Life Cycle Analysis on Energy Efficiency and CO₂ Emissions of China’s New Energy City Bus

Abstract:

Life cycle analysis provides global research methods for the assessment of life cycle performance. In this research, a WTW（well to wheel）model was introduced to study and compare the energy efficiency and CO₂ emissions from diesel bus, CNG bus and electric bus. The results show that the WTW total energy efficiency of diesel bus is 1790MJ/100km. The energy efficiency of CNG bus is 6% lower than that of diesel bus, while the energy efficiency of electric bus is 36% higher than that of diesel bus. Both CNG bus and electric bus show good potential of oil replacement with oil consumption decrease of 98% and 90%. As more than 80% of China’s electricity is produced by coal, electric bus has equal effect as CNG bus on CO₂ reduction. Compared to diesel bus, CO₂ emissions from new energy bus are reduced by 14%.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 2598-2602
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.2598
• Online since: May 2012
• Authors: Dong Bo Yang, Li Liu, Ceng Zeng, Li Bo Han
• Keywords: Energy Efficiency, Life Cycle Analysis, New Energy City Bus

References

[1] State Statistics Bureau of the People's Republic of China. China's energy statistical year book 2006[G/OL], Beijing.China statistical publishing house, 2006.

[2] Wang xieqing. The coordinated development of auto industry and oil industry. auto.sina.com.cn/news/2004-11-22/153687490.shtml.

[3] He Kebin. Problems of China's highway traffic energy：[conference report] .Beijing：2004.

[4] Yao mingde. The alternative energy choices for road transportation. Document assembly of the promotion the application nature gas in vehicle and vessel transportation seminar,(2011)

[5] Michael Wang. Fuel choices for fuel-cell vehicles: well-to-wheels energy and emission impacts. Journal of Power Sources 112, 2002：307～321.

DOI: 10.1016/s0378-7753(02)00447-0

[6] Zhang ke. Database and life cycle analyses of typical vehicle alternative fuel in China. [master thesis]：Beijing，Tsinghua University，2008.

[7] Yang shuai，Zhang zhendong，Ying qiga .Feasibility analysis of GTL as a diesel engine clean alternative fuel .Automotive Engineering Technology.2007,1.

[8] Wei zhenlin，Shen jinsheng，Huang ailing.Comparative study of the life cycle assessment of vehicle alternative fuels. Transportation systems engineering and information.2006,2.

[9] Hu zhiyuan，Tan peiqiang，Lou.diming. Life cycle emission evaluation for diesel and alternative fuels. Civil engineering technology.2007，3：80~84.