Fuel CeU
Turboexpander
a
Heat Exchanger
Figurę 2.1 Symbols used in schematics 2.2 Natural Gas Transportation
This section describes the natural gas transportation process and the components of a conventional pressure reduction station.
2.2.1 Distribution pressures
Natural gas is usually collected in remote areas. In order for the gas to be utilized by industry and other consumers it must be transported large distances to where it is consumed. The distance natural gas can be practically transported in a pipeline is dependent on the gas pressure. Long distances reąuire high gas pipeline pressures. Pipeline network pressure losses are caused primarily by friction losses and heat transfer to the environment. Compressor stations along the network compensate for pressure losses by boosting the pipeline pressure to morę acceptable
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