Wednesday, 10 September 2014

Module 2 : Societal Trends

Low Emission Vehicles

            Car has been around since 19th century and technology advancement rapidly evolved the way people travel. Car in the early day uses steam engine before internal combustion was developed. Steam engine actually motivated the Industrial Revolution as they play an important during that era for transportation in the locomotive sector. (Bellows, 2006)
How Steam Engine Work. Source : http://science.howstuffworks.com/transport/engines-equipment/steam1.htm


            Although steam engine was extensively used during the 19th century but it was replaced during the 1920s as internal combustion engine was invented. Vehicles from then on use fuel like gasoline and diesel to propel their vehicles. There are 5 main reasons that people prefer internal combustion engine.

1.     Internal combustion engine able to deliver max power once it starts up while steam engine needs time for the boiler to heat up and develop pressure.
2.     Internal combustion engine has higher output speed compared to steam engine.
3.     Water in combustion engine doesn’t freeze easily as the cooling system has anti-freeze while steam engine’s water system needs to be protected as they are not allowed to freeze.
4.     Internal combustion engine can run continuously until it runs out of fuel while steam engine has a risk of steam supply being cut off easily.
5.     Internal combustion engine develop more torque compared to steam engine. (Robert E. Wilhelm, 2005)
internal combustion engine. Source : http://www.myschoolhouse.com/courses/O/1/143.asp


Since internal combustion engine has been develop and widely used, it helps a lot in the transportation sector but it also causes air pollution towards the environment. In 2010, the number of cars in the world exceeds 1.015 billion compared to 2009 which is 980 million. Relatively this growth is also due to that the number of vehicles growth in China as they contributes to half the growth globally. However U.S. still has the largest amount of cars in the world which is 239.8 million. China is still 16 times less than U.S but the car population still exploding. (Tencer, 2011)

The increase of cars also increases the usage of fossil fuel. As we know petrol is getting lesser day by day and price of petrol is hiking massively in recent years. Based on the current situation the human society is very dependent on fossil fuel. For example, in Britain they consume about 7 million tonnes of crude oil just to import food which is a huge amount. (Rhodes, 2013) We still haven’t added in the consumption of petroleum on public transport and passenger vehicles.

As fossil fuel is reducing everyday vehicle manufacturer are trying their best to develop more fuel efficient vehicles. The improvement of technology allow car manufacturer to develop new engine technology such as direct fuel injection, direct injection turbo, variable cylinder displacement, variable valve timing and lift and hybrid vehicles. (Csere, 2010) The introductions of such new technologies not only to reduce fuel consumption but also to reduce exhaust emission to protect the environment.


Social Impact of Low Emission Vehicles

            As we all know that global warming is a huge issue and emission standard is getting more stringent.  One of the most well-known Emission standards worldwide is ‘Euro’ Standards. This year 1st September 2014 we are moving in to Euro 6 level standard. This means that all new cars in the European Union need to comply with this standard by 1st September 2015. Since Euro emission standard is being accepted internationally new cars being manufactured around the world will need to start comply with. (European Automobile Manufacturers Association, 2013)


Euro emission standard. Source : http://www.acea.be/uploads/news_images/Eurostandards.png
           The introduction of low emission vehicles will have some negative impact socially for the time being as there is a shortage of skilled technician to diagnose and repair such advance vehicles. This problem is much more focus towards the more advance hybrid vehicles as they have much more complicated electrical on board circuit and there is very high possibility one might get electrocuted if they don’t follow proper procedure. It is important that existing companies sent their staff to attend training so they are prepared for the incoming technology advance vehicles. This could prevent the current middle aged and older generation technician or mechanic from losing their job which is also a huge social problem. (Woodyard, 2012)

            Implementation of new technologies also will give unwanted problems to owners of such technologically advance cars. These cars may not be brand new as they people could still it from grey import market such as from Japan or Singapore. While they might look decent on the outside but internally we can’t assume is the similar as sold by official dealers. This is because those certain models are specifically design for that particular market and not suitable in other countries. So if people bought these cars there are chances that it might breakdown and reliability of new technology is still an issue. If problems persist car owners will need to spend more time on visiting workshop which most owners think is a burden. (Biddle, Car Buyers' Guide: Why some engine issues crop up, 2014)

            Low emission vehicles also allows people to realise how important is low emission vehicles towards the environment as the cars they buy will produce less tail pipe emission but also much more fuel efficient compared to older cars. As cars get more fuel efficient people also pay less for fuel in the long run. One thing we all do know is that fuel prices will fluctuate so is better to have a fuel efficient vehicle to keep the running cost down. (Biddle, Make sure your first car gets you there and back, 2013)

            Based on news in The New Zealand Herald, it is said that New Zealand is planning on a 40% reduction in emission of greenhouse gases by 2040. Since cars are also one of the contribution of greenhouse gases so it is important for New Zealand government to convince people to use low emission vehicles and understand the benefits of it. (Kenworthy, 2013)
           

References

Bellows, A. (2006, October 24). The Last Great Steam Car. Retrieved from Damn Interesting: http://www.damninteresting.com/the-last-great-steam-car/
Biddle, J. (2013, February 6). Make sure your first car gets you there and back. Retrieved from The New Zealand Herald: http://www.nzherald.co.nz/motoring/news/article.cfm?c_id=9&objectid=10863542
Biddle, J. (2014, March 30). Car Buyers' Guide: Why some engine issues crop up. Retrieved from The New Zealand Herald: http://www.nzherald.co.nz/motoring/news/article.cfm?c_id=9&objectid=11227432
Csere, C. (2010, April). The Future of the Internal Combustion Engine. Retrieved from Car and Driver: http://www.caranddriver.com/features/the-future-of-the-internal-combustion-engine
European Automobile Manufacturers Association. (2013, August 8). Vehicle compatibility with new fuel standards. Retrieved from ACEA: http://www.acea.be/publications/article/vehicle-compatibility-with-new-fuel-standards
Kenworthy, A. (2013, October 6). Climate change and how NZ cities are preparing for it. Retrieved from The New Zealand Herald: http://www.nzherald.co.nz/climate-change/news/article.cfm?c_id=26&objectid=11135901
Rhodes, P. C. (2013, July 29). What Happens When the Oil Runs Out? Retrieved from Oilprice.com: http://oilprice.com/Energy/Crude-Oil/What-Happens-When-the-Oil-Runs-Out.html
Robert E. Wilhelm, J. (2005, October). Rankine or Otto Cycle, Which is better?? Retrieved from Stanley Motor Carriage: http://www.stanleymotorcarriage.com/GeneralTechnical/RankineOtto.htm
Tencer, D. (2011, August 23). Number Of Cars Worldwide Surpasses 1 Billion; Can The World Handle This Many Wheels? Retrieved from The Huffington Post: http://www.huffingtonpost.ca/2011/08/23/car-population_n_934291.html
Woodyard, C. (2012, August 30). Serious shortage of skilled auto mechanics looming. Retrieved from USA today: http://usatoday30.usatoday.com/money/autos/story/2012-08-28/shortage-of-auto-mechanics-looms/57414464/1



Thursday, 28 August 2014

Module 1 : Technology Through History

Airplane

Introduction
            
In this 21st century we all do know that airplane plays an important role in our lives. Everyday lots of people are travelling by airplane to go to different location such as different countries. Airplane is so important now is that it is able to shorten travel distance and able to allow people to travel leisurely. Flying now is so cheap that sometimes it is cheaper to use other means of transportation. For this module I will be talking about how aircraft technology has evolved and the social impact towards society.

History
           
Before people are able to travel by air, we are only able to travel by land or sea. On land transport people started with horse carriage, bicycle, train, motorcycles and cars. (Davis, 2013) While for sea transportation it started from a simple raft and as technology improved boats is develop and lastly ship like ocean liners. (Thomas, Ron, & Shirley, 2012) Although land and sea transport are sufficient but they are quick enough for people to travel long distance.  Ships or ocean liners are able to do cross continent travel but it doesn’t have the speed to reach at a short time. For example if there is no airplane a trip from London to New York will take 3 days and 12 hours by crossing the Atlantic while traveling thru airplane reduce the time to less than 8 hours. (Decker, 2008)


Airship with steam engine
source from : http://www.kidcyber.com.au/topics/airtransport.htm

When airplane has not been invented people actually have tried built something so that they can fly in the air. The very 1st successful attempt was in 1783 where Joseph and Etienne Montgolfier built the first balloon that can carry people in the basket. This is how hot air balloon started. Based on the similar concept, in 1852 Henri Giffard from Paris made one with a steam engine fitted on it. On that time the airship can only fly forward. Later on in 1900 it was being called Zeppelins after their inventor Ferdinand Von Zeppelin. (Thomas R. &., 2009) This has proved that people are capable of flying but the speed is still very slow.
           
First flight of Wright Brothers at 1903 December 17
Source from : http://www.kidcyber.com.au/topics/Wrightbros.htm
At 1903 the Wright Brothers made the 1st engine powered plane called “The Flyer” and it manage to fly for 12 seconds. Although they have managed to invent something that could fly but it is still like gliding not actual flying. Later on they managed to fly for 24.5miles in 39minutes. (Smithsonian National Air and Space Musuem) From there onwards plane started to be intensively developed.
            
World War II jet fighter
Source from : http://upload.wikimedia.org/wikipedia/commons/f/f1/Ryan_FR-1_Fireball_VF-66_North_Island_1945.jpg
Development of airplane improved drastically since World War I and World War II as people started to use it as military purpose.  During World War I, Italy first discovered that they could bomb enemy and it became a major weapon in the war. (Chavis, 2010)
Modern Jet Figther
Source from : Museum of Transport and Technology



Social Impact

            Airplane is so important now that it is considered as a major transport for us to travel. For cross continent travel people used to take Ocean liners but since 1960s it has been replace by airplanes and ocean liners loses their existence. The invention of airplane let people to travel or courier something around the world within 24hours. (Decker, 2008)
Airbus A380 world largest passenger jet
Source from : http://www.aircraftcompare.com/helicopter-airplane/Airbus-A380/60

            Since airplane are able to travel fast they actually encourage people to travel as there is more and more budget airlines to meet the people’s demand. Furthermore the idea of air mail quickly caught up and air freight became more popular as well. Although the cost of air freight is more expensive but if someone is in urgent it will be the most express way to deliver stuff. (Wang, Gotterba, & Wu)


DHL a global courier
source from : http://www.businessdailyafrica.com/Corporate-News/DHL-strikes-deal-with-union/-/539550/2405462/-/4l1mn9z/-/index.html

            The increase usage of airplane also improves the economy as the demand increases. If there is good economic activity it encourage circulation of goods such as express deliveries, business trips and also social trips like people going on a vacation. This actually stimulates economic growth as it allows people to interact with others easily but also allow people to deal with business in a much efficient way. (Tam & Hansman, 2002)

            Although airplane allow us to travel in comfort we still need to consider that it still uses combustion engine and it contributes towards air pollution and it causes global warming. It is estimated that aviation contributes 5% of the total global climate pollution. Scientist also expects that the carbon emission will double by the year 2030 and could increase health issue towards the society. (Flying Clean)

Conclusion

            The airplane can be one of human most important invention as it has hugely changes the way of our transportation but also speed up our travel time. There is a saying that when airplanes are introduced marks the death of distance. (Decker, 2008) Airplane might have help us improve our life a lot but at some point it is not a perfect solution and there is still improvement needed to be done.

References

Chavis, J. C. (2010, November 16). The Significance of Airplane Development. Retrieved from Bright Hub: http://www.brighthub.com/science/aviation/articles/64040.aspx
Davis, J. (2013). History of Land Transportation. Retrieved from timetoast: http://www.timetoast.com/timelines/history-of-land-transportation--3
Decker, K. D. (2008, June 04). Life without airplanes: from London to New York in 3 days and 12 hours. Retrieved from Low-Tech Magazine: http://www.lowtechmagazine.com/2008/06/ocean-liners.html
Flying Clean. (n.d.). Issue Briefing: Impacts of Airplane Pollution on Climate Change and Health. Retrieved from Flying Clean: http://www.flyingclean.com/impacts_airplane_pollution_climate_change_and_health
Smithsonian National Air and Space Musuem. (n.d.). Inventing a Flying Machine. Retrieved from Air and Space: https://airandspace.si.edu/exhibitions/wright-brothers/online/credits.cfm
Tam, R., & Hansman, R. J. (2002). IMPACT OF AIR TRANSPORTATION ON REGIONAL ECONOMIC . Retrieved from dspace: http://dspace.mit.edu/bitstream/handle/1721.1/35884/atio_tamhansman.pdf
Thomas, R. &. (2009). Airships & Balloons. Retrieved from kidcyber: http://www.kidcyber.com.au/topics/airshipballoon.htm
Thomas, Ron, & Shirley, S. (2012). SHIPS: A Timeline. Retrieved from kidcyber: http://www.kidcyber.com.au/topics/shipstimeline.html
Wang, H., Gotterba, C., & Wu, J. (n.d.). Airplane. Retrieved from AngleFire: http://www.angelfire.com/co/pscst/airplane.html