I would like to report on the use of solar energy and its professional graduate students, please teach me what the predecessors of what the university is a good professional, thank you!My key is to want to apply for a school on the solar energy of the professional examination with the thank you
Solar energy can be divided into 2 kinds:1 solar PVPhotovoltaic module is a kind of exposure to the sun will produce direct current power generation device, by almost all of the semiconductor material (such as silicon) made of thin solid photovoltaic cells. Because there is no active part, it can operate for a long time without causing any loss. Simple photovoltaic cells can provide energy for watches and computers, more complex photovoltaic system for housing lighting, and power supply for the grid. The photovoltaic module can be made into different shapes, and the components can be connected to generate more power. In recent years, the roof and the surface of the building will be the use of photovoltaic panels, and even be used as part of the windows, skylights or shelter, these photovoltaic facilities are often referred to as the building of photovoltaic systems.
Flat plate collector is widely used in solar water heaters, etc.. The concentrating collector can make the sunlight focus to obtain the high temperature, the focus can be a point or a line, and is used for the solar power station, the heating (heating) of the house, the air conditioner (air conditioner), the solar stove, etc.. According to the condenser structure "Fresnel lens," parabolic mirror and heliostat.The flat mirror is used in the tower solar power station, has the tracking equipment, the general and the parabolic mirror union use. A flat mirror focuses the sun's rays on a parabolic mirror
The collector with high efficiency is composed of collecting and absorbing device. Sunlight is made up of different wavelengths of visible light and invisible light. The absorption and reflection of different materials and different colors to different wavelengths are different. The ability to absorb sunlight black is the strongest, so the general use of dark or black cotton cloth. White has the strongest ability to reflect sunlight, so summer shirts are mostly light colored or white. Therefore, the use of black can heat. The parallel sunlight is focused on a point, a line, or a small area through a focusing lens. Paper in the sun, no matter how strong the sun, even in the hot summer, will not be lit by the sun. However, if the use of light collector, the sun on the paper, you can ignite the paper. The collector can be divided into several types, such as flat plate collector, condensing collector and plane mirror.
In the use of solar energy, the key is to convert the sun's radiant energy into heat energy. Because the solar energy is more dispersed, we must try to put it together, so the collector is the key part of the solar energy device. Due to different purposes, the collector and the matching type system is divided into many types, names are also different, such as for the solar cooker and cooking for solar water heaters, hot water for the solar dryer, dry goods for solar furnace melting metal, and solar desalination device and so on, the real solar thermal power stations, solar energy.
