Cooperative utilization device for low-temperature liquid gasification cold energy and data center waste heat

Abstract

The utility model provides a device for collaborative utilization of low-temperature liquid gasification cold energy and data center waste heat, which belongs to the field of comprehensive utilization of energy and comprises a cold energy recovery module, a container type data center module, a heat energy collaborative module and an intelligent control system. The low-temperature liquid gasification cold energy is used for refrigerating the data center for free, meanwhile, waste heat of the data center is ingeniously used for assisting low-temperature liquid gasification, the measure remarkably reduces energy consumption of the data center and the gasification process, the PUE value of the data center can be reduced to 1.1 or below, the energy consumption proportion of a cooling system is greatly reduced, and the power consumption of a gasifier is reduced by 30% or above. The gasification rate is increased by 10%-20%, cold energy is effectively applied, considerable cooling cost is saved for the data center, and the overall economic benefit of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of comprehensive energy utilization, and in particular to a device for the synergistic utilization of cryogenic liquid vaporization cold energy and waste heat from data centers. Background Technology

[0002] Cryogenic liquids (such as LNG, liquid nitrogen, and liquid oxygen) release a large amount of cold energy during vaporization. In traditional processes, this cold energy is mostly lost through ambient air vaporizers, resulting in energy waste. Data centers consume a large amount of electricity for heat dissipation, with traditional cooling systems accounting for up to 40% of energy consumption. In existing technologies, cold energy recovery and waste heat utilization are mostly independent systems, lacking coordinated optimization design. Therefore, a device for the coordinated utilization of cold energy from cryogenic liquid vaporization and waste heat from data centers is proposed. Utility Model Content

[0003] In view of this, the present invention aims to provide a device for the synergistic utilization of cryogenic liquid vaporization cold energy and waste heat from data centers, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0004] The technical solution of this utility model embodiment is implemented as follows: a device for the synergistic utilization of low-temperature liquid vaporization cold energy and waste heat from data centers, including a cold energy recovery module, a containerized data center module, a heat energy synergistic module, and an intelligent control system.

[0005] in:

[0006] The cold energy recovery module includes a cryogenic liquid storage tank, a multi-stage heat exchanger group, and a cold energy transmission pipeline;

[0007] The containerized data center module includes a containerized server compartment, a liquid cooling circulation system, and a waste heat recovery device.

[0008] The thermal energy co-processing module includes a gasification auxiliary heat exchanger and a heat medium circulation system;

[0009] The intelligent control system includes a temperature sensor, a PLC controller, and a cloud monitoring platform.

[0010] In some embodiments: the cryogenic liquid storage tank is used to store cryogenic liquids, such as LNG, liquid nitrogen, liquid oxygen, etc., to provide a source for obtaining cold energy; the cold energy transmission pipeline includes a temperature / flow regulating valve, which can accurately allocate and regulate cold energy according to the cooling needs of the data center.

[0011] In the above embodiments: the multi-stage heat exchanger group is made of titanium alloy, which is highly corrosion resistant, and includes a first-stage, a second-stage, and a third-stage heat exchanger, which respectively realize efficient heat exchange between cryogenic liquid and refrigerant, refrigerant and data center coolant, and refrigerant and computer room return air, wherein the efficiency of each stage of heat exchanger is not less than 85%, 90%, and 80%, respectively.

[0012] In the above embodiments: the containerized server compartment adopts a modular design with a single compartment capacity of ≥20kW, which can be flexibly expanded according to actual needs to meet data processing requirements of different scales. The liquid cooling circulation system adopts a composite structure of cold plate liquid cooling and immersion cooling, which efficiently removes server heat and ensures stable operation. The waste heat recovery device has a medium-temperature water circuit with a temperature set at 40℃-60℃ to recover server waste heat and provide a basis for subsequent utilization.

[0013] In the above embodiments: the vaporization auxiliary heat exchanger is arranged at the front end of the vaporizer, and uses the waste heat recovered from the data center to assist in heating the low-temperature liquid, thereby improving the vaporization efficiency. The heat medium circulation system uses propylene glycol aqueous solution as the medium to transfer heat between the waste heat of the data center and the vaporization auxiliary heat exchanger, thereby achieving effective heat energy transfer.

[0014] In the above embodiments: the sensor is used to collect parameters such as temperature, pressure, and flow rate of key nodes in the system in real time; the PLC controller analyzes and processes the data according to a preset fuzzy PID algorithm, dynamically adjusts the flow rate of cold / heating medium, and realizes dynamic energy balance of the system; the cloud monitoring platform provides remote monitoring and management functions to ensure stable operation of the system.

[0015] In the above embodiments, safety protection and other auxiliary devices are also included, such as refrigerant leakage monitoring devices, overpressure protection devices, low temperature protection devices, fire and gas leakage protection devices, electrical safety protection devices, and emergency shutdown devices, to ensure the safe operation of the system under various working conditions.

[0016] In the above embodiments: the LNG vaporization temperature range is -162℃ to 5℃, the liquid nitrogen vaporization temperature range is -196℃ to 5℃, and the liquid oxygen vaporization temperature range is -183℃ to 5℃; the refrigerant inlet temperature is -50℃ to -10℃, the server coolant temperature is 25℃ to 45℃, the computer room return air pre-cooling temperature is 15℃ to 25℃, the data center waste heat temperature is 40℃ to 60℃, and the vaporization auxiliary heating temperature is 5℃ to 15℃.

[0017] In the above embodiments, the refrigerant flow rate ranges from 5 to 20 m³ / h. 3 / h, working pressure range is 0.5-2.0MPa; heat medium flow rate range is 3-15m³ / h. 3 / h, with a working pressure range of 0.3-1.5MPa.

[0018] The present invention has the following advantages due to the adoption of the above technical solution:

[0019] I. This utility model utilizes cryogenic liquid vaporization cooling energy to provide free cooling for data centers. Simultaneously, it cleverly leverages waste heat from the data center to assist in cryogenic liquid vaporization. This measure significantly reduces energy consumption in both the data center and the vaporization process, lowering the data center's PUE value to below 1.1. The energy consumption proportion of the cooling system is drastically reduced, vaporizer power consumption is reduced by more than 30%, and the vaporization rate is increased by 10%-20%. The effective use of cooling energy saves considerable cooling costs for the data center and improves the overall economic efficiency of the device.

[0020] Second, by reducing the consumption of traditional energy and the emission of waste heat, this utility model reduces thermal pollution and greenhouse gas emissions to the environment. A single module can reduce CO2 emissions by ≥200 tons per year, which helps promote sustainable development and has good environmental benefits.

[0021] Third, this utility model adopts a modular design, with each module working independently yet collaboratively, exhibiting strong adaptability. For example, the modular design of the containerized server compartment allows the data center scale to be flexibly expanded according to actual needs. The cold energy recovery module and the heat energy coordination module can adapt to different types of cryogenic liquids and the waste heat characteristics of the data center. The intelligent control system can adjust parameters according to actual operating conditions, ensuring stable and efficient operation of the device under various working environments and conditions. In addition, the device is equipped with comprehensive safety protection and auxiliary devices such as refrigerant leakage monitoring, overpressure protection, cryogenic protection, fire and gas leakage protection, electrical safety protection, and emergency shutdown. These devices monitor the system's operating status in real time, promptly identify and address various safety hazards, ensuring the device operates in a safe and reliable environment, and effectively avoiding economic losses and production interruption risks caused by safety accidents.

[0022] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural flow diagram of a device for the synergistic utilization of cryogenic liquid vaporization cold energy and waste heat from data centers, according to this utility model. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0027] In this invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," and "fixation" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, a direct connection, a welding connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the accompanying drawings and specific circumstances.

[0028] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] like Figure 1 As shown, this utility model embodiment provides a device for the synergistic utilization of cryogenic liquid vaporization cold energy and data center waste heat, characterized in that it includes a cold energy recovery module, a containerized data center module, a heat energy synergy module, and an intelligent control system;

[0030] in:

[0031] The cold energy recovery module includes a cryogenic liquid storage tank, a multi-stage heat exchanger assembly, and cold energy transmission pipelines;

[0032] The containerized data center module includes a containerized server bay, a liquid cooling circulation system, and a waste heat recovery device.

[0033] The thermal energy co-processing module includes a gasification auxiliary heat exchanger and a heat medium circulation system;

[0034] The intelligent control system includes temperature sensors, PLC controllers, and a cloud monitoring platform.

[0035] Specifically, cryogenic liquid storage tanks are used to store cryogenic liquids such as LNG, liquid nitrogen, and liquid oxygen, providing a source for cold energy acquisition. The cold energy transmission pipelines include temperature / flow regulating valves, which can precisely allocate and regulate cold energy according to the cooling needs of the data center.

[0036] Specifically, the multi-stage heat exchanger assembly is made of titanium alloy, which has strong corrosion resistance. It includes primary, secondary and tertiary heat exchangers, which respectively achieve efficient heat exchange between cryogenic liquid and refrigerant, refrigerant and data center coolant, and refrigerant and computer room return air. The efficiency of each heat exchanger is no less than 85%, 90% and 80%, respectively.

[0037] Specifically, the containerized server compartment adopts a modular design with a single compartment capacity of ≥20kW, which can be flexibly expanded according to actual needs to meet data processing requirements of different scales. The liquid cooling circulation system adopts a composite structure of cold plate liquid cooling and immersion cooling, which efficiently removes server heat and ensures stable operation. The waste heat recovery device has a medium-temperature water circuit with a temperature set at 40℃-60℃ to recover server waste heat and provide a basis for subsequent utilization.

[0038] Specifically, the gasification auxiliary heat exchanger is arranged at the front end of the gasifier, using the waste heat recovered from the data center to assist in heating the low-temperature liquid and improve the gasification efficiency. The heat medium circulation system uses propylene glycol aqueous solution as the medium to transfer heat between the waste heat of the data center and the gasification auxiliary heat exchanger, thereby achieving effective heat energy transfer.

[0039] Specifically, sensors are used to collect parameters such as temperature, pressure, and flow rate at key nodes in the system in real time. The PLC controller analyzes and processes the data according to a preset fuzzy PID algorithm, dynamically adjusts the flow rate of cold / hot media, and achieves dynamic energy balance in the system. The cloud monitoring platform provides remote monitoring and management functions to ensure stable system operation.

[0040] Specifically, it also includes safety protection and other auxiliary devices, such as refrigerant leak monitoring devices, overpressure protection devices, cryogenic protection devices, fire and gas leak protection devices, electrical safety protection devices, and emergency shutdown devices, to ensure the safe operation of the system under various working conditions.

[0041] Specifically, the LNG vaporization temperature range is -162℃ to 5℃, the liquid nitrogen vaporization temperature range is -196℃ to 5℃, and the liquid oxygen vaporization temperature range is -183℃ to 5℃; the refrigerant inlet temperature is -50℃ to -10℃, the server coolant temperature is 25℃ to 45℃, the computer room return air pre-cooling temperature is 15℃ to 25℃, the data center waste heat temperature is 40℃ to 60℃, and the vaporization auxiliary heating temperature is 5℃ to 15℃.

[0042] Specifically, the refrigerant flow rate ranges from 5 to 20 m³ / h. 3 / h, working pressure range is 0.5-2.0MPa; heat medium flow rate range is 3-15m³ / h. 3 / h, with a working pressure range of 0.3-1.5MPa.

[0043] The operating conditions are shown in the following figure:

[0044]

[0045] In this embodiment, the present invention operates as follows: Cryogenic liquid flows from the cryogenic liquid storage tank and enters a multi-stage heat exchanger group. In this group, the cryogenic liquid sequentially exchanges heat with the refrigerant. The first-stage heat exchanger transfers cold energy to the refrigerant, achieving heat exchange between LNG / liquid nitrogen / liquid oxygen and the refrigerant. The second-stage heat exchanger further transfers the cold energy of the refrigerant to the data center coolant, meeting the server cooling requirements. The third-stage heat exchanger utilizes the remaining cold energy of the refrigerant to pre-cool the return air of the computer room. After multi-stage heat exchange, the cryogenic liquid gradually vaporizes, while the refrigerant, carrying cold energy, is transported through a cold energy transmission pipeline, under the precise control of a temperature / flow regulating valve, to the data center's liquid cooling circulation system, providing efficient cooling for the servers. The servers in the data center generate a large amount of heat during operation. The liquid cooling circulation system collects this heat and converts it into a 40℃-60℃ medium-temperature water circuit through a waste heat recovery device. The heat transfer system then transfers the waste heat from the medium-temperature water circuit to a vaporization auxiliary heat exchanger to auxiliary heat the cryogenic liquid at the front end of the vaporizer. In this process, the propylene glycol aqueous solution in the heat transfer medium circulates between the waste heat of the data center and the vaporization auxiliary heat exchanger, achieving efficient heat transfer and utilization, thereby improving the vaporization efficiency of the cryogenic liquid. The intelligent control system collects the system's operating parameters in real time through temperature sensors, pressure sensors, and flow sensors distributed at various key nodes of the system. The PLC controller analyzes and processes these parameters according to a preset fuzzy PID algorithm to calculate the system's current energy demand and balance state. Then, based on the calculation results, the PLC controller dynamically adjusts the flow rate of the cold / hot medium, and achieves dynamic energy balance of the system by controlling the speed of the cold and hot medium circulation pumps and adjusting the opening of relevant valves. At the same time, the cloud monitoring platform receives the data uploaded by the PLC controller in real time. Users can remotely monitor the system's operating status, view various parameters and alarm information through the cloud monitoring platform, and perform remote operation and control when necessary to ensure that the system is always in a stable and efficient operating state.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for synergistic utilization of low-temperature liquid gasification cold energy and data center waste heat, characterized in that: The application relates to a cold energy recovery module, a container type data center module, a heat energy collaborative module and an intelligent control system. The cold energy recovery module comprises a low-temperature liquid storage tank, a multi-stage heat exchanger group and a cold energy transmission pipeline. The container type data center module comprises a container type server cabin, a liquid cooling circulation system and a waste heat recovery device. The heat energy collaborative module comprises a gasification auxiliary heat exchanger and a heat medium circulation system. The intelligent control system comprises a temperature sensor, a PLC controller and a cloud monitoring platform. The low-temperature liquid storage tank is used for storing low-temperature liquid and providing a source for cold energy acquisition. 2.The device of claim 1, wherein: The multi-stage heat exchanger group is made of titanium alloy and comprises a primary heat exchanger, a secondary heat exchanger and a tertiary heat exchanger. 3.The device of claim 1, wherein: The container type server cabin is designed in a modular manner and has a single box capacity of greater than or equal to 20kW.

4. The device of claim 1, wherein the device is characterized in that: The gasification auxiliary heat exchanger is arranged at the front end of a gasifier and is used for heating low-temperature liquid by using waste heat recovered from the data center.

5. The device of claim 1, wherein the device is characterized in that: The heat medium circulation system adopts propylene glycol water solution as a medium and transfers heat between the data center waste heat and the gasification auxiliary heat exchanger.

6. The device of claim 1, wherein, The sensor is used for collecting temperature, pressure and flow parameters of key nodes in the system in real time.

7. The device of claim 1, wherein, The cloud monitoring platform provides remote monitoring and management functions and ensures stable operation of the system. 8.The device of claim 6, wherein, The application further comprises safety protection and other auxiliary devices to ensure safe operation of the system under various working conditions. The LNG gasification temperature ranges from-162 DEG C to 5 DEG C, the liquid nitrogen gasification temperature ranges from-196 DEG C to 5 DEG C, the liquid oxygen gasification temperature ranges from-183 DEG C to 5 DEG C, the cold medium inlet temperature ranges from-50 DEG C to-10 DEG C, the server cooling liquid temperature ranges from 25 DEG C to 45 DEG C, the computer room return air precooling temperature ranges from 15 DEG C to 25 DEG C, the data center waste heat temperature ranges from 40 DEG C to 60 DEG C and the gasification auxiliary heating temperature ranges from 5 DEG C to 15 DEG C. 9.The device of claim 6, wherein, wherein the refrigerant flow rate range is 5-20 m 3 / h, and the working pressure range is 0.5-2.0 MPa; the heat medium flow rate range is 3-15 m 3 / h, and the working pressure range is 0.3-1.5 MPa.

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