Abstract: The invention relates to a turbine device comprising a gas turbine portion and concentrically with the gas turbine portion arranged steam turbine portion, where the gas turbine portion and the steam turbine portion have a common rotor (28). The invention also relates to a device for use in a compressor (1) or a turbine (3, 4, 5), where the rotor blades (9) of the rotor (28) as well as the stator blades (19) of the stator (21) comprise fluid channels (23, 26) for collecting heat in the compressor or the turbine. The objective of the invention is to provide a gas turbine engine with high power density and coefficient of efficiency.