Sunday, March 27, 2011

Transportation Sector

http://www.eia.doe.gov/emeu/efficiency/ee_ch5.htm

The introduction:
Energy use in the transportation sector is primarily for passenger travel and freight movements. Passenger travel vehicles consist of light-duty vehicles (automobiles, motorcycles, and light trucks) and high-duty vehicles (buses, airplanes, boats, and trains). The freight modes of transport include truck, air, rail, pipeline, and marine (domestic barge and cargo). Energy is also used for military operations and off-highway vehicles used for construction and farming.

Petroleum supplies the vehicles in the transportation sector in the forms of gasoline, diesel fuel, liquefied
petroleum gas, jet fuel, and residual fuel oil. In 1992, more than 60 percent of petroleum products supplied was gasoline. The transportation sector uses very small amounts of other fuels such as natural gas and electricity.(31)




Some of the page is more about energy in transport but as you get further into the reading it covers more of the different modes of transport. It gives details on some of the ones they have listed. This is just what I noticed from reading the intro and skimming through a few good chunks of the page.

In the late 1970's total energy consumption (indexed to 1980) grew faster than Gross Domestic Purchases (GDP).(32) This pattern reversed in the early 1980's and became even more pronounced as GDP grew at a faster rate than total energy consumption. However, total energy consumption increased as well, as Figure shows. Passenger miles have increased 21 percent between 1977 and 1992. Populations have increased and people are traveling more as the distance between work and home has increased. More shipping is being done over greater distances.(33)
5.1
The price of energy during this time was very volatile. Between 1977 and 1980, the real price of crude oil nearly doubled. It reached a peak in 1982 and then dived below the prices of the late 1970's.

1 comment:

  1. I actually don't think this will be much of a help for our project. After reading through it again I realized that almost all of it is just about energy consumption, even when they are speaking about different modes of transportation.

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