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Are Electric Cars better for the Environment?

Extracts from this document...

Introduction

Hamza Khalif 11E Are Electric Cars better for the Environment? Introduction In this case study, I will be talking about whether electric cars are better for the Environment. In this discussion I would be talking about the pros and cons about electric cars and the impact it has on the Environment. The Science behind electric cars A non-electric vehicle contains an internal combustion engine and related parts such as a fuel tank, fuel lines, cooling system, and an exhaust pipe system. Electric cars, on the other hand, are more powerful directly by electricity rather than a combustible fuel. An electric car has a rechargeable battery, at least one electric motor, a controller that feeds from electricity to the electric motor(s) based on input from the accelerator pedal, and a charging system. In a modern electric passenger car, the electricity to power the electric motors is as long as by a rechargeable battery pack, an onboard gasoline-engine generator, or a hydrogen fuel cell. In most electric cars, such as the Nissan Leaf, electricity is supplied by a rechargeable battery pack that can be plugged into one of three power sources: a standard household outlet, an advanced home charging system that cuts recharging time in partial, or a quick-charge station provided by a city or public value. When an electric car's battery pack needs to be recharged, plugging the car in to one of these three sources is as easy as plugging in a tough extension cord. It can take as little as one hour to recharge the car using a high-voltage public quick-charge station or as long as 12 hours using a standard household exit. ...read more.

Middle

gas-fired electricity generation was reduced.[2] Electricity from coal, which is the most polluting way to generate power, drastically reduces the environmental advantage for EVs. Because China, for example, generates almost all its power from coal, life cycle analysis of EV cars in China shows they are far more polluting than conventional cars.However in a country like Norway, where most power is generated from hydroelectricity, EVs fairly quickly begin to outperform conventional cars in terms of their overall environmental impact. [2] Majeau-Bettez explains it thus: "For a European average power generation mix, and if you use your car for 150,000km, you could hope for a 25% improvement [in global warming impact] relative to a gasoline car. It seems that the UK has a more intensive coal and natural gas mix so the benefits would be somewhat less than that."[2] Potential Benefits for Owners ?Lower operating costs ?Lower maintenance costs ?Quiet ride ?Convenience (home charging for all-electric and plug-in hybrid vehicles eliminates/reduces need to fill-up at gas stations) ?Opportunity to make a ?green? choice Potential Benefits for the Environment ?Reduced emissions of harmful air pollutants ?Increased energy efficiency ?Reduced oil dependency ?Reduced vehicle noise ?Reduced emissions of greenhouse gases Clean cars for the future? [4] For over 100 years, cars have been pouring fumes and soot and poisonous gases into our lungs. Now new developments in batteries and electric motors offer a promise of a cleaner future. Electric cars produce zero CO2 emissions when running, and they don?t emit nitrous oxide or produce other particle emissions either. ...read more.

Conclusion

Batteries are gradually getting better, which could result in electric cars being used for longer. However, as petrol and diesel engines are also improving, the relationships between the different types of vehicles are not constant. . This graph shows us that the electric car is second to produce the most carbon foot print on transportation. Conclusion To conclude on this argument I personally believe that electric cars are better for the environment. At present, for the majority of the country, neither electric vehicles nor comparable gasoline-powered vehicles holds a solid advantage over the other in cleanliness. The balance will probably not change any time in the near future as the problem with electric vehicles is not inbuilt to them, but rather to the means by which we generate our electricity. Although electric vehicles offer some convincing advantages over internal combustion engine vehicles in terms of pollution management, the real advantage of electric vehicles lies in the future when more electricity is produced from cleaner sources. I found out that Hybrid vehicles can reduce fuel costs by 20-40% compared to conventional vehicles [2]. For the next age group of electric vehicles that can be recharged from the electricity grid, the potential energy cost savings are even greater. Based on this evidence this means that without a good national grid with cleaner energy source the risk of batteries to be recharged will be 0% and the global warming and environment pollution will increase in the future. By build a grid which could give an enormous energy without effecting the environment or people, the energy cost could start to fall and could make savings for people. ...read more.

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