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Title: Effect Of Gas Cooling On Igat Performance
Author: Abbas Firoozabadi
Source: American Gas Association 1977
Year Published: 1977
Abstract: In recent years the trend has been to introduce high pressure and large diameter pipelines into transmission systems. Within these systems the temperature of the gas in the pipeline might become substantially higher than the temperature of the ground where the pipeline is buried. If the thermal conductivity of the ground is not high, the temperature of the gas builds up as it moves between successive stations. This causes the capacity of the line to decrease and its horsepower requirements to increase. The high temperature of the gas could also cause some damage to the pipeline coating. Installation of gas coolers at the downstream side of the compressor stations will lower the temperature of the gas in the lines, consequently increasing the capacity of the line and decreasing horsepower requirements, In the design of the IGAT system. (Figure I), the gas cooling concept was taken into account, and gas coolers were installed at the Bid Boland. Tange Hrzal and Compressor Stations one through five. The gas cooler at Bid Boland has been running since its installation. but the remaining six have not yet been put into operation. This study was undertaken to find the effect of the gas cooling on the performance of the existing system and therefore evaluate ihe capacity of the line with and without gas cooling.

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