GAS TURBINE ENGINE EXHAUST GAS HEAT RECOVERY METHOD Russian patent published in 2002 - IPC

FIELD: heat power engineering. SUBSTANCE: according to invention, heat exchange device is installed directly at engine exhaust pipe outlet and is divided into definite number of separate sections, each accommodating such number of heat transfer devices which exclude gas flow locking at this section. Size of cross-section of each section is increased from beginning of section to its end. Owing to removal and transfer of maximum amount of heat from gases to working liquid and expansion of section at preset aerodynamic resistance of each section, velocity of gases at heat exchange device outlet is reduced. EFFECT: reduced overall dimensions of heat exchange device owing to use of high velocity and temperature of exhaust gases with account of limitation of summary aerodynamic resistance of device. 3 cl, 2 dwg