Fuel heating in combined cycle turbomachinery

Combined cycle efficiency can be improved by heating fuel in a gas turbine fuel line (42) in two stages (44,46) using (i) hot water from an HP economizer (32) of a heat recovery steam generator (HRSG) (16) in a second stage and (ii) hot water from an IP economizer (34) of the HRSG (16) and water out...

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Bibliographische Detailangaben
Hauptverfasser:	Beadie, Douglas Frank, Sholes, John Edward, Mundra, Kamlesh
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	Combined cycle efficiency can be improved by heating fuel in a gas turbine fuel line (42) in two stages (44,46) using (i) hot water from an HP economizer (32) of a heat recovery steam generator (HRSG) (16) in a second stage and (ii) hot water from an IP economizer (34) of the HRSG (16) and water output flow from the second stage in a first stage. Efficiency may be further improved by adding one or more fuel preheaters (52) using hot water from the IP feedpump (54) and sequential injections of hot water into the fuel.