Efficiency calculations of air-cooled gas turbines with intercooling

dc.contributor.authorCanière, H.
dc.contributor.authorWillockx, A.
dc.contributor.authorDick, E.
dc.contributor.authorDe Paepe, M.
dc.date.accessioned2014-07-18T09:02:11Z
dc.date.available2014-07-18T09:02:11Z
dc.date.issued2007
dc.description.abstractPaper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.en_US
dc.description.abstractThe working temperature of a gas turbine, necessary to achieve high efficiency, makes cooling of the first turbine stages unavoidable. Air and steam can be used for cooling. A model for an air-cooled gas turbine based on the work of Young and Wilcock [J.B. Young, R.C. Wilcock, ASME J. Turbomachinery 124 (2002) 207–221] is implemented in AspenTM. Simple cycle calculations with realistic parameters of current machines are made and confirm the results of Wilcock et al. [R.C. Wilcock, J.B. Young, J.H. Horlock, ASME J. Eng. Gas Turb. Power 127 (2005) 109–120] that increasing the turbine inlet temperature no longer means an increase in gas turbine cycle efficiency. This conclusion has important consequences for gas turbines because it breaks with the general accepted trend of increasing the TIT. An intercooled gas turbine cycle is intensively investigated, taking the turbine cooling into account. Intercooling not only lowers the work of compression, but also lowers cooling air temperatures. The major influences of the intercooling on the gas turbine cycle are mapped and explained. Optimum intercooling pressure for maximum gas turbine cycle efficiency is much lower than halfway compression. A simulation of the LMS100, the most recent gas turbine on the market from GE Energy, is made to verify the simulation methodology. The claimed intercooled cycle efficiency of 46% is confirmed. Further increasing the pressure ratio and TIT can still improve the performance of the intercooled gas turbine cycle.en_US
dc.description.librariancs2014en_US
dc.format.extent6 pagesen_US
dc.format.mediumPDFen_US
dc.identifier.citationCanière, H, Willockx, A, Dick, E & De Paepe, M 2007, 'Efficiency calculations of air-cooled gas turbines with intercooling', Paper presented to the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July 2007.en_US
dc.identifier.isbn9781868546435
dc.identifier.urihttp://hdl.handle.net/2263/40889
dc.language.isoenen_US
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_US
dc.relation.ispartofHEFAT 2007
dc.rightsUniversity of Pretoriaen_US
dc.rights.uriUniversity of Pretoriaen_US
dc.subjectTemperature of a gas turbineen_US
dc.subjectTurbine cycle efficiencyen_US
dc.subjectIntercooling on the gas turbine cycleen_US
dc.subjectPerformance of the intercooled gas turbine cycleen_US
dc.subjectAir-cooled gas turbineen_US
dc.subjectTurbine coolingen_US
dc.titleEfficiency calculations of air-cooled gas turbines with intercoolingen_US
dc.typePresentationen_US

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