Life Cycle Inventory Analysis of Hybrid Electric Bus and Traditional Diesel Fuel Bus

• Main Authors: Lu, Tzu-Hsien, 呂姿賢
• Other Authors: Chen, chiu-yang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/92250714057611082517

碩士 === 國立臺北大學 === 自然資源與環境管理研究所 === 99 === Faced with the traffic congestion, air quality deterioration, and the pressure of rising oil price recently, it is important to develop the electric green transportation industry. Now, the promotion of the Hybrid Electric Bus can significantly reduce the pollution generated by the transportation of vehicles. This study aims at evaluating whether policy promotion about the Hybrid Electric Bus is appropriate by using life cycle inventory analysis to compare the Hybrid Electric Bus and the Traditional Diesel Fuel Bus in the use and disposal stages. The life cycle stages considered include the use and the end-of-life discard of the vehicles. Since neither the entire life cycle nor the impact assessment phase is incorporated, the study can only be referred as a streamlined life cycle assessment. In order to implement a comparable basis, the functional unit is defined as every 432,160 km use of the bus. During the use phase, the energy consumption of the Traditional Diesel Fuel Bus is 171,567.52 L while the Hybrid Electric Bus is 143,477.12 L. The energy consumption by the Hybrid Electric Bus is less 16％ than the Traditional Diesel Fuel Bus. Among the air pollutants compared, TSP, PM10, SOX, NOX, THC, CO and CO2 emitted from the Hybrid Electric Bus are less than those from the Traditional Diesel Fuel Bus. For the disposal phase, the amount of hazardous waste generated from Hybrid Electric Bus is 503.52 kg that is about 2.68 times of that from the Traditional Diesel Fuel Bus. It is mainly due to the large amount of lead-acid battery uses. The results indicate that, on the air pollutants emissions and the energy consumption, the Hybrid Electric Bus is less than those from the Traditional Diesel Fuel Bus. For the disposal phase, the amount of hazardous waste generated from the Hybrid Electric Bus is more than those from the Traditional Diesel Fuel Bus. In the hypothesis of eight years life time, the Hybrid Electric Bus will replace the lead-acid battery about two times in comparing with the Tradition Diesel Fuel Bus. In addition, the Hybrid Electric Bus needs 2.7 times more lithium batteries. It indicates that the battery use is non-economic and environmentally hazardous. Therefore, it is suggested that more efforts in research and development or improvement on the battery are required to accelerate the promotion of the Hybrid Electric Bus and to reduce the pollution load on the environment.