Solar Energy Brief Introduction

Solar energy is an external object from the Earth's energy (mainly solar) energy needed for the vast majority of human beings, either directly or indirectly from the sun. It is a variety of plants through photosynthesis to transform solar energy into chemical forklift energy stored in plants down. Coal,forklift truck, oil, natural gas and other fossil fuels is from ancient plants and animals buried in the ground after a long geological formation. They are essentially fixed by the ancient biological solar energy. In addition, hydro,packing machine, wind, wave energy, ocean current energy, etc. are also coming from the solar energy conversion.
The energy of the earth itself, usually hidden within the Earth's heat-related energy and energy related with the nuclear reaction.
On the Earth's interior heat and energy, we call geothermal solar water heater energy. Hot springs and volcanic eruptions of magma that geothermal performance. Earth can be divided into crust, mantle and core layer, it is a large thermal reservoir. Crust is the layer of the Earth's surface, usually a few kilometers in thickness to 70 kilometers. The mantle below the crust, which melted most of the magma, the thickness of 2900 km. Is this part of the volcanic magma general. Earth's interior to the core, the core center temperature is 2000 degrees. Can be seen on the earth is also a great storage of geothermal resources.
Related with the nuclear reaction is nuclear energy. When changes in the structure of nuclei can release a lot of energy, as nuclear energy, referred to as nuclear solar water heater energy, commonly known as atomic energy. It is stored in the crust from the uranium, plutonium and other fission reaction occurs when the nuclear fission energy resources, and ocean storage of deuterium, tritium, lithium fusion reaction occurs when the nuclear fusion energy resources. These substances in the event of nuclear reactions release energy. Currently the largest use of nuclear power generation. In addition, other types can also be used as a power source,packing machine, heat and so on.
Gravitational energy from the planet that the Earth and moon, the sun and other celestial bodies formed by the interaction energy. Earth, moon, sun, regular exercise between, resulting in periodic changes in the relative position, the gravitational force between them change with the fluctuations and the formation of tidal water. Compared with these two types of energy, a small number of forklift energy. Converted into the world of the tidal energy 30 million tons of coal per year, while the actual shallow area that is only available as part of each year can be equivalent to 6000 tons of coal. Basic form of solar water heater energy utilization can be divided into the following four categories.