CN-122002768-A - Data center waste heat cascade utilization method, system, equipment and medium

CN122002768ACN 122002768 ACN122002768 ACN 122002768ACN-122002768-A

Abstract

The invention discloses a cascade utilization method, a cascade utilization system, cascade utilization equipment and cascade utilization medium for waste heat of a data center, wherein the cascade utilization method comprises the steps of performing temperature measurement on a liquid cooling working medium of a data center server to obtain waste heat temperature, and determining an available waste heat utilization subsystem according to the waste heat temperature; the method comprises the steps of combining current environment parameters, energy consumption requirements and available waste heat utilization subsystems, determining a waste heat utilization strategy by adopting a reinforcement learning model, controlling a valve group to regulate the flow direction of a liquid cooling working medium according to the waste heat utilization strategy, enabling the liquid cooling working medium to flow through the corresponding waste heat utilization subsystems for cascade utilization according to the waste heat utilization strategy, returning the liquid cooling working medium to a server liquid cooling circulation system after cascade utilization is completed, completing waste heat recovery circulation, collecting energy consumption data of a data center, and evaluating the effect of cascade utilization of the waste heat. According to the invention, by constructing the waste heat temperature grading judgment mechanism, the accurate identification and reasonable distribution of waste heat resources of different grades are realized.

Inventors

JIANG SHIXIAO
SUN YINGYING
ZHANG DINGMING
YANG JIANHUI
ZHANG YAN
NING NAN
YUAN LONG
MA ZONGJUN
LI QINGSHENG
CHEN LISHA
Fan Junqiu
ZHOU ZHONGQIANG
ZHAN LEGUI
LUO XI

Assignees

贵州电网有限责任公司

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (10)

1. The data center waste heat cascade utilization method is characterized by comprising the following steps of: the method comprises the steps of performing temperature measurement on a liquid cooling working medium of a data center server to obtain waste heat temperature, and determining an available waste heat utilization subsystem according to the waste heat temperature; Determining a waste heat utilization strategy by combining current environmental parameters, energy consumption requirements and an available waste heat utilization subsystem and adopting a reinforcement learning model, and controlling a valve group to regulate the flow direction of the liquid cooling working medium according to the waste heat utilization strategy; The liquid cooling working medium flows through the corresponding waste heat utilization subsystem for cascade utilization according to the waste heat utilization strategy; After cascade utilization is completed, the liquid cooling working medium returns to the server liquid cooling circulation system to complete waste heat recovery circulation, energy consumption data of the data center are collected, and the effect of cascade utilization of the waste heat is evaluated.
2. The data center waste heat gradient utilization method of claim 1, wherein the waste heat utilization subsystem comprises a power generation subsystem, a dehumidification subsystem, and a heating subsystem, and wherein determining available waste heat utilization subsystems based on the waste heat temperature comprises: when the waste heat temperature is greater than or equal to a power generation temperature threshold, the available waste heat utilization subsystem comprises a power generation subsystem, a dehumidification subsystem and a heating subsystem; when the waste heat temperature is less than or equal to a heating temperature threshold, the available waste heat utilization subsystem comprises a heating subsystem; When the waste heat temperature is between the power generation temperature threshold and the heating temperature threshold, the available waste heat utilization subsystem includes a dehumidification subsystem and a heating subsystem.
3. The data center waste heat cascade utilization method of claim 2, wherein the waste heat utilization strategy comprises a flow distribution ratio and an operation mode of each waste heat utilization subsystem; When the operation modes are in series connection, the liquid cooling working medium sequentially flows through the waste heat utilization subsystems; when the operation modes are parallel connection, the liquid cooling working medium is split according to the flow distribution proportion and enters the corresponding waste heat utilization subsystem respectively, and after cascade utilization, confluence is completed; When the operation mode is mixing, the liquid cooling working medium is divided into a plurality of paths, part of the paths flow through the plurality of waste heat utilization subsystems in a serial connection mode, part of the paths directly enter the single waste heat utilization subsystem, and all the paths are converged after cascade utilization is completed.
4. The data center waste heat gradient utilization method of claim 3, wherein the power generation subsystem is an organic rankine cycle power generation system, and the step of flowing a liquid cooling working medium through the power generation subsystem comprises: The liquid cooling working medium is heated to a preset power generation temperature through a heat pipe heat exchanger, and the heated liquid cooling working medium exchanges heat with a power generation circulation system to drive the power generation circulation system to work; the power generation circulation system drives the generator to generate power, and the generated power is fed back to the data center server; the temperature of the liquid cooling working medium after heat exchange is reduced, flows out of the power generation subsystem, and enters the next stage of waste heat utilization subsystem or returns to the server liquid cooling circulation system.
5. The method for cascade utilization of waste heat in a data center of claim 4, wherein the dehumidification subsystem is a desiccant cooling heat exchange system, and the step of flowing a liquid cooling medium through the dehumidification subsystem comprises: the liquid cooling working medium exchanges heat with the machine room return air, the machine room return air is heated into regenerated hot air, and the drying agent is regenerated through the regenerated hot air; The regenerated drying agent adsorbs moisture in the air of the data center machine room and outputs dry air to the data center machine room; The temperature of the liquid cooling working medium after heat exchange is reduced, flows out of the dehumidification subsystem, and enters the next stage of waste heat utilization subsystem or returns to the server liquid cooling circulation system.
6. The method for cascade utilization of waste heat in a data center of claim 5, wherein the heating subsystem is a water source heat pump heating system, and the step of flowing a liquid cooling medium through the heating subsystem comprises: absorbing heat of the liquid cooling working medium through a heat pump circulation system, heating circulating water after the heat is lifted to a preset heating temperature, Conveying the heated heating circulating water to heating equipment at the tail end of the building; And the temperature of the liquid cooling working medium after heat exchange is reduced, and the liquid cooling working medium returns to the liquid cooling circulation system of the server.
7. The data center waste heat cascade utilization method of claim 6, wherein the step of evaluating an effect of the waste heat cascade utilization comprises: The method comprises the steps of respectively collecting IT equipment energy consumption, cooling system energy consumption and other equipment energy consumption of a data center, and calculating an electric energy use efficiency index, wherein the electric energy use efficiency index is calculated in the following manner: ; Wherein the PUE is an index of the utilization efficiency of electric energy, For the energy consumption of IT equipment, In order to cool the energy consumption of the system, Energy consumption for other equipment; And evaluating the effect of waste heat cascade utilization according to the electric energy use efficiency index, and judging that the energy efficiency reaches the standard when the electric energy use efficiency index is lower than a preset threshold value.
8. A data center waste heat gradient utilization system applying the method of any of claims 1-7, comprising: The temperature measurement module is used for measuring the temperature of the liquid cooling working medium of the data center server to obtain the waste heat temperature, and determining an available waste heat utilization subsystem according to the waste heat temperature; The control module is used for determining a waste heat utilization strategy by adopting a reinforcement learning model in combination with the current environmental parameters, the energy consumption requirements and the available waste heat utilization subsystem; The valve group is used for adjusting the flow direction of the liquid cooling working medium according to the waste heat utilization strategy; the waste heat utilization subsystem comprises at least one of a power generation subsystem, a dehumidification subsystem and a heating subsystem and is used for receiving the liquid cooling working medium and performing cascade utilization; and the server liquid cooling circulation system is used for receiving the liquid cooling working medium after the cascade utilization is completed and completing the waste heat recovery circulation.
9. An electronic device, comprising: A memory and a processor; The memory is configured to store computer-executable instructions that, when executed by the processor, perform the steps of the data center waste heat gradient utilization method of any of claims 1 to 7.
10. A computer readable storage medium storing computer executable instructions which when executed by a processor perform the steps of the data center waste heat gradient utilization method of any of claims 1 to 7.

Description

Data center waste heat cascade utilization method, system, equipment and medium Technical Field The invention relates to the technical field of waste heat recovery, in particular to a data center waste heat cascade utilization method, system, equipment and medium. Background With the rapid development of digital economies, the construction scale of data centers is also continually expanding. The data show that the electricity consumption of the data center in China breaks through 1500 hundred million kilowatt-hours in 2023, and the electricity consumption is expected to increase to 4000 hundred million kilowatt-hours in 2025. In the energy consumption structure, IT equipment accounts for 50%, a cooling system accounts for 37%, and a large amount of waste heat generated by IT equipment is usually directly discharged through the cooling system, so that energy waste is caused, and the index of the electric energy use efficiency of the data center is kept high. However, the existing data center waste heat recovery technology often adopts a single application mode, for example, the technology is only used for heating or power generation, and the fixed utilization mode is difficult to adapt to the change of energy consumption requirements in different seasons, so that waste heat resources are idle in non-heating seasons. More notably, in the prior art, for the lack of planning of the waste heat temperature, different grade heat energy is often subjected to mixed treatment or is only singly utilized aiming at a specific temperature interval, so that the power generation potential of the high-temperature waste heat cannot be fully exerted, and the medium-temperature waste heat and the low-temperature waste heat are directly cooled and discharged. In addition, most of the current waste heat utilization systems are subsystems which independently operate, and functional modules such as power generation, dehumidification and heating lack effective integration and cooperative control, so that operation strategies cannot be dynamically adjusted according to implementation environment parameters and energy consumption requirements, and the improvement space of waste heat utilization efficiency is limited. Disclosure of Invention The present invention has been made in view of the above-described problems occurring in the prior art. Therefore, the invention provides a data center waste heat cascade utilization method, a system, equipment and a medium, which solve the problems that the waste heat utilization mode is single, the waste heat temperature lacks cascade planning, and meanwhile, the coordination among subsystems is insufficient in the prior art. In order to solve the technical problems, the invention provides the following technical scheme: The invention provides a cascade utilization method of waste heat of a data center, which comprises the steps of measuring the temperature of a liquid cooling working medium of a server of the data center to obtain the temperature of the waste heat, determining an available waste heat utilization subsystem according to the temperature of the waste heat, determining a waste heat utilization strategy by combining current environment parameters, energy consumption requirements and the available waste heat utilization subsystem through a reinforcement learning model, controlling a valve group to regulate the flow direction of the liquid cooling working medium according to the waste heat utilization strategy, enabling the liquid cooling working medium to flow through the corresponding waste heat utilization subsystem for cascade utilization according to the waste heat utilization strategy, returning the liquid cooling working medium to a liquid cooling circulation system of the server after cascade utilization is completed, completing waste heat recovery circulation, collecting energy consumption data of the data center, and evaluating the cascade utilization effect of the waste heat. The data center waste heat cascade utilization method comprises the steps of determining available waste heat utilization subsystems according to waste heat temperature, wherein the available waste heat utilization subsystems comprise a power generation subsystem, a dehumidification subsystem and a heating subsystem when the waste heat temperature is greater than or equal to a power generation temperature threshold, the available waste heat utilization subsystems comprise a heating subsystem when the waste heat temperature is less than or equal to a heating temperature threshold, and the available waste heat utilization subsystems comprise a dehumidification subsystem and a heating subsystem when the waste heat temperature is between the power generation temperature threshold and the heating temperature threshold. The optimal technical scheme has the beneficial effect that reasonable distribution of waste heat resources of different grades is realized by establishing a grading judgment mechanism accordi