Thermal Operating Machine

A thermal machine with reverse cycle and steam compression, and its operating method are described; the machine comprises: a condenser (2) downstream of and in fluid communication, with a main compressor (6) which includes a connection to a thermoelectric generator (13r), based on the Seebeck effect; a main lamination valve (9) downstream of the condenser (2); an evaporator (10) downstream of and in fluid communication with the lamination valve (9); an electric generator (13); an electric charge accumulator (15, 17); an automatic time-changing switch (14) configured, depending on hourly production and consumption slots of an electric market, connected downstream of the electric generator (13) and before the accumulator (15,17); at least one expander (7) connected to at least one alternator (8) in fluid communication between the evaporator (10) and the main compressor (6); and at least one heat exchanger (5) having a hot branch connected downstream to the condenser (2) and before the lamination valve (9) and a cold branch connected downstream to a second lamination valve (4) and upstream to the expander (7);characterized in that the alternator (8) includes a connection to a thermoelectric generator (13r) based on the Seebeck effect.