Essay On Air Pollution

The Hydrogen Fuel Cell could revolutionize the world. This ingenious technology, which creates electricity from the chemical reactions of hydrogen and oxygen has, in its 150-year history, passed many of the critical tests along the path from invention to innovation. Recent developments in fuel cell technology and concurrent developments within the energy and automotive industries have brought the world to brink of the fuel cell age and the hydrogen economy.

We all know that fossil fuels and harsh burning of chemicals are bad for our environment. Through the cause of global warming and the depletement of the atmosphere it is apparent. From the start of coal burning all the way through nuclear

The author states that fuel cell engines have several advantages over internal combustion engines and will replace them and provides three reasons. In contrast, the professor states that the reading argument is optimistic about the fuel cell engine and it won't replace the internal comustion engines and she opposes each of the author's reasons.

2. What are some of the advantages of using a fuel cell? What fuels can be used?

This source mainly concentrates on the use of hydrogen fuel cells as an alternative to the United States dependency on foreign oil. It elaborates on the negatives of our countries reliance upon external sources for the vast majority of our power production needs, and suggests that hydrogen fuel cells are the answer to a sustainable energy future. The author is a writer for CQ Researcher who concentrates on energy, environmental, and defense issues. While the article is mainly geared toward individuals interested in the automotive industry and the applications of hydrogen fuel cells in vehicles, it does an excellent job of contrasting oil based

Federal Government and oil companies put forward hydrogen fuel cells as a better alternative to gas and battery electric cars. In contrast, interviews with two hydrogen experts gave details why fuel cell vehicles are not likely to be available for another 15-20 years if ever, whereas battery electric technology is available now, has been rapidly improving since the mid 1990s and is cost effective.

Another area of technology that the automobile industry is working on is fuel cells. Even though it is predicted that automobiles using fuel cells will not be released until 2010, Fuel Cell Vehicles (FCV), may be the next revolutionary idea in automobiles. FCVs reflect a completely new way of thinking about automobiles. FCVs use electric

Honda has already produced a hydrogen fuel cell concept car they claim is “overall 64% energy efficient”. To put this into perspective in the average gasoline combustion engine “only about 20 percent of the thermal-energy content of the gasoline is converted into mechanical work”, making it 20% energy efficient [5]. This new line of cars could bring about jobs in the automotive industry and all industries that branch from it. As of right now the commercial market for hydrogen gas produced from the use of fossil fuels is at about $100 billion. A majority of this hydrogen goes into producing fertilizers and petrochemicals [1]. All it would take is an inexpensive source of green hydrogen, such as the one recently discovered, to completely change this industry.Overall hydrogen has the ability to bring about jobs and continued advancements in every market and industry touched by it. This could be just about every industry when considering how important transportation and shipping are to the economy; hydrogen would give them an inexpensive fuel for transport. Hydrogen fuel could do this all the while solving our most important problem of finding a renewable energy source.

Fossil energy sources- such as oil, coal, and natural gases are become the major source for the energy which are formed from died prehistoric plants and animals buried in the layers of land over a million of years. But there are lot of impacts on the environment by the use of fossil fuels through combustion resulting in the emission of greenhouse gases. Over the past 20 years three-fourths of human-caused emissions came from the burning of fossil fuels.

small, positively-charged proton with a negatively-charged electron orbiting very fast, a model analogous to the earth orbiting the sun, or the moon orbiting the earth. Fuel cells take advantage of this structure. Using a membrane and a catalyst, hydrogen is broken up into a proton and an electron. While there are many different membrane models for fuel cells, the most appropriate one for car travel is the Polymer Electrolyte Membrane (PEM, also called the Proton Exchange Membrane). It is called this because protons are able to easily pass through the membrane. However, because the membrane does not allow electrons to pass through it, the electrons take a detour through an electrical circuit to the other side of the cell. If hydrogen is supplied into the cell at a steady rate, the stream of electrons in the electrical circuit creates electric power. However, like all batteries, you need a positive end (cathode) and a negative end (anode); in other words, the hydrogen atoms must have a “reason” to make this electrical circuit. And what is this reason? Oxygen. With oxygen at the other end, hydrogen is more than willing to create this current so that it can bind and form H2O, or water on the other end.

The human race is in the midst of an energy crisis. The gasoline used around the world is currently a non-renewable resource. As the title suggests, the gasoline will eventually be totally consumed in part by the gas guzzling vehicles common today. For this reason, scientists have spent decades researching and developing alternative sources of fuel in order to power daily life on Earth for many years to come. There is a wide array of renewable fuel sources in use presently. These alternatives vary in efficiency, affordability, and many other aspects. Hydrogen powered and electric powered vehicles are two comparable alternatives that have increased in popularity and functionality in recent years and will continue to do so in the near future (10 Reasons, 2015).

Fossil fuels are an important part of life. When you turn on the lights, watch TV, or take a shower, the electricity that you are using is being generated by fossil fuels. The three types of fossil fuels are coal, crude oil, and natural gas. They all take millions of years to form, so they are considered to be “non-renewable”- eventually, the fossil fuels will all be used up. One dangerous biological effect of using fossil fuels is ocean acidification. Extracting and transporting fossil fuels can also be very dangerous. Environmentally damaging accidents such as groundwater contamination, land subsidence, and oil spills occur frequently. Global warming is another possible environmental effect. Fossil fuels have a crucial role in modern

Fossil fuels are essential to life on earth as we know it today. Our world would certainly be much different if it weren’t for such seemingly simple things such as coal, oil, and natural gas. These basic elements of life on earth may not seem like a major concern to some people until we put into perspective how they have shaped our world today. Civilizations have been built, economies have risen and crumbled, and even wars have been fought over these precious fossil fuels. However, these fossil fuels serve us in ways we may never truly appreciate, as long as we use them as recklessly as we do now. The major entity about fossil fuels is concerning their longevity and permanence in our world, and we all know, they will be around forever.

For years man has relied on energy in order to be successful in life. The industrial revolution relied on coal for the new inventions brought into the world. Life as has never been the same since then. However since that time, there has been little done to improve on energy efficiency and humans still primarily rely on fossil fuels for energy. For over a hundred years the Earth has become more polluted and dirtier than ever before. Now, with new, innovative technology there is an opportunity to change that and to rely on renewable, cleaner sources of energy. The main source of energy for the world should be alternative energy instead of energy from fossil fuels.

In order to understand the why behind the need to change from fossil fuels to hydrogen power, it is necessary to understand what that power is and how it works. Hydrogen is the most abundant and simplest element on earth. It is most commonly found as part of water. In its pure gaseous form it is extremely light, but when ignited in this state releases a large amount of energy in an explosion. In this violent reaction the hydrogen combines with free oxygen molecules in the atmosphere and creates water vapor. This is similar to the way gasoline is combined with air and ignited in an internal combustion engine in the cars used today and like with gasoline, the combustion of hydrogen has risks. In addition to the risk, some of the energy released in the reaction is lost in the form of sound and heat. As an alternative to burning, these same gases can be combined with the use of catalysts to extract the free electrons produced as liquid water is formed(Popovici and Hoble Dorel). Using cables connected to a fuel cell such as this, those electrons go through a circuit, generating electricity. This is more efficient than combustion because less energy is wasted in the form of sound and heat. Going further, greater efficiency for this reaction can be had the lower the temperature it is allowed to take place at, with 83% power at 25◦C(77◦ F)(Popovici and Hoble Dorel). As fuel cells are created with better heat management and