TRANSPORTATION ENERGY DATA BOOK: EDITION 20 - Center for ...

A-16
Pipeline
Rail
Natural Gas:
Tons shipped - DOE, EIA, Natural Gas Annual 1998, Washington, DC, 1999, Table 1. Total
natural gas disposition divided by 44,870 ft3/ton.
Energy use - The amount of natural gas used to transport natural gas was defined as “pipeline
fuel” as reported in DOE, EIA, Natural Gas Annual 1998, Table 1. Cubic feet were
converted to Btu using 1,03 1 Btu/ft3. Electricity use was estimated using the following
procedure as reported on p. 5-110 of J. N. Hooker et al., End Use Energy Consumption
DataBase: Transportation Sector. The energy consumption of a natural gas pipeline was
taken to be the energy content of the fuel used to drive the pumps. Some 94% of the
installed pumping horsepower was supplied by natural gas. The remaining 6% of the
horse power was generated more efficiently, mostly by electric motors. The energy
consumed by natural gas pipeline pumps that were electrically powered was not known.
In order to estimate the electricity consumed, the Btu of natural gas pipeline fuel
consumed was multiplied by a factor of 0.015. From this computed value, electricity
efficiency and generation loss must be taken into account. The electricity energy use in
Btu must be converted to IWhr, using the conversion factor 29.305 x 10e5 lWhr/Btu.
Electricity generation and distribution efficiency was 29%. When generation and
distribution efficiency are taken into account, 1 1Whr equals 11,765 Btu.
Crude Oil and Petroleum Product:
Ton Miles and Tons Shipped - Eno Transportation Foundation, Transportation in America
1999, Seventeenth Edition, Lansdowne, VA, 2000, pp. 44,46.
Energy Use - W. F. Banks, Systems, Science, and Software, Inc., Energy Consumption
in the Pipeline Industry, LaJolla, CA, 1977.
Vehicles, Vmt, Tons, Ton Miles, Average Length of Haul and Energy Use - AAR, Railroad
Facts, 1999 Edition, Washington, DC, 1999.
TRANSPORTATIONENERGYDATABOOIC EDITION~O-2000