EFFICIENT TRANSPORTATION SYSTEM
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
computer science crazy
Super Moderator
******

Posts: 3,048
Joined: Dec 2008
#1
11-02-2009, 04:54 PM


There is a distinction between vehicle MPGe and passenger MPGe. Most of these entries cite passenger MPGe even if not explicitly stated. It is important not to compare energy figures that relate to unsimilar journeys. An airline jet cannot be used for an urban commute so when comparing aircraft with cars the car figures must take this into account.
There is currently no agreed upon method of comparing electric vehicle efficiency to heat engine (fossil fuel) vehicle efficiency. However, current typical emissions and thermal energy consumption can be compared. Vehicle speed is also an important parameter, and a peer-reviewed evaluation which convolves these criteria may be found at bentham-openpages/content.php?TOEFJ/2008/00000001/00000001/11TOEFJ.PDF
If the issue is rapid investment in new electric mass transit it is important to use emissions associated with the most polluting fuel because increased demand for electricity increases the use of the most polluting fuel used in generation for the immediate future.
Systems that re-use vehicles like trains and buses can't be directly compared to vehicles that get parked at their destination. They use energy to return (less full) for more passengers and must sometimes run on schedules and routes with little patronage. These factors greatly affect overall system efficiencies. The energy costs of accumulating load need to be included. In the case of most mass transit distributing and accumulating load over many stops means that passenger kilometres are inherently a small proportion of vehicle kilometres see Transport Energy Metrics, Lessons from the west Coast Main line Modernisation and figures for London Underground in transport statistics for Great Britain 2003. Lessons from the west coast mainline modernisation suggest that long passenger rail should operate at less than 40% capacity utilisation and for London underground the figure is probably less than 15%.
Most cars run at less than full capacity, with the usual average load being between 1 and 2. Cars are also subject to inefficiencies because of congestion and the need to negotiate road junctions. The impact of transport road building to reduce congestion should always be considered as should the improving efficiency of cars see hm-treasury.gov.uk/media/9/5/pbr_csr07_king840.pdf,
Vehicles are not isolated systems. They usually form a part of larger systems whos design inherently determines energy consumption. Judging the value of transport systems by comparing the performance of their vehicles alone can be misleading. For instance, metro systems may have a poor energy efficiency per passenger kilometer, but their high throughput and low physical footprint makes the existence of high urban population densities viable. Total energy consumption per capita declines sharply as population density increases, since journeys become shorter.[1]
See also Logistics and Transport Focus (the Journal of the Charter Institute of Transport)vol 9 number10 through volume 10 number 6 for a series of articles debating the general issues of fuel efficiency in transportation in the context of impact on climate change


Download the full seminar and presentation report
Download

if the above link is not working then use this

Download
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  intelligent transportation systems full report project report tiger 13 24,075 20-01-2015, 01:31 PM
Last Post: WalterqFole
  Construction of energy efficient buildings by amalgamating day-light study tips 0 699 27-02-2013, 02:56 PM
Last Post: study tips
  NYC DEPARTMENT OF TRANSPORTATION DIVISION OF BRIDGES seminar tips 0 364 16-11-2012, 05:49 PM
Last Post: seminar tips
  GEOTEXTILES IN TRANSPORTATION APPLICATIONS full report project report tiger 7 8,796 10-08-2012, 11:50 AM
Last Post: ynaresh111
  INFRASTRUCTURE & TRANSPORTATION seminar flower 0 882 09-07-2012, 10:14 AM
Last Post: seminar flower
  A Framework for the study of Carrier Strategies in an Auction Based Transportation Ma seminar ideas 0 557 14-05-2012, 05:10 PM
Last Post: seminar ideas
  THE IMPACT OF TRANSPORTATION CONTROL MEASURES ON EMISSION CONTROL DURING THE OLYMPIC Wifi 0 1,412 31-10-2010, 09:44 PM
Last Post: Wifi