Sustainability | |
Some Sustainability Aspects of Energy Conversion in Urban Electric Trains | |
Doru A. Nicola1  Marc A. Rosen2  Cornelia A. Bulucea1  | |
[1] Faculty of Electromechanical and Environmental Engineering, University of Craiova, Romania; E-Mails:;Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario, L1H 7K4, Canada | |
关键词: urban electric transportation; sustainability; electric train; energy conversion; exergy; induction motor; industrial ecology; | |
DOI : 10.3390/su2051389 | |
来源: mdpi | |
【 摘 要 】
The paper illustrates some aspects of energy conversion processes during underground electric train operation. Energy conversion processes are explained using exergy, in order to support transport system sustainability. Loss of exergy reflects a loss of potential of energy to do work. Following the notion that life in Nature demonstrates sustainable energy conversion, we approach the sustainability of urban transportation systems according to the model of an ecosystem. The presentation steps based on an industrial ecosystem metabolism include describing the urban electric railway system as an industrial ecosystem with its limits and components, defining system operation regimes, and assessing the equilibrium points of the system for two reference frames. For an electric train, exergy losses can be related to the energy flows during dynamic processes, and exergy conversion in these processes provides a meaningful measure of the industrial (
【 授权许可】
CC BY
© 2010 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190053796ZK.pdf | 438KB | download |