Pliny heat preservation and heat insulation of passive solar house.

　　1- In 500, the Romans built in to room south toward the large Windows of the use of direct sunlight to heat.

6th century, check the east Roman emperor Justinian issued law protects housing and public building solar shower, so that the dampers are no longer block sunlight shoots.

in the 17th century, educated people accepted the idea that the sun and other stars are the same, and in 1615 a new use of the solar heating air to make its expanding power pump. From 1643 to 1715 during the reign of French king Louis xiv is an era of solar experiment.

in the 18th century, European aristocrats USES solar wall store ripe fruit, Britain and the Netherlands using tilt the south walls of glass to promote the development of solar greenhouse. In 1767, Swiss scientist Horace invented the first solar collector. In 1774, in Paris, France was held to use lens converge the sun melt metal performance.

in the 19th century, wealthy europeans began to build and use of solar greenhouse and insulated building, French scientists from solar collector's heat to generate steam to power the steam engine. In 1837, the British astronomer Huxley on the exploration on the way to the horn of Africa, a black box buried in the sandy soil, use double deck glass insulation box, makes the temperature in the oven to 116 degrees, so he will cook with this simple solar equipment. In 1839, the French scientist Edmund Becquerel solar photovoltaic effect was observed. In 1861, French scientists Augustin Mouchot obtained a patent on solar equipment. 1870 Augustin Mouchot using solar cooker, solar water pump irrigation, wine and water distillation (solar evaporator Widespread use of solar energy) 。 American engineer John Ericsson developed solar power only. In 1891, an American inventor John Ericsson solar water heater of the first largest commercial applied for a patent. In 1892, the British inventor Aubrey Eneas to produce the slope and the solar engine company, invented the solar power machine to replace coal or wood drive of the steam engine.

in the 20th century, in 1950, the Soviet union first solar power tower is designed. American architect Frank Bridgers design first solar office building in the world. In 1952, the French national center for research in the pyrenees shandong department completed a 50 kw of solar power. In 1954, the bell LABS developed into practical silicon cells, is widely used in aerospace industry of the artificial earth satellite. In 1955, Israel taber, etc in the first international solar heat utilization science conference put forward the basic theory of the selective coating, and developed into practical black nickel and other selective coating, create conditions for the development of efficient collector.

in the 21st century, due to the burning of fossil energy, causing a global environmental pollution and ecological destruction, pose a threat to human survival and development. World conference on environment and development, the Chinese government attaches great importance to for the environment and development, 10 countermeasures and measures, clear & other; Adjust measures to local conditions to development and promotion of solar energy, wind energy, geothermal energy, tidal energy, biomass and other clean energy & throughout; , formulated the 'China's agenda 21, further defined the solar key development projects. After 1992, the world solar energy utilization and to enter into a development period, its features are: solar energy utilization and the sustainable development and environmental protection together, the global common action, efforts for the realization of the world solar energy development strategy; Solar energy development goal is clear, focused, today, solar energy has been widely used. Solar flashlight, solar oven, solar photovoltaic, solar street light, solar advertising light boxes, etc. The arrival of the 21st century the renewable energy law of the People's Republic of China, China enters a market in the world's first; Scientists in the United States the protein in spinach extract chlorophyll, make the chlorophyll solar cells; Germany which consists of 33500 solar battery solar power plants. Solar energy of human being has entered a conscious, active new stage of development and utilization.