Development Prospects of Hydrogen Energy

As a kind of secondary energy with a wide range of sources, clean and low-carbon, and rich application scenarios, hydrogen energy is conducive to promoting the clean and efficient utilization of traditional fossil energy and supporting the large-scale development of renewable energy. In recent years, hydrogen energy and hydrogen fuel cell industry has gradually become an important direction of the global energy technology revolution and the development of future energy green transition.

Features:

Hydrogen energy is recognized as a clean energy, as a low-carbon and zero-carbon energy is standing out. 21st century, China and the United States, Japan, Canada, the European Union and other have formulated a hydrogen energy development plan, and our country has made progress in many aspects of the field of hydrogen energy, and is expected to be the near future, one of the leading countries in the technology and application of hydrogen energy, but also internationally recognized as the most likely It is also internationally recognized as the most likely country to take the lead in industrializing hydrogen fuel cells and hydrogen-powered vehicles.

The development of new energy sources is urgent in today's world because the energy sources used, such as oil, natural gas, coal, and liquefied petroleum gas (LPG), are all non-renewable resources with a limited amount of stock on the earth, and the survival of human beings is inseparable from the energy sources all the time, so it is necessary to look for new energy sources. With the increasing consumption of fossil fuels, its reserves are decreasing, one day these resources, energy will be depleted, which urgently need to find a fossil fuel is not dependent on the reserves of new energy-containing body energy. Hydrogen is just such a secondary energy source. Hydrogen is located at the top of the periodic table, with atomic number 1, gaseous at room temperature and pressure, and liquid at ultra-low temperature and high pressure. As an ideal new energy-containing body energy, it has the following characteristics:

1. The lightest weight: the standard state, the density of 0.0899g / L, -252.7 ℃, can become a liquid, if the pressure increases to hundreds of atmospheric pressure, liquid hydrogen can be changed into metal hydrogen.

3. Best thermal conductivity: 10 times higher than most gases.

4. Abundant reserves: it is estimated that it constitutes 75% of the mass of the universe, and it is mainly stored in the form of compounds in water, which is the most widely used substance on earth. It is projected that if all the hydrogen in seawater is extracted, the total heat it generates is 9,000 times greater than the heat released by all the fossil fuels on Earth.

5. Recycling: The waste from cars that utilize hydrogen energy is just water, so the hydrogen can be broken down again and recycled again.

6. Ideal calorific value: In addition to nuclear fuel, the calorific value of hydrogen is the highest among all fossil fuels, chemical fuels and biofuels, at 142,351kJ/kg, which is three times the calorific value of gasoline.

7. Good combustion performance: quick ignition, a wide range of combustibility when mixed with air, and high ignition point, fast combustion speed.

8. Environmental protection: compared with other fuels, hydrogen combustion is the cleanest, in addition to the generation of water and a small amount of hydrogen nitride will not produce such as carbon monoxide, carbon dioxide, hydrocarbons, lead compounds and dust particles and other environmentally harmful pollutants, a small amount of ammonia will not be polluting the environment after appropriate treatment, hydrogen instead of fossil fuels can minimize the greenhouse effect.

9. Utilization of multiple forms: both through the combustion of heat energy, in the heat engine to produce mechanical work, and can be used as an energy material for fuel cells, or converted into solid hydrogen used as structural materials.

10. A variety of forms: gas, liquid or solid metal hydride, can adapt to the different requirements of the storage and transportation and various applications.

11. Less depletion: long-distance high-voltage transmission can be canceled, in lieu of long and short-distance pipeline transmission of hydrogen, the relative improvement of security, energy ineffective loss is reduced.

12. High utilization rate: Hydrogen eliminates the noise source of internal combustion engine and energy pollution hazards, high utilization rate.

13. Convenient transportation: hydrogen can reduce the weight of the fuel, can increase the payload of the carrier, which can reduce the cost of transportation from the whole benefit of the consideration of the total benefits of society is better than other energy sources.