Multi-mode energy-saving data center cooling device

Abstract

The utility model relates to the technical field of cooling devices, and discloses a multi-mode energy-saving data center cooling device which comprises a control system, a data center condenser, data center evaporation refrigeration equipment, a closed cooling tower and a water source heat pump water heating unit, the data center evaporation refrigeration equipment, the data center condenser and the water source heat pump water heating unit are connected in series through pipelines to form circulation; the data center condenser, the water source heat pump water heating unit, the closed cooling tower and the data center evaporation refrigeration equipment are connected in series through pipelines to form circulation; the water source heat pump water heating unit comprises an evaporator, a compressor, a condensation piece, an expansion valve, a plate heat exchanger and a water pump which are connected in series.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling devices, and in particular to a multi-mode energy-saving data center cooling device. Background Art

[0002] As the scale of data centers continues to expand and the demand for information processing increases, the cooling system of data centers must pursue higher energy efficiency and lower operating costs while ensuring reliability. Traditional data center cooling systems usually rely on a single mode of operation and are difficult to achieve efficient operation under different load conditions. In response to this challenge, this application proposes a multi-mode data center cooling system, and combines waste heat recovery technology to further improve the overall energy efficiency of the system. It can flexibly switch operating modes under different load conditions to ensure efficient cooling of the data center, while achieving effective recovery and utilization of waste heat, greatly improving the overall energy efficiency of the system. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a multi-mode energy-saving data center cooling device, which solves the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A multi-mode energy-saving data center cooling device, including a control system and a data center condenser, a data center evaporative cooling device, a closed cooling tower and a water source heat pump water heating unit that are efficiently operated by the control system;

[0006] The data center evaporative cooling equipment, the data center condenser and the water source heat pump hot water unit are connected in series through pipelines to form a circulation;

[0007] The data center condenser, water source heat pump hot water unit, closed cooling tower and data center evaporative cooling equipment are connected in series through pipelines to form a circulation;

[0008] The water source heat pump water heating unit comprises an evaporator, a compressor, a condensing element, an expansion valve, a plate heat exchanger and a water pump which are arranged in series.

[0009] Optionally, the inlet of the data center condenser is connected to the water outlet of the data center evaporative cooling equipment through a pipeline to receive hot water.

[0010] Optionally, the inlet of the evaporator is connected to the outlet of the data center condenser, and the evaporator has two water outlets, one is connected to the inlet of the data center evaporative cooling equipment, and the other is connected to the inlet of the closed cooling tower.

[0011] Optionally, the compressor inlet is connected to the evaporator refrigerant outlet, and the outlet is connected to the condensation element inlet.

[0012] Optionally, the condensing element outlet is connected to the expansion valve inlet, the condensing element hot water inlet is connected to the external waste hot water side inlet, and the condensing element hot water outlet is connected to the high-temperature hot water side inlet of the plate heat exchanger.

[0013] Optionally, the expansion valve outlet is connected to the refrigerant inlet of the evaporator.

[0014] Optionally, the high-temperature hot water side outlet of the plate heat exchanger is connected to an external domestic hot water system, and the waste hot water side outlet of the plate heat exchanger is connected to an external low-grade waste hot water pipeline.

[0015] Optionally, there are multiple water pumps installed at the inlet and outlet of the evaporator, condenser and plate heat exchanger.

[0016] Optionally, the outlet of the closed cooling tower is connected to the inlet of the evaporative cooling equipment of the data center.

[0017] The utility model provides a multi-mode energy-saving data center cooling device, which has the following beneficial effects:

[0018] 1. The water source heat pump unit is connected in series with the closed cooling tower. After the closed cooling tower cools the cooling water, the water source heat pump cools it down again.

[0019] 2. When the cooling load of the data center is not high, only the water source heat pump unit can be used to cool the cooling water, saving the energy consumption of the closed cooling tower fan.

[0020] 3. Low-grade waste heat can be upgraded to hot water twice the original temperature through a water source heat pump unit and used in domestic hot water systems, which can reduce the cooling energy consumption of data centers.

[0021] 4. It can flexibly switch the operating mode under different load conditions to ensure efficient cooling of the data center, while achieving effective recovery and utilization of waste heat, greatly improving the overall energy efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model.

[0023] In the figure: 1. Data center condenser; 2. Data center evaporative cooling equipment; 3. Closed cooling tower; 4. Water source heat pump hot water unit; 41. Evaporator; 42. Compressor; 43. Condensation element; 44. Expansion valve; 45. Plate heat exchanger; 46. Water pump; 5. Control system. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0025] In the description of the present invention, it should be understood that the terms "lateral", "longitudinal", "end", "edge", "sidewall", "up", "down", "upper part", "lower part", "directly above", "surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "end", "head" and "tail" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solution of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] This application proposes a multi-mode energy-saving data center cooling device, which is as follows:

[0027] For reference Figure 1 The present application is mainly composed of a control system 5 and a data center condenser 1 that depends on the control system 5 for efficient operation, a data center evaporative cooling equipment 2, a closed cooling tower 3 and a water source heat pump water heating unit 4, wherein the water source heat pump water heating unit 4 includes an evaporator 41, a compressor 42, a condensing element 43, an expansion valve 44, a plate heat exchanger 45 and a water pump 46 arranged in series, wherein the condensing element 43 is the existing condenser.

[0028] To further illustrate, the control system 5 of the present application is a construction of a common automation system in the existing art, which is roughly composed of a central controller responsible for overall coordination and control of the operation of each subsystem, sensors installed at key points to monitor parameters such as temperature, flow, pressure, etc., actuators including valves that execute control system commands, and a communication network that connects various components to achieve data transmission and command issuance. The main monitoring parameters are the inlet and outlet temperatures of the condenser, the inlet and outlet temperatures of the water source heat pump evaporator, the inlet and outlet temperatures of the closed cooling tower, the temperature of low-grade waste hot water, the high-temperature hot water temperature, and the water flow and pressure.

[0029] Specifically, data collection is performed first during work, and sensors (temperature sensors) are installed at the data center condenser outlet, water source heat pump evaporator side inlet and outlet, closed cooling tower inlet and outlet, low-grade waste hot water inlet, high-temperature hot water outlet, and plate heat exchanger high-temperature hot water side outlet; sensors (flow sensors) are installed on each main pipeline to monitor water flow; sensors (pressure sensors) are installed on each component connecting pipeline, and the most critical position is selected according to actual conditions to monitor pressure changes.

[0030] Control and execute operations, the central controller processes data from sensors, runs control algorithms, and sends instructions to actuators; the actuator controls valves to control the path selection of water flow, controls water pump 46 to adjust the operating speed and state of water pump 46, wherein there are multiple water pumps 46 installed at the inlet and outlet of evaporator 41, condenser 43 and plate heat exchanger 45; ensures the stability of water flow and controls compressor 42 to control and adjust the compressor 42 of the water source heat pump, and controls the switching of heating and cooling modes.

[0031] Finally, during operation, the control algorithm is processed by the control system 5 to decide whether to switch to the high load mode according to the cooling load of the data center. Among them, the automatic control of water flow movement and switching is a common installation setting structure in the existing conventional system, and this application does not elaborate on the structure of the control system 5.

[0032] Three automatic process operations can be realized through the control system 5: normal operation mode, high load operation mode and waste heat recovery mode.

[0033] Normal operating mode: The data center evaporative cooling equipment 2, the data center condenser 1 and the water source heat pump water heating unit 4 are connected in series through pipes to form a circulation; specifically, the cooling water flows out from the outlet of the data center evaporative cooling equipment 2 (low-temperature evaporation side) and enters the inlet of the data center condenser 1, and the high-temperature cooling water flows out from the outlet of the data center condenser 1 and enters the inlet of the evaporator 41 side of the water source heat pump water heating unit 4. After the water source heat pump water heating unit 4 cools the cooling water (about 25 degrees), the cooling water flows out from the outlet of the evaporator 41 side of the water source heat pump water heating unit 4 and returns to the inlet of the data center evaporative cooling equipment 2, completing a cycle.

[0034] It should be noted that the data center evaporative cooling device 2 is an existing device, which is a device that achieves cooling by absorbing heat through liquid evaporation, and is usually used for high-efficiency cooling of data centers.

[0035] High-load operation mode: The data center condenser 1, water source heat pump water heater 4, closed cooling tower 3 and data center evaporative cooling equipment 2 are connected in series through pipelines to form a cycle. When the control system 5 detects that the cooling load of the data center is high (detected by each set of sensors), high-temperature cooling water flows out from the outlet of the data center condenser 1 and enters the side inlet of the evaporator 41 of the water source heat pump water heater 4. The cooling water after preliminary cooling flows out from the side outlet of the evaporator 41 and enters the closed cooling tower 3 for further cooling. The pre-cooled cooling water flows out from the outlet of the closed cooling tower 3 and returns to the inlet of the data center evaporative cooling equipment to complete the cycle.

[0036] Waste heat recovery mode: connect the external low-grade waste hot water to the inlet of the condensation element 43 of the water source heat pump water heater 4. The condensation element 43 elevates the waste hot water to high-temperature hot water, and the hot water flows out from the side outlet of the condensation element 43 of the water source heat pump water heater 4 and enters the plate heat exchanger 45. The plate heat exchanger 45 transfers the heat to the external domestic hot water system, and the high-temperature hot water flows out from the high-temperature hot water side outlet of the plate heat exchanger 45 for domestic use. After heat exchange, the low-grade waste hot water returns to the low-grade waste hot water pipeline for recycling.

[0037] Through the above working steps, the multi-mode operation and efficient energy utilization of the data center cooling system can be effectively realized to meet the cooling needs under different load conditions, while recycling waste heat to improve the overall energy efficiency of the system.

[0038] In the utility model, the working steps of the device are as follows:

[0039] 1. The cooling water comes out of the data center condenser with a temperature of about 30 degrees and enters the water source heat pump water heating unit 4. The water source heat pump water heating unit 4 reduces its temperature to 25 degrees. The cooling water returns from the data center condenser. When the load is high, the cooling water comes out of the water source heat pump and first enters the closed cooling tower 3 for pre-cooling, and then returns to the water source heat pump for further cooling.

[0040] 2. Low-grade waste heat cooling water (20-30 degrees) enters the condensing element 43 of the water source heat pump water heater 4. The water source heat pump water heater 4 increases the low-grade heat to high-grade hot water of 55-60 degrees. The high-grade hot water is transferred to the domestic hot water system through the plate heat exchanger 45 for domestic use.

[0041] 3. The closed cooling tower 3 is connected to the data center condenser 1 and the data center evaporative cooling equipment 2 through the plate heat exchanger 45. When additional cooling is required, the cooling water enters the closed cooling tower 3 for pre-cooling, and then exchanges heat with the cooling data center condenser 1 and the data center evaporative cooling equipment 2 through the plate heat exchanger 45 to increase the cooling effect.

[0042] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-mode energy-saving data center cooling device, characterized in that: It includes a control system (5) and a data center condenser (1) that operates efficiently based on the control system (5), a data center evaporative cooling device (2), a closed cooling tower (3) and a water source heat pump water heater unit (4); The data center evaporative cooling equipment (2), the data center condenser (1) and the water source heat pump hot water machine (4) are connected in series via pipelines to form a circulation; The data center condenser (1), the water source heat pump water heater (4), the closed cooling tower (3) and the data center evaporative cooling equipment (2) are connected in series via pipelines to form a circulation; The water source heat pump water heating unit (4) comprises an evaporator (41), a compressor (42), a condensing element (43), an expansion valve (44), a plate heat exchanger (45) and a water pump (46) which are arranged in series.

2. The multi-mode energy-saving data center cooling device according to claim 1, characterized in that: The inlet of the data center condenser (1) is connected to the water outlet of the data center evaporative cooling equipment (2) through a pipeline to receive hot water.

3. The multi-mode energy-saving data center cooling device according to claim 1, characterized in that: The inlet of the evaporator (41) is connected to the outlet of the data center condenser (1). The evaporator (41) has two water outlets, one connected to the inlet of the data center evaporative cooling equipment (2), and the other connected to the inlet of the closed cooling tower (3).

4. The multi-mode energy-saving data center cooling device according to claim 1, characterized in that: The compressor (42) has an inlet connected to the refrigerant outlet of the evaporator (41), and an outlet connected to the inlet of the condensing element (43).

5. The multi-mode energy-saving data center cooling device according to claim 1, characterized in that: The outlet of the condensing element (43) is connected to the inlet of the expansion valve (44), the hot water inlet of the condensing element (43) is connected to the inlet of the external waste hot water side, and the hot water outlet of the condensing element (43) is connected to the high-temperature hot water side inlet of the plate heat exchanger (45).

6. The multi-mode energy-saving data center cooling device according to claim 1, characterized in that: The outlet of the expansion valve (44) is connected to the refrigerant inlet of the evaporator (41).

7. The multi-mode energy-saving data center cooling device according to claim 1, characterized in that: The high-temperature hot water side outlet of the plate heat exchanger (45) is connected to an external domestic hot water system, and the waste hot water side outlet of the plate heat exchanger (45) is connected to an external low-grade waste hot water pipeline.

8. The multi-mode energy-saving data center cooling device according to claim 1, characterized in that: There are multiple water pumps (46) installed at the inlet and outlet of the evaporator (41), the condensing element (43) and the plate heat exchanger (45).

9. The multi-mode energy-saving data center cooling device according to claim 1, characterized in that: The outlet of the closed cooling tower (3) is connected to the inlet of the data center evaporative cooling equipment (2).

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