Compressor device and method for controlling such a compressor device

A compressor device, comprising

• a compressor installation (2) with at least one compressor element (3a, 3b, 3c) for compressing a suctioned gas,
• the compressor element (3a, 3b, 3c) being driven by an electric motor (4);
• and
• a heat recuperation system (6) for recuperating heat from a compressed gas resulting from the compression of the suctioned gas,
• the heat recuperation system (6) comprising a piping network (7) with an inlet (8) and an outlet (9) for a coolant, and
• the piping network (7) at the inlet (8) or outlet (9) being provided with control means having a flow rate control state variable for modifying a first flow rate of the coolant in the piping network (7),
• wherein
• the compressor device further comprises measuring means for determining an actual value for a drive current of the electric motor (4) or, respectively, a second flow rate of the suctioned gas;
• and
• the compressor device comprises a control unit (13) configured to
• receive the aforementioned actual value;
• determine, on the basis of the actual value, a desired value for the first flow rate at which a temperature Tw,out of the coolant at the outlet (9) of the piping network (7) is driven to a predefined level;
• and,
• adjust the flow rate control state variable of the control means to the desired value for the first flow rate on the basis of a characteristic that provides a relationship between the flow rate control state variable of the control means and the first flow rate.