A rotor (1), in particular a rotary
heat pump, comprising a rotating shaft (2), a number of compression conduits (15) through which a working medium, in particular a gas, preferably a
rare gas, is directed away from the rotating shaft (2) to increase its pressure due to centrifugal acceleration, a number of expansion conduits (20) through which the working medium is directed towards the rotating shaft (2) to decrease its pressure due to centrifugal acceleration, a number of first
heat transfer conduits (18) for the working medium, and a number of second
heat transfer conduits (22) for a
heat transfer medium, in particular a liquid, flowing through the first heat transfer conduits (18). and a number of second heat transfer conduits (22) for transferring heat between the working medium and the heat transfer medium flowing in the second heat transfer conduits (22), wherein a number of first rotor plates (10) and second rotor plates (11) include the compression conduits (15), the expansion conduits (20), the first heat transfer conduits (18) for the working medium, and the second heat transfer conduits (22) for the heat transfer medium, and the first rotor plates (10) and second rotor plates (11) are connected to each other along their main extension surfaces.