US 12,487,013 B2
Ambient temperature barocaloric refrigerating machine based on barocaloric effect
Bing Li, Liaoning (CN); Ruiqi Song, Liaoning (CN); and Zhidong Zhang, Liaoning (CN)
Assigned to INSTITUTE OF METAL RESEARCH, CHINESE ACADEMY OF SCIENCES, Liaoning (CN)
Appl. No. 18/291,963
Filed by INSTITUTE OF METAL RESEARCH , CHINESE ACADEMY OF SCIENCES, Liaoning (CN)
PCT Filed Jan. 19, 2022, PCT No. PCT/CN2022/072656
§ 371(c)(1), (2) Date Jan. 25, 2024,
PCT Pub. No. WO2023/010816, PCT Pub. Date Feb. 9, 2023.
Claims priority of application No. 202110889207.9 (CN), filed on Aug. 4, 2021.
Prior Publication US 2025/0102200 A1, Mar. 27, 2025
Int. Cl. F25B 23/00 (2006.01); F25B 41/20 (2021.01); F25B 49/00 (2006.01)
CPC F25B 23/00 (2013.01) [F25B 41/20 (2021.01); F25B 49/00 (2013.01); F25B 2300/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An ambient temperature barocaloric refrigerating machine comprising:
an electric injection pump,
a barocaloric element,
a heat exchange fluid,
a cold end heat exchanger, and
a hot end heat exchanger; wherein:
the barocaloric element is a tubular structure having a cylindrical cavity body; a solid refrigerant is arranged in the cylindrical cavity body; an upper part of a side wall of the tubular structure is provided with a hot end liquid outlet pipe and a cold end liquid outlet pipe; a lower part of the side wall is provided with a hot end liquid inlet pipe and a cold end liquid inlet pipe; and a middle part of the side wall is provided with an oil inlet, wherein: the hot end liquid outlet pipe, the cold end liquid outlet pipe, the hot end liquid inlet pipe and the cold end liquid inlet pipe are provided with pressure control valves;
the electric injection pump is adapted to provide a constant pressure for the barocaloric element; an oil filling pipe at the upper end of the injection pump is connected with the oil inlet in the barocaloric element for injecting pressurization oil into the cylindrical cavity body of the barocaloric element; the pressurization oil serves as the heat exchange fluid and in direct contact with the solid refrigerant;
the hot end liquid outlet pipe of the barocaloric element is connected with a liquid inlet of the hot end heat exchanger, and a liquid outlet of the hot end heat exchanger is connected with the hot end liquid inlet pipe of the barocaloric element, thereby forming a first heat exchange circuit;
the cold end liquid outlet pipe of the barocaloric element is connected with a liquid inlet of the cold end heat exchanger, and a liquid outlet of the cold end heat exchanger is connected with the cold end liquid inlet pipe of the barocaloric element, thereby forming a second heat exchange circuit.
 
5. The ambient temperature barocaloric refrigerating machine based on the barocaloric effect according to claim 1, wherein the cold end heat exchanger comprises a cubic cavity body I and heat exchange pipelines I in the cubic cavity body I; the heat exchange pipelines I are arranged in a U-shape; the heat exchange pipelines I are connected with the liquid inlet and the liquid outlet of the cold end heat exchanger respectively; a plurality of plate interlayers are arranged in the cubic cavity body I, and the heat exchange pipelines I are arranged in the plate interlayers; a temperature sensor is installed on the top end of the cubic cavity body I for feeding the temperature in the cubic cavity body I back to a control system in real time.