Mechanical drive gas turbine selection for service in two natural gas pipelines in Nigeria

The performance characteristics of land-based gas turbines are known to be greatly affected by ambient and operating conditions including inevitable machine deterioration. This study makes a selection of gas turbines for use as compressor station drivers on two natural gas pipelines in Nigeria takin...

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Main Authors: Ogbonnaya Agwu, Chigozie Eleghasim
Format: Article
Language:English
Published: Elsevier 2017-09-01
Series:Case Studies in Thermal Engineering
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214157X16301745
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spelling doaj-ce0e011c605e4241bfe54b6e306d36912020-11-24T21:10:29ZengElsevierCase Studies in Thermal Engineering2214-157X2017-09-0110C192710.1016/j.csite.2017.02.003Mechanical drive gas turbine selection for service in two natural gas pipelines in NigeriaOgbonnaya AgwuChigozie EleghasimThe performance characteristics of land-based gas turbines are known to be greatly affected by ambient and operating conditions including inevitable machine deterioration. This study makes a selection of gas turbines for use as compressor station drivers on two natural gas pipelines in Nigeria taking into account the local site conditions of ambient temperature and altitude as well as some level of turbine deterioration. The analysis involved modelling and simulating the on-site performance of five gas turbine engines within the power requirement range of the compressor stations as dictated by pipeline gas flow studies. The overall effect of all considered factors was an engine thermal efficiency loss of 5.3% and a 26.3% decrement in power output. Selected turbines for driving the compressor stations must therefore have a minimum of 26.3% more power output than the value established by pipeline flow analyses. More generally, the results suggest that gas pipelines of 24-in. diameter with a throughput of 450 MMSCFD require a compression power of about 0.04 MW/km if flow pressure is to be maintained at a minimum of 50 bar. Also, a gas turbine driver should be capable of 0.05 MW/km of pipeline given the local site conditions and engine deterioration.http://www.sciencedirect.com/science/article/pii/S2214157X16301745Compression powerDeteriorationDriverGas pipelineGas turbineSelection
collection DOAJ
language English
format Article
sources DOAJ
author Ogbonnaya Agwu
Chigozie Eleghasim
spellingShingle Ogbonnaya Agwu
Chigozie Eleghasim
Mechanical drive gas turbine selection for service in two natural gas pipelines in Nigeria
Case Studies in Thermal Engineering
Compression power
Deterioration
Driver
Gas pipeline
Gas turbine
Selection
author_facet Ogbonnaya Agwu
Chigozie Eleghasim
author_sort Ogbonnaya Agwu
title Mechanical drive gas turbine selection for service in two natural gas pipelines in Nigeria
title_short Mechanical drive gas turbine selection for service in two natural gas pipelines in Nigeria
title_full Mechanical drive gas turbine selection for service in two natural gas pipelines in Nigeria
title_fullStr Mechanical drive gas turbine selection for service in two natural gas pipelines in Nigeria
title_full_unstemmed Mechanical drive gas turbine selection for service in two natural gas pipelines in Nigeria
title_sort mechanical drive gas turbine selection for service in two natural gas pipelines in nigeria
publisher Elsevier
series Case Studies in Thermal Engineering
issn 2214-157X
publishDate 2017-09-01
description The performance characteristics of land-based gas turbines are known to be greatly affected by ambient and operating conditions including inevitable machine deterioration. This study makes a selection of gas turbines for use as compressor station drivers on two natural gas pipelines in Nigeria taking into account the local site conditions of ambient temperature and altitude as well as some level of turbine deterioration. The analysis involved modelling and simulating the on-site performance of five gas turbine engines within the power requirement range of the compressor stations as dictated by pipeline gas flow studies. The overall effect of all considered factors was an engine thermal efficiency loss of 5.3% and a 26.3% decrement in power output. Selected turbines for driving the compressor stations must therefore have a minimum of 26.3% more power output than the value established by pipeline flow analyses. More generally, the results suggest that gas pipelines of 24-in. diameter with a throughput of 450 MMSCFD require a compression power of about 0.04 MW/km if flow pressure is to be maintained at a minimum of 50 bar. Also, a gas turbine driver should be capable of 0.05 MW/km of pipeline given the local site conditions and engine deterioration.
topic Compression power
Deterioration
Driver
Gas pipeline
Gas turbine
Selection
url http://www.sciencedirect.com/science/article/pii/S2214157X16301745
work_keys_str_mv AT ogbonnayaagwu mechanicaldrivegasturbineselectionforserviceintwonaturalgaspipelinesinnigeria
AT chigozieeleghasim mechanicaldrivegasturbineselectionforserviceintwonaturalgaspipelinesinnigeria
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