Efficient integrated cold and hot energy station

Abstract

The utility model relates to the technical field of centralized cold and hot water machine rooms, and discloses an efficient integrated cold and hot energy station which comprises a base, the upper portion of the base is fixedly connected with a cooling tower, a water chilling unit, a tail end, a cold and hot combined supply unit and a cold storage water tank, and the water outlet end of the cooling tower is connected with the water inlet end of the water chilling unit through a first pipeline. The water outlet end of the water chilling unit is connected with the water inlet end of the cooling tower through a second pipeline, a cold water outlet pipe of the water chilling unit is connected with a third pipeline, and the end, away from the water chilling unit, of the third pipeline is connected with the tail end, the cold and heat combined supply unit and the cold storage water tank. According to the utility model, the water chilling unit runs to generate low-temperature cold water and store the low-temperature cold water in the cold storage water tank in the night valley electricity period, and the cold water in the cold storage water tank is supplied to the main pipe network in the daytime peak electricity period, so that the electricity price difference is fully utilized, the electricity utilization cost is effectively reduced, and the aim of saving energy is fulfilled.

Description

Technical Field

[0001] This utility model relates to the field of centralized cold and hot water machine room technology, and in particular to a high-efficiency integrated cold and hot energy station. Background Technology

[0002] Traditional rotary dehumidifier systems primarily rely on low-temperature chilled water circulating from a chilled water plant for cooling. This chilled water system requires numerous water pumps and cooling towers for heat exchange, consuming significant space and increasing system complexity, failure rate, energy consumption, and maintenance costs. The problems are particularly prominent. Furthermore, the dehumidifier system's rotary regenerative heating and air supply heating mainly use electric heaters. Electric heaters have low thermal efficiency and high operating costs, and do not meet the requirements of widely adopted high-efficiency heat source systems.

[0003] With the development and progress of society, the requirements for energy consumption efficiency of cold and heat source systems have gradually increased. The conventional manual distributed control of cold and heat source computer room systems, which are not centrally controlled, greatly increases the failure rate of the entire system and affects its service life. These issues do not meet the current design standards for high efficiency and low energy consumption of cold and heat source computer rooms. Therefore, a high-efficiency integrated cold and heat energy station is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-efficiency integrated cooling and heating energy station, aiming to improve the problem that existing technologies cannot achieve low energy consumption and energy saving.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-efficiency integrated cooling and heating energy station includes a base. A cooling tower, a chiller unit, a terminal unit, a combined cooling and heating unit, and a cold water storage tank are fixedly connected to the upper part of the base. The outlet of the cooling tower and the inlet of the chiller unit are connected by a first pipe. The outlet of the chiller unit and the inlet of the cooling tower are connected by a second pipe. The chilled water outlet of the chiller unit is connected to a third pipe. The end of the third pipe away from the chiller unit is connected to the terminal unit, the combined cooling and heating unit, and the cold water storage tank. The hot water inlet of the chiller unit is connected to a fourth pipe. The end of the fourth pipe away from the chiller unit is connected to the terminal unit, the combined cooling and heating unit, and the cold water storage tank.

[0007] As a further description of the above technical solution:

[0008] Pipeline 2 works in conjunction with Pipeline 1 to operate the cooling tower and chiller unit in a circulating manner.

[0009] As a further description of the above technical solution:

[0010] The combined cooling and heating unit is equipped with an air cooler, a regenerator, a throttle valve, an oil separator, a compressor, and an evaporator. The outlet end of the oil separator is fixedly connected to a pipe six. The other end of the pipe six passes through the air cooler, the regenerator, the evaporator, the regenerator, and the compressor in sequence before being reconnected to the inlet end of the oil separator. A throttle valve is installed in the middle of the pipe six located between the regenerator and the throttle valve.

[0011] As a further description of the above technical solution:

[0012] A cooling water pump is installed on the side of pipe three near the cooling water tank, and a cooling water pump is installed on the side of pipe four near the cooling water tank.

[0013] As a further description of the above technical solution:

[0014] A combined cooling and heating circulating water pump is installed on the side of the pipe near the combined cooling and heating unit, and a chilled water pump is installed on the side of the pipe near the end.

[0015] As a further description of the above technical solution:

[0016] One side of the end is equipped with pipe five, and the other end of pipe five passes through the air cooler and is reconnected to the end.

[0017] As a further description of the above technical solution:

[0018] A cooling water pump is installed on a pipe near one end of the chiller unit.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, by utilizing off-peak electricity hours at night to operate the chiller unit to produce low-temperature chilled water and store it in a chilled water storage tank, and then using the chilled water in the storage tank to supply the main power grid during peak electricity hours during the day, this method of storing chilled water during off-peak hours and using it during peak hours makes full use of the electricity price difference, effectively reduces electricity costs, and achieves the goal of energy saving.

[0021] 2. In this utility model, the combined cooling and heating unit can provide a high-temperature heat source for the dehumidifier while also producing cold water, which is then supplied to the main network for storage via a combined cooling and heating circulating water pump. This achieves the coordinated operation of heat supply and cold water production, enabling more complete and comprehensive utilization of energy, improving the overall energy utilization efficiency, and avoiding energy idleness or waste caused by single-function equipment. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a high-efficiency integrated cooling and heating energy station proposed in this utility model;

[0023] Figure 2This is a schematic diagram of the structure of a cold water storage tank for a high-efficiency integrated cold and heat energy station proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of a regenerator for a high-efficiency integrated cold and heat energy station proposed in this utility model.

[0025] Legend:

[0026] 1. Cooling tower; 2. Cooling water pump; 3. Chiller unit; 4. Chilled water pump; 5. Terminal unit; 6. Combined cooling and heating unit; 7. Chilled water storage tank; 8. Cooled water discharge pump; 9. Chilled water storage pump; 10. Combined cooling and heating circulating water pump; 11. Air cooler; 12. Regenerator; 13. Throttling valve; 14. Oil separator; 15. Compressor; 16. Evaporator; 17. Pipeline 1; 18. Pipeline 2; 19. Pipeline 3; 20. Pipeline 4; 21. Pipeline 5; 22. Pipeline 6. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a high-efficiency integrated cooling and heating energy station, comprising a base. A cooling tower 1, a chiller unit 3, a terminal unit 5, a combined cooling and heating unit 6, and a cold water storage tank 7 are fixedly connected to the upper part of the base. The outlet of the cooling tower 1 and the inlet of the chiller unit 3 are connected via pipe 17. The outlet of the chiller unit 3 and the inlet of the cooling tower 1 are connected via pipe 18. The chilled water outlet of the chiller unit 3 is connected to pipe 19. The end of pipe 19 furthest from the chiller unit 3 is connected to the terminal unit 5, the combined cooling and heating unit 6, and the cold water storage tank 7. The hot water inlet of the chiller unit 3 is connected to pipe 20. The end of pipe 20 furthest from the chiller unit 3 is connected to the terminal unit 5, the combined cooling and heating unit 6, and the cold water storage tank 7. Pipe 28 and pipe 17 work together to circulate the cooling tower 1 and the chiller unit 3. A cooling water pump 2 is installed on pipe 17 near the chiller unit 3. The water outlet of cooling tower 1 is transported to the water inlet of chiller unit 3 via pipe 17 under the action of cooling water pump 2. After the water is cooled by chiller unit 3, the water outlet is sent back to the water inlet of cooling tower 1 via pipe 2 18. In cooling tower 1, the hot water is cooled by heat exchange with the air and then circulated back to chiller unit 3. This cycle is repeated to ensure that chiller unit 3 has a stable supply of low-temperature cooling water and maintain its cooling performance.

[0029] Reference Figure 1 and Figure 3 The combined cooling and heating unit 6 is internally equipped with an air cooler 11, a regenerator 12, a throttling valve 13, an oil separator 14, a compressor 15, and an evaporator 16. The outlet of the oil separator 14 is fixedly connected to a pipe 22. The other end of pipe 22 passes sequentially through the air cooler 11, the regenerator 12, and the evaporator 16, before reconnecting to the inlet of the oil separator 14. A throttling valve 13 is installed in the middle of pipe 22, located between the regenerator 12 and the throttling valve 13. The air cooler 11, the regenerator 12, and the throttling valve 13 are connected via pipe 22 to achieve a specific refrigerant flow path. The oil separator 14 and the compressor 15 are also connected via pipe 22 to ensure the continuity and stability of the refrigerant circulation. The throttling valve 13, located in the middle of the regenerator 12 and the throttling valve 13, plays a crucial role in precisely controlling the refrigerant flow rate and pressure drop.

[0030] Reference Figure 1 , Figure 2 and Figure 3A chilled water pump 8 is installed on the side of pipe 3 (19) near the chilled water storage tank 7, and a chilled water pump 9 is installed on the side of pipe 4 (20) near the chilled water storage tank 7. The outlets of chiller unit 3, chilled water storage tank 7, and combined cooling and heating unit 6 are connected via pipe 3 (19), which is also connected to the inlet of terminal 5 to ensure effective supply of cold source to the terminal. A combined cooling and heating circulating water pump 10 is installed on the side of pipe 4 (20) near the combined cooling and heating unit 6, and a chilled water pump 4 is installed on the side of pipe 4 (20) near terminal 5. The inlets of chiller unit 3, chilled water storage tank 7, and combined cooling and heating unit 6 are connected via pipe 4 (20) and are also connected to the outlet of terminal 5, forming a complete water circulation loop to recover the return water from terminal 5 for further treatment or reuse. Pipe 5 (21) is installed on one side of terminal 5, and the other end of pipe 5 (21) passes through air cooler 11 and is reconnected to terminal 5. During cooling, the refrigerant from the cold source absorbs heat from the room at terminal 5 and rises in temperature. It then enters the air cooler 11 through pipe 5 to exchange heat and cool down before returning to terminal 5 for circulation. During heating, the heat transfer refrigerant releases heat and cools down at terminal 5. It then enters the air cooler 11 through pipe 5 for heat-related processing before returning to terminal 5 for circulation heating.

[0031] Working principle: During off-peak hours at night, chiller unit 3 starts operating to produce low-temperature chilled water. At this time, the chilled water storage pump 9 starts, transporting the low-temperature chilled water produced by chiller unit 3 to the chilled water storage tank 7 for storage. During peak hours in the daytime, the chilled water in the storage tank 7 is supplied to the main power grid for storage through the discharge pump 8 to meet the usage needs of different periods. By using this method of storing chilled water during off-peak hours and using it during peak hours, the difference in electricity prices is rationally utilized to achieve the goal of energy conservation.

[0032] When a high-temperature heat source is needed for the dehumidifier, the combined cooling and heating unit 6 can simultaneously produce chilled water. This chilled water is then supplied to the main pipeline for storage via the combined cooling and heating circulating water pump 10, achieving coordinated operation of heat supply and chilled water production and improving overall energy utilization efficiency. The chiller unit 3 can flexibly adjust the amount of chilled water supplied to the main pipeline for storage based on changes in the main pipeline load through variable frequency operation, thereby better adapting to actual needs and avoiding energy waste or insufficient supply. Relying on the control center of the cooling and heating energy station, the three parallel subsystem components—chiller unit 3, water storage tank, and combined cooling and heating—cooperate and adjust with each other. They work collaboratively, dynamically adjusting their respective operating states according to actual cooling, heating, and cold storage needs, enabling the entire energy station to output loads that meet demand more efficiently.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency integrated cooling and heating energy station, comprising a base, characterized in that: The upper part of the base is fixedly connected to a cooling tower (1), a chiller unit (3), a terminal (5), a combined cooling and heating unit (6), and a cold water storage tank (7). The outlet of the cooling tower (1) and the inlet of the chiller unit (3) are connected by a pipe (17). The outlet of the chiller unit (3) and the inlet of the cooling tower (1) are connected by a pipe (28). The cold water outlet of the chiller unit (3) is connected to a pipe (39). The end of the pipe (3) away from the chiller unit (3) is connected to the terminal (5), the combined cooling and heating unit (6), and the cold water storage tank (7). The hot water inlet of the chiller unit (3) is connected to a pipe (40). The end of the pipe (40) away from the chiller unit (3) is connected to the terminal (5), the combined cooling and heating unit (6), and the cold water storage tank (7).

2. The high-efficiency integrated cooling and heating energy station according to claim 1, characterized in that: The second pipe (18) and the first pipe (17) work together to operate the cooling tower (1) and the chiller unit (3) in a cyclical manner.

3. The high-efficiency integrated cooling and heating energy station according to claim 1, characterized in that: The combined cooling and heating unit (6) is equipped with an air cooler (11), a regenerator (12), a throttle valve (13), an oil separator (14), a compressor (15), and an evaporator (16). The outlet end of the oil separator (14) is fixedly connected to a pipe (22). The other end of the pipe (22) passes through the air cooler (11), the regenerator (12), the evaporator (16), the regenerator (12), and the compressor (15) in sequence and is then reconnected to the inlet end of the oil separator (14). A throttle valve (13) is installed in the middle of the pipe (22) located between the regenerator (12) and the throttle valve (13).

4. The high-efficiency integrated cooling and heating energy station according to claim 1, characterized in that: A cooling water pump (8) is installed on the side of the third pipe (19) near the cooling water tank (7), and a cooling water pump (9) is installed on the side of the fourth pipe (20) near the cooling water tank (7).

5. The high-efficiency integrated cooling and heating energy station according to claim 1, characterized in that: A combined cooling and heating circulating water pump (10) is installed on the side of the pipe (20) near the combined cooling and heating unit (6), and a chilled water pump (4) is installed on the side of the pipe (20) near the end (5).

6. The high-efficiency integrated cooling and heating energy station according to claim 1, characterized in that: One side of the end (5) is equipped with a pipe five (21), and the other end of the pipe five (21) passes through the air cooler (11) and is reconnected to the end (5).

7. The high-efficiency integrated cooling and heating energy station according to claim 1, characterized in that: A cooling water pump (2) is installed on a pipe (17) near one end of the chiller unit (3).

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