论文部分内容阅读
氢能体系是近年来国际上一个极为重要而又十分活跃的科学研究领域。在氢能体系的总设想中,利用太阳能、核能、地热、风能等某些一次性能源,分解水制取氢,氢作为干净的人造燃料(在体系中成为二次能源)加以贮存、输送或直接投入工程应用。图1是氢能体系示意图。人们所以选择氢作为二次能源(又称载能体),一方面因为氢的发热值高(低热值为33.9千卡/公斤),约为汽油热值的三倍,而且燃烧的产物是水蒸汽,无污染;另一方面,氢的贮量丰富,水就是取之不尽、用之不竭的氢源。因此科学家们预言,到廿一世纪,氢将成为主要的供能方式。可是,如果没有一种方便的贮存氢气的办法,氢就不可能作
Hydrogen energy system is an extremely important and very active field of scientific research in the world in recent years. In the general assumption of hydrogen energy system, some primary energy sources such as solar energy, nuclear energy, geothermal energy and wind energy are used to decompose water to produce hydrogen and hydrogen as clean artificial fuel (become secondary energy in the system) to be stored, transported or Directly into engineering applications. Figure 1 is a schematic hydrogen energy system. People choose hydrogen as secondary energy (also known as energy carrier), on the one hand because of the high calorific value of hydrogen (low calorific value of 33.9 kcal / kg), which is about three times the heating value of gasoline and the product of combustion is water Steam, pollution-free; on the other hand, rich hydrogen reserves, water is inexhaustible source of hydrogen. So scientists predict that by the 21st century, hydrogen will be the main source of energy. However, hydrogen can not be made without a convenient way to store hydrogen