Persuasive Essay focusing on the Pros and Cons of hydrogen cars

Persuasive Essay focusing on the Pros and Cons of hydrogen cars

Introduction

The hydrogen-powered cars have been developed for the past decade, and have been receiving the majority of attention. Hydrogen cars are those that use hydrogen gas as fuel. In this case, there are two key ways in which hydrogen is used; the first way is whereby, hydrogen may be converted to electricity through a process known as hydrolysis, which then powers the electric motors driving the vehicle along. The second way is whereby a convectional engine burns combustible hydrogen gas in place of either petrol or diesel. An adapted car engine, therefore, drives the wheels around propelling the car just like a petrol-fuelled vehicle. The hydrogen combustion engines (HCE) are considered the best solution for the near future. These locomotives were introduced during the time of the establishment of the earliest internal combustion engine. At first, gaseous fuels such as hydrogen were preferred to liquid fuels such as gasoline because they were regarded to be safer to use, due to the low pressures used for the gaseous fuels and the quick dissipation of the gases in case of a leakage.  The primary HCE was developed by Issac de Rivas in 1807. Even though the design had a number of flaws, it is considered to have been more than 50 years ahead of the development of the gasoline engines. This paper, therefore, explains the various reasons why hydrogen-powered vehicles are considered most effective and the hydrogen properties that greatly influence the development of hydrogen internal combustion engines.

Hydrogen cars

Presently, most vehicles are powered by internal combustion engines that either run off gasoline, or diesel. However, the gasoline and diesel engines can not be sustained for longer periods as a source of fuel or in terms of keeping the environment hospitable. Another alternative to gasoline or diesel engines is the electric motors; the electric motors are efficient for transportation applications as compared to internal combustion engines. They can also provide ample power over a large range of engine speeds, potentially eradicating the need for a transmission in a car. However, the electric motor engine has one major disadvantage: energy storage. Usually, the best electric car can barely travel 100 miles on a full battery charge. The present generation of batteries is not able to hold enough energy to power an electric vehicle. The most effective alternative to gasoline, diesel, and the eclectic motor engine is therefore considered to be hydrogen-powered cars. The hydrogen-powered vehicles are categorized into two main classes, hydrogen combustion engines, and hydrogen fuel cells. Through ignition, the hydrogen engines operate like any other ordinary engine, except for the fact that hydrogen is burnt in a cylinder instead of gasoline or diesel. The other alternative is the use of hydrogen fuel cells. This entails combining hydrogen with oxygen. This results in the generation of electricity which is utilized in powering an electric motor, applying the same technology used in present-day electric vehicles. Since the energy is stocked up in the form of hydrogen instead of in batteries, it allows electric cars to carry large amounts of energy. Thus, this enables the standard hydrogen car to go further and to be more potent as compared to a standard gasoline car.

The hydrogen fuel cells overcome the two key defects of the internal combustion engines. First, hydrogen is considered the most ordinary element in the atmosphere. Meaning it is very sufficient. Since hydrogen can be produced from the electrolysis of water, it can be produced anywhere in the country. It can be manufactured anywhere in very large quantities by breaking down water into hydrogen and oxygen. Secondly, hydrogen is considered nonpollutant. A hydrogen car is completely environmentally friendly.  This is because a hydrogen fuel cell only requires hydrogen and oxygen, there are usually no harmful gases produced. Hydrogen used is normally not environmentally damaging for the reason that, it is usually completely contained throughout the process and it never comes in contact with the outside world. Also, in case this hydrogen leaks into the atmosphere, it usually combines with the atmospheric oxygen to form water (H2O), which is also environmentally friendly. Hydrogen, therefore, has the capability of revolutionizing the transport industry. Apart from decreasing pollution, dependency on hydrogen can cure the economic as well as the political woes that result from the dependency on foreign oil.

There are numerous properties of hydrogen that significantly contribute to the growth of HCEs. First, hydrogen requires minimal ignition power. The quantity of power necessary to ignite hydrogen is much lower compared to the power utilized when igniting gasoline or diesel. The positive aspect of this is that it ensures ignition of the lean mixtures and enables prompt ignition. The minimal ignition power however may pose the risk of hot gases or what is known as hot spots on the cylinder used to ignite the fuel, resulting in issues of untimely ignition. Another property is that hydrogen has a small quenching distance. This is the distance from the internal cylinder wall where the ignition flames extinguish. This means that it is difficult to quench a hydrogen flame as compared to other flames, which can increase backfire. Hydrogen is also considered to burn with a high flame speed. This enables the hydrogen engines to reach the thermodynamically ideal engine cycle, which is considered the most efficient fuel power ratio, in instances when the stoichiometric fuel mix is utilized.

 Conclusion

The hydrogen-powered vehicles are those that utilize hydrogen as fuel. As discussed in the body paragraphs above, there are various reasons why hydrogen-powered vehicles are considered most effective and numerous hydrogen properties that greatly influence the development of hydrogen internal combustion engines. There are two main classes of hydrogen-powered vehicles; hydrogen combustion engines and hydrogen fuel cells. Storing energy in form of hydrogen instead of in batteries enables the average hydrogen vehicle to be more powerful and go further as compared to the average gasoline vehicle. The hydrogen fuel cells are also found to eliminate the two key defects of internal combustion engines. The first hydrogen being the most common element in the atmosphere, it is in plenty. Secondly, it does not pollute the environment. In case of a leakage, it simply combines with free oxygen in the atmosphere to form water. There are a number of properties of hydrogen that greatly influence the development of hydrogen internal combustion engines; first, hydrogen requires low ignition energy, secondly, hydrogen has a small quenching distance, and lastly, hydrogen is considered to burn with a high flame speed. Thus hydrogen vehicles have the capability of revolutionizing the transport industry. Adapting the use of hydrogen cars will help minimize pollution and cure the economic as well as the political anguish that results from the dependency on imported oil.