1 results about "Thermal regenerator" patented technology

This invention discloses a helium phase change cycle cryogenic heat engine system based on the magnetocaloric effect. The system includes a vacuum insulated container, a liquid helium tank, a plunger pump, a cold source replacement countercurrent heat exchanger, a magnetocaloric regenerator assembly, a cryogenic helium temporary storage and transfer pipeline, an ambient heat energy countercurrent heat exchanger, an expander, a pressure stabilizing tank, and at least two cryogenic circulation pumps. The system includes a main working flow path, a low-pressure cold source flow path, and a cryogenic compensation flow path, forming a closed-loop helium working fluid phase change cycle. The beneficial effects of this invention are: (1) the cold and heat sources share the magnetic bed heat exchange channel, improving heat exchange efficiency; (2) the recovered cryogenic helium is used as a supplementary cold source, enabling the magnetocaloric material to work efficiently close to the Curie temperature; (3) the magnetic bed retains cryogenic helium to participate in the tail gas condensation, compensating for insufficient tail gas liquefaction rate; (4) the closed-loop stable operation continuously outputs mechanical energy and / or electrical energy. The superconducting magnetic source cooling can be replaced by other cryogenic liquids through heat exchange, thereby reducing the amount of liquid helium used.