A UNIT FOR CONVERSION OF THERMAL ENERGY

Described herein is a unit (1) for conversion of thermal energy including: - a first heat-exchange unit (2) defining a first flow path (F2) for a first thermovector fluid; and - a second heat-exchange unit (4) defining a second flow path (F4) for a second thermovector fluid. The second flow path is obtained by means of a plurality of cartridge elements (32) each including at least one element made of thermoelectric material. The second heat-exchange unit includes a first manifold element (34) and a second manifold element (36), each including a connection interface to said plurality of cartridge elements (32), which is configured for providing a hydraulic connection with inlet orifices (32IN) and outlet orifices (320UT) of the cartridge elements (32), and an electrical connection to first electrodes (32E, 32FC) and second electrodes (32E, 32FC) of said cartridge elements electrically connected to the elements made of thermoelectric material.