METHODS AND SYSTEMS RELATING TO FUEL DELIVERY IN COMBUSTION TURBINE ENGINES

PROBLEM TO BE SOLVED: To provide an improved apparatus, method and/or system for effectively and efficiently controlling temperature of fuel in a system using a fuel compressor at least intermittently. SOLUTION: A fuel delivery system for a combustion turbine engine, includes: a fuel line (50) having the fuel compressor (39) and parallel branches downstream of the fuel compressor (39), wherein a cold branch (55) that includes an after-cooler (51) and a hot branch (60) that bypasses the after-cooler (51) are included; a rapid heating value meter (83) configured to measure the heating value of the fuel from the fuel source and transmit heating value data relating to the measurements; a control device for controlling the amount of fuel being directed through the cold branch (55) and the amount of fuel being directed through the hot branch (60); and a fuel-mixing junction (64) at which the cold branch (55) and the hot branch (60) converge. In the system, the fuel-mixing junction (64) resides in close proximity to a combustion gas control valve (66). COPYRIGHT: (C)2011,JPO&INPIT