Patent ID: 9394826
Filing Date: 2016-07-19
CPC Classification: F02C

Claim Text:
1. An industrial gas turbine engine comprising: a combustor to supply a hot gas stream; a transition duct connected to an outlet of the combustor; a turbine connected to the transition duct; a cooling air passage surrounding the transition duct; the cooling air passage having an inlet and an outlet; a particle separator connected to the outlet of the cooling air passage; a particle outlet of the particle separator connected to the inlet of the cooling air passage; a heat exchanger connected between the outlet of the particle separator and the inlet of the cooling air passage; a closed loop particle cooling circuit formed between the outlet of the cooling air passage and the inlet of the cooling air passage; and, a plurality of fine particles flowing through the cooling air passage within the transition duct that increase a heat transfer rate of the cooling air.