众文网1.有关风力发电或太阳能发电文章的英文
Fossil energy and nuclear energy are considered nonrenewable energytypes. Nonrenewable energy is obtained from sources at a rate that exceedsthe rate at which the sources are replenished. For example, if the biogenicorigin of fossil fuels is correct, we could consider fossil fuels renewableover a period of millions of years, but the existing store of fossil fuels isbeing consumed over a period of centuries. Because we are consumingfossil fuels at a rate that exceeds the rate of replenishment, we considerfossil fuels nonrenewable. Similar comments apply to nuclear fuels suchas uranium, as we observe in later chapters. Solar energy is considereda renewable energy for the following reasons.1Renewable energy is energy obtained from sources at a rate that is lessthan or equal to the rate at which the source is replenished. In the caseof solar energy, we can use only the amount of energy provided by thesun. Because the remaining lifetime of the sun is measured in millionsof years, many people consider solar energy an inexhaustible supply ofenergy. In fact, solar energy from the sun is finite, but should be availablefor use by many generations of people. Solar energy is therefore consideredrenewable. Energy sources that are associated with solar energy, such aswind and biomass, are also considered renewable.Solar radiation may be converted to other forms of energy by severalconversion processes. Thermal conversion relies on the absorption of solarenergy to heat a cool surface. Biological conversion of solar energy relieson photosynthesis. Photovoltaic conversion generates electrical power bythe generation of an electrical current as a result of a quantum mechanicalprocess. Wind power and ocean energy conversion rely on atmosphericpressure gradients and oceanic temperature gradients to generate electricalpower. In this chapter we focus on thermal conversion.We first discuss thesource of available solar energy, and then consider solar energy technologyin two of its three forms: passive solar, and active solar. The third form ofsolar energy, solar electric, is discussed in the next chapter. We end thischapter with a discussion of solar power plants.。
2.有关风力发电或太阳能发电文章的英文
Fossil energy and nuclear energy are considered nonrenewable energy types. Nonrenewable energy is obtained from sources at a rate that exceeds the rate at which the sources are replenished. For example, if the biogenic origin of fossil fuels is correct, we could consider fossil fuels renewable over a period of millions of years, but the existing store of fossil fuels is being consumed over a period of centuries. Because we are consuming fossil fuels at a rate that exceeds the rate of replenishment, we consider fossil fuels nonrenewable. Similar comments apply to nuclear fuels such as uranium, as we observe in later chapters. Solar energy is considered a renewable energy for the following reasons.1 Renewable energy is energy obtained from sources at a rate that is less than or equal to the rate at which the source is replenished. In the case of solar energy, we can use only the amount of energy provided by the sun. Because the remaining lifetime of the sun is measured in millions of years, many people consider solar energy an inexhaustible supply of energy. In fact, solar energy from the sun is finite, but should be available for use by many generations of people. Solar energy is therefore considered renewable. Energy sources that are associated with solar energy, such as wind and biomass, are also considered renewable.Solar radiation may be converted to other forms of energy by several conversion processes. Thermal conversion relies on the absorption of solar energy to heat a cool surface. Biological conversion of solar energy relies on photosynthesis. Photovoltaic conversion generates electrical power by the generation of an electrical current as a result of a quantum mechanical process. Wind power and ocean energy conversion rely on atmospheric pressure gradients and oceanic temperature gradients to generate electrical power. In this chapter we focus on thermal conversion.We first discuss the source of available solar energy, and then consider solar energy technology in two of its three forms: passive solar, and active solar. The third form of solar energy, solar electric, is discussed in the next chapter. We end this chapter with a discussion of solar power plants.。
3.关于分布式能源的外文和翻译 文献翻译 毕业论文
分布式能源系统究竟如何定义，现在有两种理解：一是靠近用户的小型发电或蓄电系统；另一种是利用天然气作燃料的冷热电联产12万~40万千瓦的大机组。笔者认为，既然称为分布式能源系统应当是第一种理解，第二种只能称为冷热电联产系统，不是分布式能源系统，只有小型的冷热电联产系统可以称为分布式能源系统。
能源辞典关于分布式能源是这样说的：“靠近用户的小型发电或蓄电系统。它可以大大减少输送、分配成本，联产达到很高的效率，减少CO2和大气污染物的排放，提高供电质量和可靠性，更多的终端用户控制。这些优点将使能源工业发生革命性的变化。它采用可再生能源发电，没有或很少大气污染物和CO2排放，采用燃料电池、微型燃气轮机和内燃机，总的排放量也可减少，利用余热可提高能效。目前，分布式发电大多是备用电源，用于医院、工厂、因特网服务器等供电中断代价大的地方，还用作边远地点的独立电源。它对发展中国家有很大好处，因为它的基础设施投入少。