Ambient temperature barocaloric refrigerating machine based on barocaloric effect

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.