HEAT RECLAIM SYSTEM

1 . A refrigeration system, comprising:

one or more compressors;

a gas cooler fluidly coupled, through a discharge line, to the one or more compressors;

a flash tank fluidly coupled, through a gas cooler line, to the gas cooler;

one or more evaporators fluidly coupled to the flash tank and the one or more compressors;

a heat reclaim system configured to receive a working fluid from the one or more compressors and the gas cooler, the heat reclaim system fluidly coupled, through a first supply line, to the one or more compressors, and fluidly coupled, through a second supply line, to the gas cooler;

a plurality of valves configured to regulate a flow of the working fluid from the one or more compressors and the gas cooler to the heat reclaim system; and

a control system configured to perform operations comprising:

receiving at least one feedback signal from the heat reclaim system; and

in response to the at least one feedback signal, operating the plurality of valves to regulate an amount of the working fluid circulated into the heat reclaim system from the one or more compressors and the gas cooler.

2 . The refrigeration system of claim 1 , wherein the plurality of valves comprise (i) a first valve attached to the first supply line fluidly connecting the discharge line to the heat reclaim system, (ii) a second valve attached to a first return line fluidly connecting the heat reclaim system to the discharge line, (iii) a third valve attached to the second supply line, and (iv) a fourth valve attached to a second return line fluidly connecting the heat reclaim system to the gas cooler line.

3 . The refrigeration system of claim 2 , wherein the control system is configured to switch the plurality of valves between a standard mode, in which the first, second, third, and fourth valves are closed, a low heat load mode, in which the first and second valves are closed and the third and fourth valves are open, and a high heat load mode, in which the first and second valves are open and the third and fourth valves are closed.

4 . The refrigeration system of claim 2 , wherein the heat reclaim system comprises an air handling unit, the low heat load mode comprising a sub-cooling mode in which the working fluid heats air at a first temperature in the air handling unit, and the high heat load mode comprising a de-superheating heating mode in which the working fluid heats in the air at a second temperature in the air handling unit, the second temperature lower than the first temperature.

5 . The refrigeration system of claim 1 , wherein the heat reclaim system comprises a heat reclaim unit and a heat reclaim controller that transmits, as a function of a parameter of the heat reclaim unit, the at least one feedback signal to the control system.

6 . The refrigeration system of claim 1 , wherein the feedback signal is associated with a heat load required by the heat reclaim system.

7 . The refrigeration system of claim 1 , wherein the control system is configured to:

receive sensor feedback from a temperature sensor coupled to the gas cooler line; and

in response to the sensor feedback, operating the plurality of valves to maintain a temperature of the working fluid entering the flash tank above a temperature threshold.

8 . The refrigeration system of claim 2 , wherein the refrigeration system comprises a fifth valve comprising a 3-way mixing valve connected to and joining the discharge line to the first return line, the fifth valve configured to regulate a flow of working fluid from the one or more compressors and the heat reclaim system into the gas cooler.

9 . The refrigeration system of claim 8 , wherein the control system is configured to set the fifth valve in one of (i) the standard mode, in which a first inlet of the fifth valve connected to the first return line is closed and a second inlet of the fifth valve connected to the discharge line is open, (ii) the low heat load mode, in which the fifth valve is in the same position as in the standard mode, or (iii) the high heat load mode, in which the fifth valve maintains a predetermined pressure differential across the fifth valve.

10 . The refrigeration system of claim 2 , wherein the refrigeration system comprises a sixth valve comprising a 3-way mixing valve connected to and joining the gas cooler line to the second return line, the sixth valve configured to regulate a flow of working fluid from the heat reclaim system and the gas cooler to the flash tank.

11 . The refrigeration system of claim 10 , wherein the control system is configured to set the sixth valve in one of (i) the standard mode, in which the sixth valve is open, (ii) the low heat load mode, in which the sixth valve maintains a predetermined pressure differential across the sixth valve, (iii) and the high heat load mode, in which the sixth valve is open.

12 - 13 . (canceled)

14 . The refrigeration system of claim 1 , wherein the working fluid comprises carbon dioxide refrigerant.

15 . The refrigeration system of claim 1 , wherein the heat reclaim system comprises a water heater and the parameter comprises a temperature of supply water within the water heater.

16 . The refrigeration system of claim 1 , wherein the refrigeration system comprises a second heat reclaim system fluidly coupled, through a set of supply and return lines, to the discharge line of the one or more compressors, the heat reclaim system comprising an air handler and the second heat reclaim system comprising a water heater.

17 . The refrigeration system of claim 16 , wherein the control system is configured to control, as a function of the at least one feedback signal, the plurality of valves, regulating an amount of the working fluid flowed into the water heater from the one or more compressors.

18 . A system, comprising:

a controller; and

a computer storage medium communicatively coupled to the controller, the computer storage medium comprising instructions that, when executed by the controller, cause the controller to perform operations comprising:

receiving, from a heat reclaim system of a refrigeration system, at least one feedback signal, the refrigeration system comprising one or more compressors, a gas cooler, and the heat reclaim system fluidly coupled to and configured to receive working fluid from the one or more compressors and the gas cooler; and

changing, as a function of the at least one feedback signal, an operation parameter of one or more valves of the refrigeration system, regulating an amount of the working fluid flowed into the heat reclaim system from the one or more compressors and the gas cooler.

19 . The system of claim 18 , wherein the refrigeration comprises a flash tank, the flash tank fluidly coupled to the gas cooler through a gas cooler line, the one or more valves comprise (i) a first valve attached to a first supply line fluidly connecting a discharge line to the heat reclaim system, (ii) a second valve attached to a first return line fluidly connecting the heat reclaim system to the discharge line, (iii) a third valve attached to a second supply line, and (iv) a fourth valve attached to a second return line fluidly connecting the heat reclaim system to the gas cooler line, and the changing comprises switching the one or more valves between a standard mode, in which the first, second, third, and fourth valves are closed, a low heat load mode, in which the first and second valves are closed and the third and fourth valves are open, and a high heat load mode, in which the first and second valves are open and the third and fourth valves are closed.

20 . The system of claim 18 , wherein the heat reclaim system comprises an air handling unit, the refrigeration system comprising a water heater fluidly coupled to the one or more compressors, and the changing comprises selectively closing at least one of the one or more valves to at least one of (i) supply working fluid into the water heater from the one or more compressors, (ii) supply working fluid into the air handling unit from the one or more compressors while preventing working fluid from flowing into the air handling unit from the gas cooler, or (iii) supply working fluid into the air handling unit from the gas cooler while preventing working fluid from flowing into the air handling unit from one or more compressors.

21 . A method, comprising:

receiving, from a heat reclaim system of a refrigeration system and by a controller, at least one feedback signal, the refrigeration system comprising one or more compressors, a gas cooler, and the heat reclaim system fluidly coupled to and configured to receive working fluid from the one or more compressors and the gas cooler; and

transmitting, by the controller and as a function of at least one feedback signal, an operating command to one or more valves of the refrigeration system to change an operation parameter of one or more valves of the refrigeration system, regulating an amount of the working fluid flowed into the heat reclaim system from the one or more compressors and from the gas cooler.

22 . The method of claim 21 , wherein the refrigeration system comprises a flash tank fluidly coupled to the gas cooler through a gas cooler line, the gas cooler fluidly coupled to the one or more compressors through a discharge line, the one or more valves comprise (i) a first valve attached to a first supply line fluidly connecting the discharge line to the heat reclaim system, (ii) a second valve attached to a first return line fluidly connecting the heat reclaim system to the discharge line, (iii) a third valve attached to a second supply line fluidly connecting the gas cooler line to the heat reclaim system, and (iv) a fourth valve attached to a second return line fluidly connecting the heat reclaim system to the gas cooler line, and the controller is configured to switch, as a function of the operating command, the one or more valves between a standard mode, in which the first, second, third, and fourth valves are closed, a low heat load mode, in which the first and second valves are closed and the third and fourth valves are open, and a high heat load mode, in which the first and second valves are open and the third and fourth valves are closed.

23 . The method of claim 21 , wherein the heat reclaim system comprises a heat reclaim unit and a heat reclaim controller that determines the at least one feedback signal as a function of a parameter of the heat reclaim unit, and receiving the at least one feedback signal comprises receiving the at least one feedback signal from the heat reclaim controller.

24 . The method of claim 23 , wherein the at least one feedback signal is associated with a heat load required by the heat reclaim system.

25 . The method of claim 21 , comprising:

receiving, by the controller and from a sensor coupled to the gas cooler line, sensor feedback; and

in response to the sensor feedback, transmitting a second operation command to one or more valves to maintain a temperature of the working fluid entering the flash tank above a temperature threshold.

26 . The method of claim 23 , wherein the refrigeration system comprises a fifth valve comprising a 3-way mixing valve connected to and joining the discharge line to the first return line, the fifth valve configured to regulate a flow of working fluid from the one or more compressors and the heat reclaim system to the gas cooler, and the transmitting comprises transmitting, by the processing device and to the controller, the operating command to cause the controller to set the fifth valve in one of (i) the standard mode, in which a first inlet of the fifth valve connected to the first return line is closed and a second inlet of the fifth valve connected to the discharge line is open, (ii) the subcooling mode, in which the fifth valve is in the same position as in the standard mode, or (iii) the space heating mode, in which the fifth valve maintains a predetermined pressure differential across the fifth valve.