A rotor, a power-generation turbomachine comprising said rotor, and a thermodynamic circuit using said turbomachine

A rotor for a power-generating turbomachine, the rotor comprising:

• a plurality of rotor disks;
• wherein each rotor disk comprises a respective annular row of rotor blades of an expansion flow path of the power-generating turbomachine;
• a forward shaft portion;
• an aft shaft portion;
• and
• at least one cooling duct adapted to feed a cooling fluid to the rotor disks;
• wherein:
• a first set of rotor disks is formed integrally with a section of said forward shaft portion;
• the first set of rotor disks and the section of forward shaft portion forming a monolithic component;
• the forward shaft portion and the aft shaft portion are connected to one another by a tie rod arrangement.