NDLI: Investigation Concerning the Aerothermodynamic Performance Perturbation of a 19MW Intercooled Air Compressor

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Inam, U. Haq Ali, H. Al-Jameel Khalid, N. Al-Khalidi
Copyright Year	2000
Abstract	This paper investigates the performance problem of a large capacity multistage centrifugal air compressor when operated continuously for an extended period of time without overhauling. The compressor flow constitutes fifty percent of the plant production and plays a critical role in meeting the annual contract capacity and can not tolerate performance instability due to high intercooler temperatures, ambient conditions and, fouling of the internal components. During a recent harsh summer operation, the compressor was undergone to surge many times and prompted to initiate a performance evaluation study to identify the cause(s) of surge and the extent of performance deterioration. High cooling water supply temperature and ambient conditions crippled the performance of the compressor. Engineering analysis identified the excessive accumulation of condensed water in the water chamber of the second intercooler as the most logical reason of the compressor surge during the instances of high ambient conditions i.e. relative humidity and temperature greater than 80% and 35°C, respectively. During heavy load of condensed water, the blockage and insufficient size of the condensate drain caused build up of water level in the water collecting chamber which offered instantaneous hindrance to airflow to the next section and, hence, led to the compressor surge. During normal ambient conditions, the overall performance of the compressor was found satisfactory when compared with the commissioning after a long term of continuous operation without maintenance.
Sponsorship	International Gas Turbine Institute
File Format	PDF
ISBN	9780791878552
DOI	10.1115/2000-GT-0343
Volume Number	Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
Conference Proceedings	ASME Turbo Expo 2000: Power for Land, Sea, and Air
Language	English
Publisher Date	2000-05-08
Publisher Place	Munich, Germany
Access Restriction	Subscribed
Subject Keyword	Water Performance evaluation Temperature Cooling Water supply Compressors Maintenance Air compressors Surges Flow (dynamics) Stress Air flow Condensed matter
Content Type	Text
Resource Type	Article

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