A few days ago, the Energy Community published a study focusing on the production and use of green hydrogen, which will reportedly play an important role on the road to achieving climate neutrality.
The countries of Western Europe, Australia and Japan can boast of a developed hydrogen strategy and important current or planned projects concerning this green energy source, while the same cannot be said for a good part of Africa and Asia.
Hydrogen has numerous advantages that bring it to the center of attention when it comes to renewable energy sources. Among other things, the study highlights the abundance of this element because it is found in many compounds from which it can be easily extracted and used.
In addition, hydrogen is characterized by a high gravimetric energy density. During the oxidation of hydrogen, 120 MJ / kg is released, which is almost three times the energy density by mass of traditional fossil fuels (methane 55.6 MJ / kg, gasoline 46.4 MJ / kg, diesel 45.6 MG / kg, crude oil 42 MJ / kg and coal 26-33 MJ / kg – see middle column of Table 1).
Also, the use of hydrogen does not result in CO2 emissions, while the storage of this fuel is relatively easy as it can be stored in large quantities over a long period of time.
What certainly stands out as an advantage of hydrogen is its wide applicability, and in practice it has been shown that for certain purposes it is far more practical than alternative fuels.
Current and future use
Today, hydrogen is mostly used for industrial processes such as ammonia synthesis, oil processing and food production, the study states. However, it is certain that hydrogen will slowly infiltrate a number of sectors that currently use fossil fuels, all the more so as this transition will require small adjustments in process technology.
For example, hydrogen could be used in the synthesis of ammonia to produce lower carbon fertilizers, as well as to produce fuels with reduced carbon dioxide emissions. This, as stated in the study, will most likely be the first use of hydrogen through which this pure source of energy will be further expanded and promoted.
Hydrogen can also be used as a heat source in industrial processes, especially where high flame temperatures are used. Possible applications include the production of lime and cement where high temperatures and significant input energy are required. While coal, coke or gas are used today, hydrogen could be used as a substitute for these fossil fuels significantly reducing the carbon footprint of the industry.
Hydrogen-powered vehicles are expected to have additional advantages over electric vehicles in commercial applications such as buses and trucks. Both the range and time of refueling are crucial for making technological choices in these sectors and hydrogen is currently considered the most suitable fuel for heavy trucks.
In addition, the study states that hydrogen is suitable for powering trains, ships, airplanes and heavy industry such as steel production.
Source: Energetski portal Srbije by www.energetskiportal.rs.
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