THERMODYNAMIC SYSTEM FOR STORING/PRODUCING ELECTRICAL ENERGY

• US 20160248299A1
• Filed: 10/01/2014
• Published: 08/25/2016
• Est. Priority Date: 10/03/2013
• Status: Active Grant

• Current Assignee: Boreales Energy, Co.
• Original Assignee: Culti'Wh Normands
• Inventors: Ouvry, Patrick
• Granted Patent: US 10,483,826 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F01K 25/08 using special vapours
• CPC Class Codes: F01K 3/12 having two or more accumulators
• CPC Class Codes: F01K 7/38 the engines being of turbine type
• CPC Class Codes: F25B 2313/0271 the compressor allows rotation in reverse direction
• CPC Class Codes: F25B 2400/14 Power generation using energy from the expansion of the refrigerant
• CPC Class Codes: F25B 2400/24 Storage receiver heat
• CPC Class Codes: F25B 27/00 Machines, plants or systems, using particular sources of energy F25B30/06 takes precedence
• CPC Class Codes: H02K 7/1807 Rotary generators H02K7/006 takes precedence

Abstract

A system for producing and storing electrical energy includes a thermally insulated chamber containing a first circuitry in which circulates a first working fluid, a hot source, a cold source, wherein the hot source is composed of a pure water ice slurry at 0° C., the cold source is composed of an ice slurry with a temperature lower than or equal to −40° C. and the system for producing/storing electrical energy further includes a second circuitry of working fluid for circulating a second working fluid between the hot source and a thermostat, wherein the second working fluid is circulated between said thermostat and the hot source by an auxiliary expansion valve and an auxiliary compressor.

Claims

1. A system for producing and storing electrical energy, comprising a thermally insulated chamber containing a first closed circuitry in which circulates a first working fluid, a hot source through which a first leg of the first circuitry passes for a heat exchange between the first working fluid and the hot source, a cold source through which a second leg of the first circuitry passes for a heat exchange between the first working fluid and the cold source, the hot and cold sources being thermally insulated from each other, the first circuitry further comprising third and fourth legs connecting in series the first and second legs, the third leg comprising a first member for circulating the first liquid working fluid and the fourth leg comprising a second member for circulating the first gas working fluid, wherein the hot source is composed of a pure water ice slurry at 0°

C., the cold source is composed of an ice slurry with a temperature lower than or equal to −

40°

C. and the system for producing/storing electrical energy further comprises a second circuitry of working fluid for circulating a second working fluid between the hot source and a constant temperature system outside the thermally insulated chamber, the constant temperature system being selected from the group comprising ambient air, a water reserve, a water stream, a water course, a waterway, wherein the second working fluid is circulated between said constant temperature system and the hot source by an auxiliary expansion valve and an auxiliary compressor, and is caused to exchange heat therewith.

2. The system according to claim 1, wherein the first fluid circulating member is a reversible pump, and the second circulating member is a reversible turbine.

3. The system according to claim 1, wherein a low temperature regenerator is arranged to enable a heat exchange between the legs entering and exiting the cold source.

4. The system according to claim 1, wherein a high temperature regenerator is arranged between the legs entering and exiting the second circulating member.

5. The system according to claim 1, wherein a superheating member providing an external heat is provided on the first fluid circuitry immediately upstream of the input of the second circulating member in the electricity production mode of the second circulating member.

6. The system according to claim 1, wherein a compressor assembly is provided on a fifth circuitry leg in parallel to the fourth leg.

7. The system according to claim 1, wherein an expansion valve assembly is provided on a sixth circuitry leg in parallel to the third leg.

8. The system according to claim 7, wherein a compressor assembly is provided on a fifth circuitry leg in parallel to the fourth leg and the fifth and sixth legs are directly connected to the first circuitry.

9. The system according to claim 7, wherein a compressor assembly is provided on a fifth circuitry leg in parallel to the fourth leg and the fifth and sixth legs form with a seventh leg passing through the hot source and an eighth leg passing through the cold source a third closed circuitry independent from the first circuitry and parallel thereto, in which circulates a third working fluid.

10. The system according to claim 1, wherein the system further comprises a source at an intermediate temperature between the temperature of the hot source and the temperature of the cold source, a fourth fluid circuitry carrying a fourth working fluid comprising a leg passing through each of the sources to exchange heat with them, the intermediate temperature source being connected to the fourth circuitry in parallel to the hot source, by a leg equipped with a compressor and a leg equipped with an expansion valve, and in parallel to the cold source, by a leg equipped with a compressor and a leg equipped with an expansion valve.

11. The system according to claim 10, wherein the intermediate temperature source is made of an ice slurry at a temperature between −

15°

C. and −

30°

C., preferably −

21°

C.

12. The system according to claim 10, wherein the same working fluid circulates in the first circuitry and the fourth circuitry which form a single closed circuit.

13. The system according to claim 10, wherein the first circuitry and the fourth circuitry are independent.

14. The system according to claim 1, wherein the cold source is made of an eutectic mixture of water and calcium chloride.

15. The system according to claim 1, wherein the first circuitry and the second circuitry are connected in a single closed circuitry, the first and second working fluids constituting a single working fluid for the assembly comprising the first and second circuitries.

16. The system according to claim 6, wherein at least one compressor of the compressor assembly is equipped with a rotor provided with blades and is driven directly by the mechanical energy of the wind.

17. The system according to claim 6, wherein at least one compressor of the compressor assembly is equipped with a rotor driven by a one of a pneumatic circuit and a hydraulic circuit actuated by a water-pumping windmill, the rotor being then indirectly driven by the mechanical energy of the wind.

18. A system for producing and storing electrical energy, said system comprising:

a thermally insulated chamber including a first closed circuitry in which circulates a first working fluid;

a hot source through which a first leg of the first circuitry passes for a heat exchange between the first working fluid and the hot source;

a cold source through which a second leg of the first circuitry passes for a heat exchange between the first working fluid and the cold source;

the hot and cold sources being thermally insulated from each other;

the first circuitry further comprising third and fourth legs connecting in series the first and second legs, the third leg comprising a first member for circulating the first liquid working fluid and the fourth leg comprising a second member for circulating the first gas working fluid, wherein;

the hot source comprises a pure water ice slurry at 0°

C.; and

the cold source comprises an ice slurry with a temperature lower than or equal to −

40°

C.;

said system for producing/storing electrical energy further comprising a second circuitry of working fluid for circulating a second working fluid between the hot source and a constant temperature system outside the thermally insulated chamber, the constant temperature system being selected from the group comprising ambient air, a water reserve, a water stream, a water course, a waterway;

wherein the second working fluid is circulated between said constant temperature system and the hot source by an auxiliary expansion valve and an auxiliary compressor, and is caused to exchange heat therewith.