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Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines

The performance of industrial gas turbines is closely tied to the intake air temperature and component performance degradation caused by fouling, erosion, and foreign object damage (FOD). Generally, under hot and humid conditions an increase in the ambient intake air temperature induces a decline in...

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Main Authors: Hashmi, M.B., Majid, M.A.A., Lemma, T.A.
Format: Article
Published: Elsevier B.V. 2020
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086049908&doi=10.1016%2fj.aej.2020.04.050&partnerID=40&md5=8841d33eecc2849e6b7f1456712606a6
http://eprints.utp.edu.my/23053/
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spelling my.utp.eprints.230532021-08-19T05:13:07Z Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines Hashmi, M.B. Majid, M.A.A. Lemma, T.A. The performance of industrial gas turbines is closely tied to the intake air temperature and component performance degradation caused by fouling, erosion, and foreign object damage (FOD). Generally, under hot and humid conditions an increase in the ambient intake air temperature induces a decline in gas turbines performance. With this regard, inlet air cooling (IAC) is an established technique that has been applied to reverse the deteriorating effects of high air temperatures. In this study, a steady-state off-design model for a single-shaft industrial gas turbine (Taurus 70) with a variable geometry has been developed to analyze a cumulative effect of fouling and variable ambient conditions on gas turbines performance. The validation of GasTurb 12, simulations was achieved by comparing the results with the Solar Turbines product catalog. The study has been segregated into four different scenarios: (i) with inlet air cooling, (ii) without inlet air cooling, (iii) with Variable Inlet Guide Vane (VIGV) schedule, and (iv) without VIGV schedule. With an increase in fouling severity level, thermal efficiency and specific fuel consumption (SFC) showed clear deterioration. However, with the integration of the IAC technique, the thermal efficiency and SFC improved that translate into economic gain. A novel idea has also been explored to investigate the effect of VIGV scheduling on performance improvement. It is observed that the deployment of the VIGV schedule improves the thermal efficiency and SFC that were previously deteriorating due to fouling. Hence, it is concluded that the integration of inlet air cooling with variable geometry engine can improve the performance of industrial gas turbines especially in hot climate regions such as the Middle East and Southeast Asian countries. © 2020 Faculty of Engineering, Alexandria University Elsevier B.V. 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086049908&doi=10.1016%2fj.aej.2020.04.050&partnerID=40&md5=8841d33eecc2849e6b7f1456712606a6 Hashmi, M.B. and Majid, M.A.A. and Lemma, T.A. (2020) Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines. Alexandria Engineering Journal, 59 (3). pp. 1811-1821. http://eprints.utp.edu.my/23053/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The performance of industrial gas turbines is closely tied to the intake air temperature and component performance degradation caused by fouling, erosion, and foreign object damage (FOD). Generally, under hot and humid conditions an increase in the ambient intake air temperature induces a decline in gas turbines performance. With this regard, inlet air cooling (IAC) is an established technique that has been applied to reverse the deteriorating effects of high air temperatures. In this study, a steady-state off-design model for a single-shaft industrial gas turbine (Taurus 70) with a variable geometry has been developed to analyze a cumulative effect of fouling and variable ambient conditions on gas turbines performance. The validation of GasTurb 12, simulations was achieved by comparing the results with the Solar Turbines product catalog. The study has been segregated into four different scenarios: (i) with inlet air cooling, (ii) without inlet air cooling, (iii) with Variable Inlet Guide Vane (VIGV) schedule, and (iv) without VIGV schedule. With an increase in fouling severity level, thermal efficiency and specific fuel consumption (SFC) showed clear deterioration. However, with the integration of the IAC technique, the thermal efficiency and SFC improved that translate into economic gain. A novel idea has also been explored to investigate the effect of VIGV scheduling on performance improvement. It is observed that the deployment of the VIGV schedule improves the thermal efficiency and SFC that were previously deteriorating due to fouling. Hence, it is concluded that the integration of inlet air cooling with variable geometry engine can improve the performance of industrial gas turbines especially in hot climate regions such as the Middle East and Southeast Asian countries. © 2020 Faculty of Engineering, Alexandria University
format Article
author Hashmi, M.B.
Majid, M.A.A.
Lemma, T.A.
spellingShingle Hashmi, M.B.
Majid, M.A.A.
Lemma, T.A.
Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines
author_facet Hashmi, M.B.
Majid, M.A.A.
Lemma, T.A.
author_sort Hashmi, M.B.
title Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines
title_short Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines
title_full Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines
title_fullStr Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines
title_full_unstemmed Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines
title_sort combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines
publisher Elsevier B.V.
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086049908&doi=10.1016%2fj.aej.2020.04.050&partnerID=40&md5=8841d33eecc2849e6b7f1456712606a6
http://eprints.utp.edu.my/23053/
_version_ 1738656417717420032
score 13.211869

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