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Effect of Compressor Emergency Shutdown in Various Compressor Station Configurations on Natural Gas Transmission Pipeline

  • Hamed AmeriEmail author
  • Mahmood Farzaneh-Gord
Research Paper
  • 5 Downloads

Abstract

The transient conduct of compressor stations, especially subject to sudden change in conditions, and its effect on performance of natural gas transmission pipeline is one of the most important concerns of operators. The main objective of this paper is to investigate how compressors are arranged in compressor stations, when there is not any standby compressor. Both parallel and series mode have been analyzed for the transient state and it has been determined which of them has more advantages. Considering the boundary conditions in critical conditions, the series arrangement compared to parallel, provides a longer period for the needs of consumers.

Keywords

Pipeline Compressor stations Compressible flow Parallel Series 

List of Symbols

\( A \)

Cross-sectional area of the pipeline

\( C_{p} \)

Specific heat at constant pressure (J/kg K)

\( D \)

Pipeline diameter (m)

\( f \)

Friction factor

\( g \)

Gravitational acceleration (m/s2)

\( H \)

Isentropic head (kJ/kg)

\( L \)

Pipeline length (m)

\( \dot{m} \)

Mass flow rate (kg/s)

\( n \)

Time level

\( N \)

Speed (rpm)

\( P \)

Pressure of the gas (Pa)

\( t \)

Time (s)

T

Temperature (°C)

V

Capacity (m3/h)

\( \Delta t \)

Time step (s)

\( \Delta x \)

Time step (s)

\( Z \)

Compressibility factor

Greek Alphabets

\( \varphi \)

Angle of inclination of pipeline (radian)

\( \sigma \)

Isentropic exponent

\( \gamma \)

Specific gravity

\( \eta \)

Efficiency

Subscripts

d

Discharge

s

Suction

st

Standard condition

N

Number of nodes

is

Isentropic

ref

Reference

sc

Standard condition

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Copyright information

© Shiraz University 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringShahrood University of TechnologyShahroodIran
  2. 2.Faculty of Engineering, Department of Mechanical EngineeringFerdowsi University of MashhadMashhadIran

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