Wednesday, 27 May 2009

Hydorgen car













Nowadays, petrol and diesel cars are the common cars seen around the world. It is found that while using petrol and diesel cars, a huge amount of oil is being burnt which is bad for the global warming problems. However, engineers are under the research of implementing a new innovation of solving this cause, which is known as hydrogen cars. A hydrogen car is a vehicle that uses hydrogen as its main power (Wikipedia). Let us now discuss the advantages and disadvantages of hydrogen fuel as a solution to the problem of petrol and diesel fuel.


The most important problem of fossil fuel is that it produces a huge amount of sorts of pollutants and toxic air pollutants, such as carbon dioxide which is the mean reason of global warming. Also it produces nitrous oxide which is an anesthetic gas and carbon monoxide which inhibits the blood's ability to carry oxygen to body tissues including vital organs such as the heart and brain (Wikipedia).
Fossil fuel is extremely costly and it s not available in many countries like US, who imports oil from middle east countries, so by using hydrogen car system, oil imports countries will save a lot of money.

However there are some disadvantages of hydrogen cars. When they are producing the hydrogen fuel cells also a big amount toxic air pollutants are produced. That means the effect of pollutions that are produced to produce a hydrogen cell has the same effect of pollution of a fuel car (Swain). To produce hydrogen fuel cell without toxic air pollutants will cost a lot of money.


Regarding the advantages of hydrogen fuel cell the biggest advantage is no more toxic emissions .Unlike petrol and diesel cars hydrogen cars will reduce greenhouse emissions and improve the quality of the air to solve the global warming issue. Another advantage is it that it works only by using electricity by adjusting wires and levers, which means there is no need for a steering wheel or a pedal (Dyer). Another advantage is the independence for oil imports countries. We get the hydrogen for the fuel cells from water by a method called (electrolysis).the process is simply splitting water (H2O) into its atomic components (hydrogen and oxygen) using electricity.


In conclusion, I think hydrogen engines are better than furl engines because it is friendly with the environment, but in the same time it is more expensive and is not as efficient as a fuel engine. Regardless it is still better because what new power technology is all about finding a new power sources replacing petrol as a fuel, and which is friendly with the environment which applies to the hydrogen.














Bibliography:

D SWAIN. The Disadvantages of Hydrogen Fuel Cell Cars - Associated Content." Associated Content - associatedcontent.com. 27 May 2009 .


Dyer, Nicole. "Clean-mobile. (Physical News).(General Motors research of hydrogen-propelled engine)." 25 Feb. 2002.
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Hydrogen Cars Vehicles and Infrastructure. 21 May 2007. 27 May 2009 .


"Hydrogen vehicle -." Wikipedia, the free encyclopedia. 27 May 2009 .

Thursday, 7 May 2009

cool city











The Cool City maybe the best solution, to this global crisis that we are facing in today’s world. Transportation and Building are the most CO2 produce. Since time we as humans have adapted to climate change, but if we don’t reach a solution on how to deal with this current issue then the world we now maybe lost forever. Masdar city which is in Abu Dhabi is one of these cities. In this essay I am going to argue about some issue of these cities.



The pollution and gas emission that we are causing the earth will have an effect not only on our lives but the future generation as well. But the problem is that the pollution will increase and the cool cities will not be able to hold all the people .Moreover high pollution means more need of huge power of electricity in order to assist their life which is not able in cool cities.


The life style will be totally different in transportation in the cool cities. With the time proceeding the Monorail system will inspire more people to leave there cars and take public transportation. They will also be looking into more multi-modal options for transportation using cars work with a new catalytic converter which reduce harmful gases and fuel consumption, (Cavanaugh).










However it s so expensive to live in the cool city because of the solar energy .As (gregor) said Solar power is getting more affordable as technologies improve. But it's still very expensive that means poor people would not have the chance to live there.


In conclusion I agree with the idea of cool city solving the global warming but I think it does not suite all the society.





Bibliography:
Cavanaugh, James. "Why My City is Cool." Cool Cities. 1 Dec. 2007. 6 May 2009
http://www.coolcities.us/cityProfiles.php?city=1428&state=AZ.


Gregor, Katherine. "Cool City: Solar Subtleties." The Austin Chronicle. 6 Mar. 2009. 6 May 2009
http://www.austinchronicle.com/gyrobase/Issue/story?oid=oid%3A751802.