In a gas turbine, having a number of turbine blades/vanes respectively
combined to form blade/vane rows, each of the turbine blades/vanes
including an integrated cooling air duct, the cooling air requirement is
to be kept particularly low in conjunction with reliable cooling of the
turbine blades/vanes. For this purpose, the turbine blades/vanes forming a
first turbine blade/vane row and the turbine blades/vanes forming a second
blade/vane row connected downstream thereof, viewed in the flow direction
of the working medium, are connected one behind the other on the cooling
air side with the intermediate connection of an injection device for
water. During the operation of the gas turbine, the cooling air flowing
out of the turbine blades/vanes forming the first blade/vane row is
intercooled by the injection of water and is subsequently supplied to the
cooling air ducts of the turbine blades/vanes forming the second
blade/vane row.
