Thermal system with rankine circuit
AssigneeFaurecia Systemes D'Echappement
InventorJulien Rapior
Life of this patent
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Abstract
A thermal system includes a Rankine cycle heat recovery device including a Rankine circuit having a first heat exchanger, an expander, a condenser, and a first pump. A cooling device having a cooling circuit that includes a second heat exchanger, a second pump, and a third heat exchanger with a device to be cooled. The thermal system comprises a device for regulating the pressure in the Rankine circuit and includes an enclosure delimiting a space and housing a movable part separating the space into first and second chambers. The first chamber communicates with the Rankine circuit and the second chamber communicates with the cooling circuit.
Claims12
A thermal system for a motor vehicle including:
- a Rankine cycle heat recovery device including a Rankine circuit, in which a Rankine fluid circulates, the Rankine circuit including a first heat exchanger in which the Rankine fluid recovers heat from a heat source, an expander, a condenser, and a first pumps;
- a cooling device including a cooling circuit in which a refrigerant circulates, the cooling circuit including a second heat exchanger in which the refrigerant gives heat to a cold source, a second pump, and a third heat exchanger with a device to be cooled;
- and
- a pressure regulating device that regulates the pressure in the Rankine circuit, the pressure regulating device including an enclosure delimiting a space and housing a movable part separating the space into first and second chambers, the first chamber communicating with the Rankine circuit and the second chamber communicating with the cooling circuit;
- wherein the pressure regulating device is positioned downstream of the expander in the Rankine circuit.
A thermal system for a motor vehicle including:
- a Rankine cycle heat recovery device including a Rankine circuit, in which a Rankine fluid circulates, the Rankine circuit including a first heat exchanger in which the Rankine fluid recovers heat from a heat source, an expander, a condenser, and a first pump;
- a cooling device including a cooling circuit in which a refrigerant circulates, the cooling circuit including a second heat exchanger in which the refrigerant gives heat to a cold source, a second pump, and a third heat exchanger with a device to be cooled;
- a pressure regulating device that regulates the pressure in the Rankine circuit, the pressure regulating device including an enclosure delimiting a space and housing a movable part separating the space into first and second chambers, the first chamber communicating with the Rankine circuit and the second chamber communicating with the cooling circuit;
- wherein the pressure regulating device comprises:
- an inlet for Rankine fluid in gaseous form into the first chamber and an outlet for Rankine fluid in liquid form from the first chamber;
- an inlet pipe for refrigerant in the second chamber and an outlet pipe for refrigerant from the second chamber;
- and
- the condenser, formed by a heat exchange pipe extending in the first chamber and in which the refrigerant circulates.
A thermal system for a motor vehicle having a Rankine cycle heat recovery device including:
- a Rankine circuit, in which a Rankine fluid circulates, the Rankine circuit including a first heat exchanger in which the Rankine fluid recovers heat from a heat source, an expander, a condenser, and a first pump;
- a cooling device including a cooling circuit in which a refrigerant circulates, the cooling circuit including a second heat exchanger in which the refrigerant gives heat to a cold source, a second pump, and a third heat exchanger with a device to be cooled;
- and
- a pressure regulating device that regulates the pressure in the Rankine circuit, the pressure regulating device including an enclosure delimiting a space and housing a movable part separating the space into first and second chambers, the first chamber communicating with the Rankine circuit and the second chamber communicating with the cooling circuit;
- wherein the pressure regulating device is separate from the condenser, the first chamber of the pressure regulating device communicating with the Rankine circuit between the condenser and the first pump;
- wherein the second chamber is connected to the cooling circuit via a valve;
- and
- wherein the valve is a three-way valve arranged in parallel with the second pump, including a first channel connected to the second chamber, a second channel connected upstream from the second pump and a third channel connected downstream from the second pump.
Dependencies are inferred from the claim text.