CASCADE CYCLE AND METHOD OF REGENERATING WASTE HEAT Russian patent published in 2020 - IPC F01K23/04 F01K23/10 

FIELD: heat exchange.

SUBSTANCE: system comprises first circuit (11) of working fluid medium and second circuit (13) of working fluid medium. Heat, for example, waste heat from upper high-temperature thermodynamic cycle, is transferred to working fluid circulating in first circuit (11) of working fluid, and expands in first expander to produce useful mechanical energy. Between first circuit (11) of working fluid medium and second circuit (13) of working fluid medium heat transfer device is arranged, which is made with possibility to transfer low-temperature heat from first circuit (11) to second circuit (13). In second circuit (13) the working fluid medium is passed, expanded in at least one expander to produce useful mechanical energy used to drive the pump or compressor (17) of the first circuit of the working fluid medium. Heat of the expanded gas is additionally used in second recuperator (239) for preliminary heating of the first working fluid medium.

EFFECT: energy conversion system is described.

18 cl, 5 dwg