论文部分内容阅读
太阳能是一种取之不尽用之不竭的天然能源,地球上所有的能量几乎全部来自太阳的电磁辐射。木材、煤炭、石油、天然气都是经过转换后的太阳能,风和水力也是如此。但目前人们常说的太阳能利用则是指除石油、煤炭等所谓常规能源以及核能以外的太阳辐射能。太阳是一个表面近6000℃的高温辐射体,地球所收集到的太阳辐射能,大约是其总辐射量的百亿万分之一。就是这么一个微小的一部份,一年中地球的接收量就等于目前已知的地下总储存能量(包括铀在内)的5～6倍,是目前人类一年所消耗的能量的三万多倍。如果我们用占地表面积千分之一,效率为5％的收集器来收集太阳辐射能,则每年可获
Solar energy is an inexhaustible source of natural energy. Almost all of the Earth’s energy comes from the sun’s electromagnetic radiation. Wood, coal, oil, and natural gas are converted solar energy, as are wind and water. However, what people often say about solar energy use is solar energy other than conventional energy such as oil and coal, and nuclear power. The sun is a high-temperature radiator with a surface temperature of nearly 6,000°C. The solar radiation energy collected by the earth is about one hundred millionth of a millionth of its total radiation. It is such a tiny fraction that the amount of earth received in one year is equal to 5-6 times the total known underground energy (including uranium), which is currently 30,000 yuan of energy consumed by humans in a year. Multiple times. If we collect solar radiation using a collector that occupies one-thousandth of the surface area and has an efficiency of 5%, we can obtain