• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

A hydrogen Vehicle

Extracts from this document...


                        Science Homework: Hydrogen Vehicles (Debate)

A hydrogen vehicle is a vehicle that uses hydrogen as its on-board fuel for motive power. Hydrogen fuel cell cars exploit the significant chemical energy in hydrogen through a process of electrochemical conversion. In this process of fuel-cell conversion, hydrogen is reacted with oxygen to produce water and electricity, the latter of which is used to power an electric traction motor.

Many articles read covering specific fuel cell cars point out the cost of the car, usually in the millions of dollars. But this dollar figure has no relation to any hydrogen fuel cell production vehicle that will eventually be offered for sale. These research cars are hand-built and use experimental technology created in limited amounts. The most expensive material used in these cars is the platinum covering the nodes in the fuel cells. Other than that, the car consists of motors, wheels, a frame, and body. And there are even fuel cells under development using different, cheaper materials. Evaluating this I would say it is fair that hydrogen fuel cell cards are expensive because there are limited amount of them and are experimental. But in the future, if it were made in a world-wide scale I would expect the prices of them to fall down because in the past combustion cars were only for the wealthy but them everyone could get them. However unfortunately there is no readily available source of molecular hydrogen (H2)

...read more.


Hydrogen in cars is less dangerous than gasoline. Fuel cell critics point out that hydrogen is flammable, but so is gasoline. Unlike gasoline, which can pool up and burn for a long time, hydrogen dissipates rapidly. Gas tanks tend to be easily punctured, thin-walled containers, while the latest hydrogen tanks are made from Kevlar. Also, gaseous hydrogen isn't the only method of storage under consideration--BMW is looking at liquid storage while other researchers are looking at chemical compound storage, such as boron pellets. It is true that hydrogen is safer than gasoline in a way as dissipates very quickly. It is also a relief that the latest hydrogen tanks are made of Kevlar even though it is an expensive material and car companies are researching for better ways to store hydrogen. But other people point out also that hydrogen fuel cell containers are weak/dangerous at present. The storage issue is a potential show-stopper – it's clear that you can't build a hydrogen economy around high-pressure on-board storage. It would be fatal to H2 cars if they were prematurely introduced into the marketplace with this inadequate storage technology. I don't think your average soccer mom or dad wants to be a foot away from 5000- or 10,000-psi hydrogen canisters--which in industry are treated with great respect, put in separate facilities with blow-out walls, and so forth.
...read more.


So my final message is many people know hydrogen is clean but  hydrogen vehicles might sound dangerous at first because of its damaging properties, however since it is just newly come out and is experimental we must have faith that further in the future it would be greatly improved.

...read more.

This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Electricity and Magnetism essays

  1. The Efficiency of an Electric Motor.

    98.93312 7.832 169.085696 55.946 12.102216 3 7.175 25 188.362912 1104.8 84.8079 7.858 132.7428 56.288 11.097716 3 7.175 25 151.015516 1004.8 66.069432 7.968 103.904064 56.412 10.093216 3 7.175 25 121.17228 904.8 53.1036 8.316 73.01745 57.179 9.088716 3 7.175 25 89.281166 804.8 40.1016 8.784 51.7979 57.843 8.084216 3 7.175 25 67.057116 704.8

  2. I am going to build a sensor for a vehicle fuel gauge. It will ...

    There are three main types of potential dividers: A chain of resistors- this is when there are many resistors connected in parallel to each other. Potentiometer with resistive track- this is one resistor with a moving contact which changes the voltage.

  1. Investigation on Photovoltaic Cells

    * I also changed how long I would wait to take the reading. In my original method I decided 5 seconds but changed this to 10 seconds so the reading would have longer to set. * I also changed the various surface areas I was measuring.

  2. Renewable and non-renewable fuels

    In icy conditions ice can form on the blades and then break off and cause damage. Because of their height there are also problems with birds flying into them and low flying aircraft they can also affect radar equipment Non-renewable resources and their advantages Non-renewable recourse are limited to four factors: 1)

  1. The Car Crisis.

    How can you do this? You can use deciduous trees or bushes in front of the south-facing windows. These plants lose their leaves in the winter and allow most of the sun in, while in the summer, the leaves will block out a lot of the sunshine and heat.

  2. Investigating The Heat Of Combustion Of Alcohols.

    We then repeated this procedure for all four alcohols, doing each alcohol twice. After each test the water was tipped away and we measured out 50mm of water from the tap. The copper calorimeter was also cleaned to ensure all the soot was removed making the test as fair as possible.

  1. Chessington World of Adventure.

    The application of the concept at chessington was with the ride called vampire, which is explained below VAMPIRE This is a track ride, which can be called a roller coaster. It was made by arrow dynamics in Utah USA, from 1989-1990.

  2. Efficiency of a Motor

    * The length of cotton must be kept the same as the distance affects the kinetic energy. The shorter the cotton is the faster the load will lifted, such a change will therefore produce results that are not relevant to each other.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work