CN113175712B - Multifunctional cooling method and system integrating free cooling and heat recovery - Google Patents

Multifunctional cooling method and system integrating free cooling and heat recovery Download PDF

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CN113175712B
CN113175712B CN202110445781.5A CN202110445781A CN113175712B CN 113175712 B CN113175712 B CN 113175712B CN 202110445781 A CN202110445781 A CN 202110445781A CN 113175712 B CN113175712 B CN 113175712B
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cooling
cooling water
heat
data center
heat energy
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CN113175712A (en
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于惠
张旭
陈玉军
金利峰
李通
唐亚彬
刘凯
黄杨坤
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Wuxi Jiangnan Computing Technology Institute
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Wuxi Jiangnan Computing Technology Institute
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20763—Liquid cooling without phase change
    • H05K7/2079—Liquid cooling without phase change within rooms for removing heat from cabinets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
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  • Fuzzy Systems (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a multifunctional cooling method and a multifunctional cooling system integrating free cooling and heat recovery, which comprises the steps of obtaining cooling conditions of a data center, adjusting a cooling mode of the data center according to the cooling conditions, and obtaining the heat energy recovery efficiency of cooling water of the data center in a current cooling mode; acquiring the heat demand of an auxiliary mechanism, calculating the available range of the heat carried by the current cooling water, and outputting a response auxiliary mechanism in the available range; calling the current cooling water distribution to a response-available subsidiary mechanism for exchange type heat energy supply, and synchronously adjusting the self-heating efficiency of the response-available subsidiary mechanism according to the heat energy exchange efficiency; and recovering the cooling water which completes heat energy exchange with the response auxiliary mechanism, and guiding the cooling water to a cooling tower of the data center for recycling. The invention can improve the efficiency of the refrigeration system to the maximum extent and realize the green and energy-saving of the cooling system of the data center while realizing the refrigeration requirement of the data center.

Description

Multifunctional cooling method and system integrating free cooling and heat recovery
Technical Field
The invention relates to the technical field of data center refrigeration and heat recovery, in particular to a multifunctional cooling method and system integrating free cooling and heat recovery.
Background
With the rapid development of industries such as cloud computing, big data, internet of things and the like, the data center is used as a carrier for massive data operation and storage, the increase speed of quantity and scale is accelerated year by year and the data center is rapidly developed, and meanwhile, the energy consumption is huge, and the development concept of green and energy conservation is generally paid attention. Through statistics and analysis, in the data center faced with the challenge of high energy consumption, the energy consumption of the refrigeration system accounts for about 40% of the total energy consumption of the data center, so that the new technology is used for improving the energy saving level of the refrigeration system, reducing the power consumption and improving the energy efficiency, and the core consensus in the industry is achieved.
Against the background, multiple technologies such as free refrigeration, heat recovery and the like are introduced in the design of a refrigeration system of a data center, so that the refrigeration requirement of the data center is ensured, and the energy consumption of the refrigeration system is reduced to the maximum extent.
Disclosure of Invention
The invention aims to provide a multifunctional cooling method and a multifunctional cooling system integrating free cooling and heat recovery, wherein the refrigerating system has the functions of single-mode or multi-mode operation such as a mechanical refrigerating mode, a free cooling mode, a heat recovery mode and the like, the refrigerating requirement of a data center is met, the efficiency of the refrigerating system is improved to the maximum extent, and the green and energy-saving effects of the data center cooling system are achieved.
According to a first aspect of the present invention, a multifunctional cooling method integrating free cooling and heat recovery is provided, comprising:
acquiring a cooling condition of the data center, adjusting a refrigeration mode of the data center according to the cooling condition, and acquiring the heat energy recovery efficiency of cooling water of the data center in the current refrigeration mode;
acquiring the heat demand of an auxiliary mechanism, calculating the available range of the heat carried by the current cooling water, and outputting a responsive auxiliary mechanism in the available range;
calling the current cooling water to be distributed to the responsive affiliates for exchange type heat energy supply, and synchronously adjusting the self-heating power of the responsive affiliates according to the heat energy exchange efficiency;
and recovering the cooling water which completes heat energy exchange with the response auxiliary mechanism, and guiding the cooling water to a cooling tower of the data center for recycling.
Further, the cooling condition includes season information corresponding to the position of the data center and outdoor temperature; the method for acquiring the cooling condition of the data center and adjusting the refrigeration mode of the data center according to the cooling condition specifically comprises the following steps:
acquiring outdoor temperature, and judging whether the outdoor temperature meets the free refrigeration condition or not;
when the free refrigeration condition cannot be met, adjusting the refrigeration mode of the data center to a mechanical refrigeration mode, and transferring heat from chilled water to cooling water by refrigerating waste heat generated by the data center through a cold water unit;
when the free refrigeration condition is met, the refrigeration mode of the data center is adjusted to the free refrigeration mode, waste heat generated by the data center is transferred from chilled water to cooling water through the plate heat exchanger, and a water chilling unit is not started;
when the free refrigeration condition is insufficient, adjusting the refrigeration mode of the data center to a mixed refrigeration mode, and judging whether the temperature of cooling water is lower than the temperature of chilled water: when the temperature of the cooling water is lower than the temperature of the chilled water, a mixed refrigeration mode is adopted, and the temperature of the discharged water is controlled by a chilled water unit after the cooling water and the chilled water enter a plate heat exchanger for heat exchange; and when the temperature of the cooling water is not lower than the temperature of the chilled water, adopting a mechanical refrigeration mode.
Further, acquiring the heat energy recovery efficiency of the data center in the current refrigeration mode specifically includes:
acquiring a refrigeration mode used by a data center in a current time period;
respectively detecting the temperature difference of chilled water and cooling water before and after heat exchange, and calculating the heat energy recovery efficiency of the cooling water in the current refrigeration mode, wherein the heat energy recovery efficiency is used for reflecting the heat energy carrying capacity when the cooling water in the current refrigeration mode is discharged;
when the refrigeration mode is a free refrigeration mode, the heat energy recovery efficiency can reflect the real refrigeration effect, and the heat energy carrying amount when the cooling water is discharged is controlled by the plate-type exchanger;
when the refrigeration mode is a mechanical refrigeration mode, the heat energy recovery efficiency is controlled by the water chilling unit, and the heat energy carrying amount when the cooling water is discharged is controlled by the water chilling unit;
when the refrigeration mode is a hybrid refrigeration mode, the heat energy recovery efficiency is controlled by the water chilling unit, and the heat energy carrying amount when the cooling water is discharged is controlled by the water chilling unit.
Furthermore, the treatment mode of the heat energy carried by the cooling water during the discharge comprises the following steps:
when the auxiliary mechanism does not have heat demand, guiding cooling water carrying heat energy into an outdoor cooling tower of the data center, and releasing the heat energy into the atmosphere;
when the heat demand of the auxiliary mechanism exists, cooling water carrying heat energy is guided into a heat exchange pipeline of the auxiliary mechanism to carry out exchange type heat energy supply on the auxiliary mechanism, wherein the heat demand of the auxiliary mechanism comprises hot water supply and heating supply.
Further, acquiring a heat demand of an attachment, calculating a response range of the heat carried by the current cooling water, and outputting a response-able attachment according to the heat demand, includes:
detecting the outdoor temperature of an auxiliary mechanism, and judging whether the current auxiliary mechanism has heat demand according to the outdoor temperature;
acquiring the distance between each affiliated mechanism and the data center, and calculating the heat energy transmission attenuation of each affiliated mechanism;
acquiring the heat energy carrying amount when the cooling water is discharged, calculating the available supply range of the current cooling water according to the heat energy transmission attenuation of each affiliated mechanism, and marking the affiliated mechanisms within the available supply range as responsive affiliated mechanisms;
outputting a list of all available responsiveaffiliates for which there is a demand for heat within a provisionable range;
detecting whether there is a need for energy supply to a responsive affiliate within the list:
if yes, the current available response affiliation is classified into a distribution list;
if not, the currently-responded affiliated mechanism is classified into a pending list;
and detecting the energy supply requirements of the response auxiliary institutions in the pending list and the distribution list in real time, and refreshing the list.
Further, invoking the current cooling water distribution to the responsive affiliates for the switched heat energy supply, and synchronously adjusting the self-heating power of the responsive affiliates according to the heat energy exchange efficiency, specifically comprising:
calling the current cooling water to be guided into a heat exchange pipeline of a response-enabled affiliate, starting a heat energy exchanger of the response-enabled affiliate in the distribution list, and exchanging heat with the current cooling water carrying heat energy;
the water outlet temperature of the heat energy exchanger capable of responding to the auxiliary mechanism is detected, the self-heating power of the auxiliary mechanism is adjusted according to the temperature requirement capable of responding to the auxiliary mechanism, and the energy consumption is reduced.
Further, the method for recycling the cooling water after heat energy exchange with the response auxiliary mechanism is recovered and guided to the cooling tower of the data center for recycling specifically comprises the following steps:
predefining a recovery temperature;
when the cooling water circulates back to the data center after the cooling water completes the heat energy exchange with the response attachment, whether the temperature of the circulating back cooling water is higher than the recovery temperature is detected:
if the temperature is higher than the recovery temperature, starting a water chiller to refrigerate and compensate the circulated cooling water, and guiding the circulated cooling water to a cooling tower of the data center;
and if the temperature is not higher than the recovery temperature, directly guiding the cooling water circulated back to a cooling tower of the data center.
According to a second aspect of the present invention, there is provided a multi-functional cooling system that integrates free cooling and heat recovery, comprising:
a refrigeration control module: acquiring a cooling condition of the data center, adjusting a refrigeration mode of the data center according to the cooling condition, and acquiring the heat energy recovery efficiency of cooling water of the data center in the current refrigeration mode;
an energy supply request module: acquiring the heat demand of an auxiliary mechanism, calculating the available range of the heat carried by the current cooling water, and outputting a response auxiliary mechanism in the available range;
a demand response module: calling the current cooling water to be distributed to the responsive affiliates for exchange type heat energy supply, and synchronously adjusting the self-heating power of the responsive affiliates according to the heat energy exchange efficiency;
a recycling module: and recovering the cooling water which completes heat energy exchange with the response auxiliary mechanism, and guiding the cooling water to a cooling tower of the data center for recycling.
According to a third aspect of the present invention, there is provided an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method steps of any of the above first aspects when executing the computer program.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the method steps of any of the above first aspects.
The invention has the beneficial effects that:
1. the invention provides a multifunctional cooling method and a multifunctional cooling system integrating free cooling and heat recovery, which are a cooling system with a conventional mechanical refrigeration function, a free cooling function and a heat recovery function and capable of realizing various mixed refrigeration modes and meet the refrigeration requirements in different seasons and different operation modes.
2. The judgment condition of free refrigeration is outdoor temperature, and the outdoor temperature is used as the judgment standard of the heat demand of the affiliated institution, so that the relevance control and adjustment of the refrigeration mode and the heat recovery of the data center are realized.
3. In a free cooling mode, a water chilling unit does not need to be started for refrigeration compensation, the refrigeration efficiency of the system can be improved, and the PUE value can reach below 1.1.
4. Under the heat recovery mode, the heat supply is provided for surrounding residents, and meanwhile, the carbon emission is greatly reduced, and the purposes of energy conservation and environmental protection are achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.
FIG. 1 is a flow chart of a multi-functional cooling method incorporating free cooling and heat recovery in accordance with an embodiment of the present invention;
FIG. 2 is a modular block diagram of a multi-functional cooling system incorporating free cooling and heat recovery in accordance with an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a refrigeration system according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is to be understood that the drawings in the following description are merely exemplary of the invention and that other drawings and embodiments can be derived by those skilled in the art without undue burden. The designation of the design orientation merely indicates the relative positional relationship between the respective members, not the absolute positional relationship.
Example one
According to a first aspect of the present invention, there is provided a flow chart of a multifunctional cooling method for integrating free cooling and heat recovery, as shown in fig. 1, comprising:
step S101: the method comprises the steps of obtaining a cooling condition of the data center, adjusting a refrigeration mode of the data center according to the cooling condition, and obtaining the heat energy recovery efficiency of cooling water of the data center in the current refrigeration mode.
In the embodiment of the invention, waste heat of the machine room of the data center is absorbed by chilled water, the chilled water is guided to perform heat energy exchange with cooling water, the waste heat in the chilled water is converted into the cooling water, the discharged cooling water carries the waste heat, the waste heat can be output to the outside, and the output form can be directly radiated to the atmosphere or can be used for supplying heat energy for other heat-requiring equipment. It can be understood that corresponding antifreeze can be added into the chilled water to lower the freezing point, so that the chilled water can normally circulate when the temperature is too low, and the cooling demand of the data center is ensured. The chilled water only runs in a cooling circulation system of the data center and does not flow into the outside.
The discharged cooling water is located in the external environment, and the external environment temperature has a great influence on the natural cooling of the cooling water. When the external environment temperature is low, the discharged cooling water can be directly used for free refrigeration by using the low temperature of the external environment, the cooling efficiency of the low-temperature environment is high, the refrigeration cycle is short, and the quick and efficient refrigeration can be realized; when the temperature of the external environment is higher, the high temperature of the external environment does not have a cooling effect on the discharged cooling water, and mechanical refrigeration is needed at the moment; when the external environment temperature is suitable in the middle, the temperature of the external environment may have a certain cooling effect on the discharged cooling water, but the efficiency is lower, the refrigeration cycle is longer, and the high-efficiency quick refrigeration is not enough realized.
Can divide external environment's temperature according to the cooling cycle of the cooling water under external environment's the temperature and the natural heat dissipation state, data center's heat dissipation demand: when the discharged cooling water is naturally cooled only by the external environment temperature and the cooling efficiency can meet the heat dissipation requirement of the data center, the external environment temperature is considered to realize a free refrigeration condition; when the temperature of the external environment is higher than the temperature of the discharged cooling water, the external environment cannot naturally radiate the discharged cooling water, and the external environment is considered to be incapable of realizing free refrigeration; when the temperature of the external environment is lower than that of the discharged cooling water but the difference is not great, although the external environment has a natural heat dissipation effect on the discharged cooling water, the cooling efficiency is too low to realize rapid cooling, and the free cooling condition of the external environment is considered to be insufficient.
Specifically, a judgment interval can be divided for the external environment temperature according to the season and temperature change characteristics of the position of the data center, and if the external environment temperature is lower than the judgment interval, the condition of free refrigeration is judged to be achieved; the external environment temperature in the judgment interval is judged to be insufficient for free refrigeration; if the external environment temperature is higher than the judgment interval, the free refrigeration condition can not be reached.
In the embodiment of the invention, the data center can be provided with a plurality of refrigeration modes, and the refrigeration modes can be regulated and controlled according to the cooling conditions of the data center. The cooling mode can comprise free refrigeration, mechanical refrigeration and mixed refrigeration. The free refrigeration is suitable for low external environment temperature, the refrigeration condition can be directly obtained, and large extra refrigeration energy consumption is not needed; the mechanical refrigeration is suitable for the condition that the external environment temperature is high, the cooling water can be refrigerated through the water chiller, and the refrigeration energy consumption is high; the mixed refrigeration is suitable for external environment temperature in a certain range, low temperature of complete free refrigeration is not provided, and high temperature of complete starting mechanical refrigeration is not provided, so that the refrigeration mode can be adjusted to a mixed mode, and the mixed mode comprises partial free refrigeration and partial mechanical refrigeration.
Specifically, in the hybrid refrigeration mode, whether the temperature of the cooling water is lower than the temperature of the chilled water or not can be judged, if the temperature of the cooling water is higher than the temperature of the chilled water, the cooling cannot be performed through the outdoor low-temperature environment, and the refrigeration mode is adjusted to mechanical refrigeration; if the temperature of the cooling water is lower than the temperature of the chilled water, the cooling water and the chilled water can be guided to the plate heat exchanger for heat exchange, and then the temperature of the water is controlled through the water cooling unit, so that the aim of cooling the data center is fulfilled. Meanwhile, the water chilling unit can carry out refrigeration compensation on cooling water, and the cooling effect of the cooling water is enhanced.
In the embodiment of the invention, the cooling condition comprises season information and outdoor temperature corresponding to the position of the data center; the seasonal information has a certain correlation with the outdoor temperature, and the seasonal change has a certain correlation with the outdoor temperature and the heat demand of the affiliated institution. The cooling condition of the data center can be used as a regulation and control judgment basis of a cooling mode, and specifically comprises the following steps:
acquiring outdoor temperature, and judging whether the outdoor temperature reaches a free refrigeration condition; after the outdoor temperature is obtained, local seasonal historical temperature information can be called as reference data, abnormal data can be manually checked, eliminated and screened, and therefore free refrigeration conditions of the external environment can be accurately judged according to the outdoor temperature.
When the free refrigeration condition cannot be met, adjusting the refrigeration mode of the data center to a mechanical refrigeration mode, and transferring heat from chilled water to cooling water by refrigerating waste heat generated by the data center through a cold water unit; the external environment temperature is high, and the condition of free refrigeration is not provided at all, and the environment temperature generally appears in normal summer, and at the moment, the auxiliary mechanism basically has no heating requirement. At the moment, the refrigeration mode of the data center is adjusted to a mechanical refrigeration mode, heat exchange is carried out through the water chiller, and waste heat in the machine room is transferred to cooling water through chilled water.
When the cooling water is in high-temperature summer, the treatment mode of the cooling water carrying waste heat can be directly conveyed and guided to an outdoor cooling tower of the data center, and the waste heat is directly discharged into the atmosphere; the waste heat can also be transmitted to the auxiliary mechanism to exchange heat with a hot water supply system of the auxiliary mechanism, so that heat energy is provided for the hot water supply system of the auxiliary mechanism, and low-temperature water in the hot water supply system is lifted by utilizing the waste heat to be used.
When the free refrigeration condition is met, the refrigeration mode of the data center is adjusted to the free refrigeration mode, waste heat generated by the data center is transferred from chilled water to cooling water through the plate heat exchanger, and a water chilling unit is not started; the external environment temperature is low, the direct refrigeration condition is achieved, the external low-temperature environment has a good refrigeration effect, the refrigeration cycle is short, the rapid and efficient refrigeration can be achieved, the refrigeration compensation is not needed, the external environment can achieve free refrigeration completely, the refrigeration power consumption is greatly reduced, and the ambient temperature generally appears in normal winter. At the moment, the refrigeration mode of the data center is adjusted to a free refrigeration mode, heat exchange is carried out through the plate heat exchanger, and waste heat in the machine room is transferred to cooling water through chilled water.
When the temperature is low in winter, the cooling water carrying waste heat is directly conveyed and guided to an outdoor cooling tower of the data center, and a large amount of heat energy is wasted. The cooling water carrying waste heat can be conveyed and guided to an auxiliary mechanism with heat requirement for heat energy recovery and reuse. In cold winter, the auxiliary mechanism has heating requirements and hot water supply requirements, so that cooling water carrying waste heat can be used for diversified heat energy supply of the auxiliary mechanism, and the power consumption of a self-heating system of the auxiliary mechanism is reduced.
When the free refrigeration condition is insufficient, the refrigeration mode of the data center is adjusted to the mixed refrigeration mode, whether the temperature of cooling water is lower than the temperature of chilled water or not is judged, and when the temperature of the cooling water is lower than the temperature of the chilled water, the cooling water and the chilled water are adjusted to enter the plate heat exchanger for heat exchange, and then the temperature of outlet water is controlled by the chilled water unit. The external environment temperature is not enough to realize complete free refrigeration, the efficiency of the free refrigeration only through the external environment is low, refrigeration compensation is needed through the water chiller unit, the refrigeration effect is improved, the environment temperature generally appears in normal spring and autumn, and hot water supply requirements and heating requirements may exist in an auxiliary mechanism.
At this time, the refrigeration mode of the data center should be adjusted to a hybrid refrigeration mode, before the hybrid refrigeration mode is performed, whether the temperature of cooling water is lower than the temperature of chilled water or not should be detected, if the temperature of the cooling water is lower than the temperature of the chilled water, it is indicated that an external environment has a certain free refrigeration condition, and the hybrid refrigeration mode can be started; if the temperature of the cooling water is not lower than the temperature of the chilled water, the external environment does not have free refrigeration conditions, and the refrigeration mode can be adjusted to the mechanical refrigeration mode.
Under the mixed refrigeration mode, the chilled water carrying waste heat of the data center enters the plate heat exchanger together with cooling water for heat exchange, and then is subjected to refrigeration compensation through the water chiller unit, so that the water outlet temperature is controlled, the temperature of the chilled water can be reduced, and the cooling demand of the data center is ensured.
It can be understood that the water chilling unit has a refrigeration effect, but the power consumption is large, the plate heat exchanger does not have the refrigeration effect, and the plate heat exchanger can only be used for heat exchange between chilled water and cooling water, and the power consumption is extremely low.
It can be understood that the chilled water is recycled in the data center, so that the chilled water with a lower temperature is discharged from the cooling system and then returns to the data center again to perform a cooling task, and a better cooling effect is achieved, and the cooling demand of the data center can be ensured.
In the embodiment of the invention, a plurality of cooling towers can be arranged outside the data center, when the data center is cooled, the plurality of cooling towers can be used alternately, and the cooling water in the plurality of cooling towers with the lowest temperature can be selected for calling. In one embodiment, the plurality of cooling towers may be connected to each other, and three cooling towers are taken as an example, and the first cooling tower is selected as a transfer tower for directly transferring cooling water, the second cooling tower is selected as a standing tower for dissipating heat of standing cooling water, and the third cooling tower is selected as a receiving tower for directly receiving cooling water carrying waste heat. The receiving tower is used for directly receiving cooling water carrying waste heat and circulating cooling water, after preliminary heat dissipation is temporarily stored, the receiving tower is conveyed to the standing tower to dissipate heat for a long time, the cooling water in the standing tower conforms to a cold taking condition and is conveyed to the calling tower, and after the calling tower receives the calling requirement of the cooling water, the calling tower conveys the cooling water in the receiving tower to a data center to exchange heat with chilled water, and the cooling water is sequentially recycled. In another embodiment, no communication pipeline is arranged between the plurality of cooling towers, each cooling tower is provided with an independent communication pipeline with the data center, the cooling water in the cooling tower is selected and used according to the temperature of the cooling water in the cooling tower, and the cooling water carrying waste heat and the cooling water circulated back are filled into the cooling tower with higher temperature and lower residual quantity.
It will be appreciated that for the first embodiment, different configurations may be provided depending on the function of each cooling tower to accommodate its functional requirements. For the second embodiment, when the cooling water is filled into the cooling tower, the cooling tower with higher temperature and lower margin is filled preferentially, and the specific weight priority can be adjusted according to the actual situation, or the subjective operation is performed by the staff.
In the embodiment of the invention, after heat exchange is carried out between chilled water and cooling water in the data center, waste heat is transferred to the cooling water from the chilled water, the temperature difference between the chilled water and the cooling water before and after heat exchange can be respectively detected, the heat energy recovery efficiency of the cooling water is calculated, the heat energy carrying capacity of the cooling water is quantitatively evaluated, and the estimation of the heat energy supply range of the cooling water is convenient. Specifically, obtaining the heat energy recovery efficiency of the cooling water of the data center in the current refrigeration mode specifically includes:
acquiring a refrigeration mode used by a data center in a current time period; due to the temperature change of the external environment, the refrigeration mode can be changed at any time, the refrigeration mode of the current time period can be obtained firstly, and then the refrigeration mode marked with a timestamp is bound with the heat energy recovery efficiency to form a historical record, so that the query is facilitated.
Respectively detecting the temperature difference of the chilled water and the cooling water before and after heat exchange, and calculating the heat energy recovery efficiency of the cooling water in the current refrigeration mode, wherein the heat energy recovery efficiency is used for reflecting the heat energy carrying amount when the cooling water in the current refrigeration mode is discharged; it can be understood that the temperature difference before and after the heat exchange of the chilled water is detected, and the heat energy lost by the chilled water can be calculated; the temperature difference of the cooling water before and after heat exchange is detected, and the heat energy obtained by the cooling water can be calculated, so that the heat energy recovery efficiency of the cooling water in the current refrigeration mode can be calculated. According to the refrigeration modes of different refrigeration modes, the heat energy recovery efficiency can reflect the corresponding refrigeration effect, and the data examination and judgment of workers are facilitated. Furthermore, when the heat energy is supplied to the auxiliary mechanism, the range of the heat supply area can be estimated accurately.
When the refrigeration mode is a free refrigeration mode, the heat energy recovery efficiency can reflect the real refrigeration effect, and the heat energy carrying amount when the cooling water is discharged is controlled by the plate-type exchanger.
When the refrigeration mode is a mechanical refrigeration mode, the heat energy recovery efficiency is controlled by a water chilling unit, and the heat energy carrying amount when cooling water is discharged is controlled by the water chilling unit; the temperature of the cooling water is influenced and controlled by the water chilling unit when the cooling water is discharged.
When the refrigeration mode is a mixed refrigeration mode, the heat energy recovery efficiency is controlled by the water chilling unit, and the heat energy carrying amount when the cooling water is discharged is controlled by the water chilling unit; the temperature of the cooling water is influenced and controlled by the water chilling unit when the cooling water is discharged.
In the embodiment of the invention, the free refrigeration mode only comprises pure heat energy exchange and heat energy overflow and dissipation, and the heat energy recovery efficiency can truly reflect the working efficiency of the plate heat exchanger. When a mechanical refrigeration mode exists, the temperature of cooling water is influenced and controlled by the refrigeration power consumption intensity of the water chilling unit, and the heat energy recovery efficiency can be used as reference data.
In the embodiment of the invention, residential buildings, hotels and the like with heat energy demands around the data center can be used as auxiliary institutions, and waste heat generated by the data center can be used for supplying heat energy to the auxiliary institutions. The treatment mode of the heat energy carried by the cooling water when being discharged at least comprises the following two treatment modes under the influence of seasonal outdoor temperature:
when the subsidiary institutions do not have heat requirements, cooling water carrying heat energy can be guided into an outdoor cooling tower of the data center, and the heat energy is released into the atmosphere.
When the heat demand exists in the auxiliary mechanism, cooling water carrying heat energy can be guided into a heat exchange pipeline of the auxiliary mechanism to supply the auxiliary mechanism with heat energy in an exchange mode. The cooling water is not directly contacted with and mixed with the hot water of the heating system of the auxiliary mechanism.
The heat demand of the auxiliary institutions comprises hot water supply in any season and heating supply in heating seasons.
Step S102: the method comprises the steps of acquiring the heat demand of an auxiliary mechanism, calculating the available supply range of the heat carried by the current cooling water, and outputting a response auxiliary mechanism within the available supply range.
In the embodiment of the invention, the heat energy carried in the cooling water is limited, the heat energy carrying amount of the cooling water can be obtained by detecting the temperature of the cooling water, and the heat energy carrying amount of the cooling water can be influenced and controlled by adjusting the refrigeration intensity of the water chilling unit. The distance between the auxiliary mechanism and the data center can influence the laying length of the conveying pipeline, and the heat energy is gradually attenuated in the conveying process, so that the effective function range of the cooling water carrying the heat energy is limited, the current supply range of the cooling water carrying the heat energy can be calculated according to the heat energy carrying amount, the heat energy transmission attenuation and the heat energy exchange efficiency, and the heat energy is supplied in the supply range. Because the heat energy of the discharged cooling water is changed, the supply range is changed accordingly, under the condition of keeping the current refrigeration mode unchanged, the heat energy carrying capacity of the discharged cooling water is generally not changed greatly, and the range of the demand response can be basically determined.
When the cooling mode is changed, the carrying amount of the heat energy of the discharged cooling water may be changed, and the changed supply range may affect the effective supply of the heat energy, so that the cooling water carrying the heat energy may output the affiliate having the energy supply requirement within the response range as the actual heat energy requirement unit to be supplied with the heat energy by the waste heat of the data center after the determination of the heat energy requirement response range of the affiliate.
In an embodiment of the present invention, the determination of the response-enabled range and the response-enabled affiliate specifically includes:
detecting the outdoor temperature of an auxiliary mechanism, and judging whether the current auxiliary mechanism has heat demand according to the outdoor temperature; and judging the heat demand of the current auxiliary mechanism according to the outdoor temperature of the auxiliary mechanism, feeding the heat demand back to the self-heating system of the auxiliary mechanism, and initiating a heat supply request to the data center by the self-heating system.
Acquiring the distance between each affiliated mechanism and the data center, and calculating the heat energy transmission attenuation of each affiliated mechanism; the thermal energy transmission attenuation of each subsidiary mechanism can be calculated according to the laying distance of the pipeline, the material of the pipeline, the ambient temperature and the like so as to determine the effective thermal energy supply range.
Acquiring the heat energy carrying amount when the cooling water is discharged, calculating the available supply range of the current cooling water according to the heat energy transmission attenuation of each affiliated mechanism, and marking the affiliated mechanisms within the available supply range as responsive affiliated mechanisms; calculating the heat energy carrying amount according to the temperature of the cooling water when the cooling water is discharged, calculating the effective heat energy supply intensity of the current heat energy after the heat energy transmission attenuation of each auxiliary mechanism, namely, the theoretical residual value when the heat energy is transmitted to the auxiliary mechanism, and classifying the auxiliary mechanism with the theoretical residual value larger than a standard value into an effective range; and then, calculating the theoretical power consumption which can be saved according to the heat exchange efficiency of the heat exchanger of the affiliated mechanism, obtaining the heat supply energy consumption which can be saved theoretically after eliminating the energy consumption in the conveying stage, and deleting the affiliated mechanism with the heat supply energy consumption smaller than the judgment value, thereby obtaining the effective heat supply range. The effective thermal energy supply range is defined as a suppliable range, and the affiliates within the suppliable range are defined as respondent affiliates.
Outputting a list of all available responsiveaffiliates for which there is a demand for heat within a provisionable range; the auxiliary mechanisms which can respond to the heat demand in the available range are output to form a list which can be refreshed in real time, the list can be defined as a prepared list which can supply heat, and the prepared list is refreshed in real time according to the available range.
Detecting whether a responsive attachment having a heat demand within a suppliable range has a power demand:
if yes, the current available response affiliation is classified into a distribution list; illustrating that not only is there a demand for heat, but that a supply of thermal energy is required by the currently responsive affiliate, the responsive affiliate in the distribution list is called from the shortlist.
If not, the currently-responded affiliated mechanism is classified into a pending list; illustrating that currently responsive affiliates are only on demand for heat, but are currently not on demand for heat, the responsive affiliates in the pending list are called from the preliminary list.
And detecting the energy supply requirements of the response auxiliary institutions in the pending list and the distribution list in real time, and refreshing the list. And detecting the energy supply requirements of the responsiveauxiliary mechanisms in the pending list and the distribution list in real time so as to refresh the list at any time for supplying heat energy.
In the embodiment of the present invention, a standard value can be set for the theoretical residual value, and only the affiliated entity above the standard value can access the heat energy supply of the data center. A determination value can be set for theoretically saving heat supply energy consumption so as to determine that the heat supply energy consumption can be always above a certain energy-saving standard. The specific standard value and the determination value can be set according to the actual thermal energy transmission attenuation and the actual thermal energy exchange efficiency.
Step S103: and calling the current cooling water distribution to the responding auxiliary mechanism for exchange type heat energy supply, and synchronously adjusting the self-heating power of the responding auxiliary mechanism according to the heat energy exchange efficiency.
In the embodiment of the present invention, after acquiring the available supply range, further determining the available affiliated entity that needs to supply heat energy, and forming a distribution list in a unified manner, and responding the heat supply demand of the affiliated entity by the data center according to the available affiliated entity list in the distribution list, specifically including:
calling the current cooling water to guide the current cooling water into a heat exchange pipeline capable of responding to the affiliated mechanism, starting a heat energy exchanger capable of responding to the affiliated mechanism in the distribution list, and exchanging heat with the current cooling water carrying heat energy;
the water outlet temperature of the heat energy exchanger capable of responding to the auxiliary mechanism is detected, the self-heating power of the auxiliary mechanism is adjusted according to the temperature requirement capable of responding to the auxiliary mechanism, and the energy consumption is reduced.
It can be understood that each of the attachments may be provided with an independent heat energy exchanger, and when the heat energy is supplied, the cooling water carrying heat is guided to the heat energy exchanger to exchange heat with the low-temperature hot water of the self-heating system of the attachment, so as to increase the temperature of the hot water.
Furthermore, the outlet water temperature of the hot water after the hot water is subjected to heat energy exchange through the heat energy exchanger can be detected, the power of the self-heating system of the auxiliary mechanism is adjusted according to the heating temperature requirement capable of responding to the auxiliary mechanism, compared with low-temperature hot water before the heat energy exchange is not performed, the extra energy required by the hot water is reduced, the power requirement of the self-heating system is reduced, and the energy consumption of the self-heating system in the heating season can be reduced.
Step S104: and recovering the cooling water which completes heat energy exchange with the response auxiliary mechanism, and guiding the cooling water to a cooling tower of the data center for recycling.
In the embodiment of the invention, after the cooling water carrying the heat energy completes the heat energy exchange with the accessory mechanism which can respond, the heat energy carried by the cooling water is greatly reduced, the specific expression is temperature reduction, and the cooling water at the moment can be recycled into the cooling tower and used for exchanging the waste heat of the data center again.
When the cooling water is recovered, the method specifically comprises the following steps:
predefining a recovery temperature; to determine whether the initial temperature of the cooling water circulating back meets the standard.
When the cooling water circulates back to the data center after the cooling water completes the heat energy exchange with the response attachment, whether the temperature of the circulating back cooling water is higher than the recovery temperature is detected:
if the temperature is higher than the recovery temperature, the water chiller is started to perform refrigeration compensation on the cooling water circulated back, and then the cooling water circulated back is guided to the cooling tower of the data center.
If the temperature is not higher than the recovery temperature, the cooling water circulated back is directly guided to a cooling tower of the data center.
It can be understood that the temperature of the cooling water circulated back may be higher than the cooling water in the cooling tower at the current external environment temperature, and therefore, the recovery temperature is set as the determination criterion, and if the temperature is higher than the recovery temperature, it may be considered that refrigeration compensation is needed, and it may be guided to an idle cooling water mechanism for refrigeration compensation, or guided to a cooling tower with less surplus, cooled by the cooling tower, and waits for calling. If the temperature is lower than the recovery temperature, the refrigeration compensation is not needed, and the cooling water circulated back can be directly used for heat exchange of the data center.
Based on the above method steps, in practical applications, the outdoor temperature of the location where the data center is located, and the outdoor temperature of the location where the affiliates are located, are associated with local seasonal changes.
When the local season is in summer, the temperature is generally higher, so the free refrigeration condition cannot be reached, meanwhile, the auxiliary mechanism probably has no more heat demand and can meet the demand by the self-heating system of the auxiliary mechanism. The discharged cooling water of the data center is transported remotely and is not paid.
Therefore, in summer with high outdoor temperature, free cooling conditions can not be reached at all, and heat demand is not used. Waste heat generated by the data center can be directly refrigerated by the supercooled water unit to transfer heat from chilled water to cooling water, and the cooling water is conveyed and guided to an outdoor cooling tower to be cooled and then is discharged into the atmosphere. At this time, the cooling mode of the data center is a full mechanical cooling mode.
When the local season is in spring and autumn, the outdoor temperature in a part of time periods in a day meets the free refrigeration condition, the outdoor temperature in a part of time periods in a day does not meet the free refrigeration condition, meanwhile, the difference of the heat requirements of the affiliated institutions among different individuals is large, and the waste heat of the data center can be conveyed to the affiliated institutions with large requirements for heat energy recycling. At this time, the cooling mode may be adjusted to a hybrid cooling mode to meet variable weather. It can be understood that, under this mode, when the temperature of cooling water was less than the temperature of refrigerated water, can lead cooling water, refrigerated water to plate heat exchanger simultaneously and carry out the heat exchange, cooling water, refrigerated water get into the cooling water set again simultaneously behind the plate heat exchanger, further refrigerate through the cooling water set, reach the purpose of control leaving water temperature.
When the local season is in winter, the temperature is generally low, the completely free refrigeration condition can be achieved, meanwhile, the affiliated mechanisms may have large heat requirements, the radiation range of waste heat of the data center can be calculated according to the heat energy carrying capacity, heat energy transmission attenuation, heat energy conversion efficiency and the like of cooling water of the data center, and the heat energy supply can be carried out on the affiliated mechanisms within the radiation range. For the data center, heat energy transfer can be directly carried out between cooling water and chilled water through the plate heat exchanger, and because outdoor temperature is lower, heat energy transfer effect is good, and simultaneously, a water chilling unit does not need to be opened for refrigeration compensation, so that power consumption can be greatly reduced. After being discharged, the cooling water can be directly conveyed and guided to the cooling tower to discharge heat energy, and also can be conveyed and guided to an auxiliary mechanism to exchange heat energy, so that heat energy is supplied to the auxiliary mechanism, and the basic power consumption of a self-heating system of the auxiliary mechanism is reduced.
For the affiliated entity, in the winter heating season, when the heat consumption is large, the heat supply demand can not be met only by the waste heat in the cooling water discharged from the data center. Therefore, the low-temperature hot water supply of the heat pump unit of the auxiliary mechanism can be firstly subjected to heat exchange with the cooling water carrying the waste heat of the data center through the plate heat exchanger, and then the temperature of the hot water supply is improved through the heat pump unit.
For a data center, the temperature of the recycled circulating cooling water may be too high, and the effect of heat exchange directly used for the data center is far lower than that of low-temperature cooling water standing outdoors, so that the circulating cooling water cannot be directly used for cooling the data center, and can be sent to a cooling tower for cooling and then used. It can be understood that the cooling water circulated back at a higher temperature can raise the overall temperature of the cooling water in the cooling tower, and further, can melt ice.
Example two
According to a second aspect of the present invention, a multi-functional system that integrates free cooling and heat recovery is provided. As shown in fig. 2, a block diagram of a multifunctional cooling system integrating free cooling and heat recovery is shown, comprising:
the refrigeration control module 11: the method comprises the steps of obtaining a cooling condition of the data center, adjusting a refrigeration mode of the data center according to the cooling condition, and obtaining the heat energy recovery efficiency of cooling water of the data center in the current refrigeration mode. It can be understood that the refrigeration control module 11 can automatically switch the refrigeration mode according to the refrigeration condition, and the refrigeration condition can be determined by comprehensive parameters of multi-azimuth external environment information such as the position of the temperature sensor and the data center and the season, so as to accurately obtain the free refrigeration effect of the data center, and adjust the refrigeration mode of the data center, so as to be suitable for different seasons and external temperature changes.
The power supply request module 12: the method comprises the steps of acquiring the heat demand of an auxiliary mechanism, calculating the available range of the heat carried by the current cooling water, and outputting the responsive auxiliary mechanism within the available range. It will be appreciated that other thermal demanding entities near the data center may be defined as affiliates that may recover waste heat from the exhaust cooling water of the data center for their own thermal demands. The affiliated organizations can send heat demands to a cooling control system of the data center, and according to the distance between each affiliated organization and the data center, various factors influencing heat supply, such as attenuation, heat exchange efficiency and the like of heat energy in the conveying process are calculated, so that the response range of the current cooling water discharged by the data center is divided, and the affiliated organizations within the range can enjoy the heat supply of the data center. The affiliated entity may specifically include a residential building, a hotel, and the like.
The demand response module 13: and calling the current cooling water distribution to the responding auxiliary mechanism for exchange type heat energy supply, and synchronously adjusting the self-heating power of the responding auxiliary mechanism according to the heat energy exchange efficiency. It can be understood that the cooling water carrying heat energy can be guided to the attachment mechanism within the response range through the pipeline to exchange heat energy, the heat energy in the cooling water is transferred to the hot water supply of the attachment mechanism, the basic temperature of the hot water supply is improved, the self-heating power of the attachment mechanism can be adjusted according to the basic temperature of the hot water supply, the heating power and the heating time of the self-heating system can be greatly reduced, and the required temperature can be quickly reached.
The recycling module 14: and recovering the cooling water which completes heat energy exchange with the response auxiliary mechanism, and guiding the cooling water to a cooling tower of the data center for recycling. It can be understood that when the cooling water exchanges heat energy for the auxiliary mechanism, the cooling water can only exchange heat energy by adopting the heat energy exchanger, and does not directly contact and mix, thereby reducing the potential safety hazard caused by mixing water quality. Meanwhile, cooling water can be circularly conveyed back to the data center by using pipelines, relay pumps and the like for cyclic utilization. The temperature of the cooling water circulated back can be detected through the temperature sensor, and the direct cooling effect of the cooling water is judged.
Fig. 4 is a schematic diagram of a refrigeration system according to an embodiment of the present invention, where independent transmission pipelines may be disposed between a cooling system of a data center and a cooling tower, a machine room, and an attachment, so that the cooling system may call cooling water in the cooling tower and transmit the cooling water to the machine room to cool the machine room, thereby meeting the refrigeration requirement of the data center; the cooling water discharged by the cooling system can be directly circularly conveyed back to the cooling tower, or can be conveyed back to the cooling tower after being circularly conveyed to an auxiliary mechanism for heat energy supply. And the double-path recycling of the cooling water is realized. Each conveying pipeline can be provided with a relay pump to ensure the conveying efficiency of the cooling water.
It can be understood that the system provided in the embodiment of the present invention is applicable to the method in the first embodiment, and specific functions of each module may refer to the method flow in the first embodiment, which is not described herein again.
EXAMPLE III
The embodiment of the invention provides electronic equipment which is used for realizing the method in the first embodiment. Fig. 3 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention. The electronic device may include: the system comprises at least one central processing unit, at least one network interface, a control interface, a memory and at least one communication bus.
The communication bus is used for realizing connection communication and information interaction among the components.
The network interface may optionally include a standard wired interface, a wireless interface (such as a Wi-Fi interface).
The control interface is used for outputting control operation according to the instruction.
The central processor may include one or more processing cores. The central processing unit connects various parts within the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory, and calling data stored in the memory.
The Memory may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory includes a non-transitory computer-readable medium. The memory may be used to store an instruction, a program, code, a set of codes, or a set of instructions. The memory may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), method steps for implementing embodiment one, and the like; the storage data area may store data and the like referred to in the above respective method embodiments.
The invention also provides a computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method steps of the first embodiment. The computer-readable storage medium may include, but is not limited to, any type of disk including floppy disks, optical disks, DVDs, CD-ROMs, microdrive, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data.
It should be noted that for simplicity of description, the above-mentioned method embodiments are shown as a series of combinations of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some service interfaces, indirect coupling or communication connection of devices or units, and may be electrical or in other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by a program, which is stored in a computer-readable memory, and the memory may include: flash disks, read-Only memories (ROMs), random Access Memories (RAMs), magnetic or optical disks, and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the specific embodiments of the invention be limited to these descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (9)

1. A multifunctional cooling method integrating free cooling and heat recovery is characterized by comprising the following steps:
acquiring a cooling condition of the data center, adjusting a refrigeration mode of the data center according to the cooling condition, and acquiring the heat energy recovery efficiency of cooling water of the data center in the current refrigeration mode;
acquiring the heat demand of an auxiliary mechanism, calculating the available range of the heat carried by the current cooling water, and outputting the available range of the available auxiliary mechanism, wherein the method specifically comprises the following steps: detecting the outdoor temperature of an auxiliary mechanism, and judging whether the current auxiliary mechanism has heat demand according to the outdoor temperature;
acquiring the distance between each affiliated mechanism and the data center, and calculating the heat energy transmission attenuation of each affiliated mechanism;
acquiring the heat energy carrying amount when the cooling water is discharged, calculating the available supply range of the current cooling water according to the heat energy transmission attenuation of each affiliated mechanism, and marking the affiliated mechanisms within the available supply range as responsive affiliated mechanisms;
outputting a list of all available responsiveaffiliates for which there is a demand for heat within a provisionable range;
detecting whether there is a need for energy supply to a responsive affiliate within the list:
if yes, the current available response affiliation is classified into a distribution list;
if not, the currently-responded affiliated mechanism is classified into a pending list;
detecting energy supply requirements of the responsiveauxiliary mechanisms in the pending list and the distribution list in real time, and refreshing the lists;
calling the current cooling water to be distributed to the responsive affiliates for exchange type heat energy supply, and synchronously adjusting the self-heating power of the responsive affiliates according to the heat energy exchange efficiency;
and recovering the cooling water which completes heat energy exchange with the response auxiliary mechanism, and guiding the cooling water to a cooling tower of the data center for recycling.
2. The multifunctional cooling method integrating free cooling and heat recovery as claimed in claim 1, wherein the cooling conditions include seasonal information corresponding to the location of the data center, outdoor temperature; the method for acquiring the cooling condition of the data center and adjusting the refrigeration mode of the data center according to the cooling condition specifically comprises the following steps:
acquiring outdoor temperature, and judging whether the outdoor temperature reaches a free refrigeration condition;
when the free refrigeration condition cannot be met, adjusting the refrigeration mode of the data center to a mechanical refrigeration mode, and transferring heat from chilled water to cooling water by refrigerating waste heat generated by the data center through a cold water unit;
when the free refrigeration condition is met, the refrigeration mode of the data center is adjusted to the free refrigeration mode, waste heat generated by the data center is transferred from chilled water to cooling water through the plate heat exchanger, and a water chilling unit is not started;
when the free refrigeration condition is insufficient, adjusting the refrigeration mode of the data center to a mixed refrigeration mode, and judging whether the temperature of cooling water is lower than the temperature of chilled water: when the temperature of the cooling water is lower than the temperature of the chilled water, a mixed refrigeration mode is adopted, and the temperature of the discharged water is controlled by a chilled water unit after the cooling water and the chilled water enter a plate heat exchanger for heat exchange; and when the temperature of the cooling water is not lower than the temperature of the chilled water, adopting a mechanical refrigeration mode.
3. The multifunctional cooling method integrating free cooling and heat recovery according to claim 2, wherein obtaining the heat recovery efficiency of the cooling water of the data center in the current cooling mode specifically comprises:
acquiring a refrigeration mode used by a data center in a current time period;
respectively detecting the temperature difference of chilled water and cooling water before and after heat exchange, and calculating the heat energy recovery efficiency of the cooling water in the current refrigeration mode, wherein the heat energy recovery efficiency is used for reflecting the heat energy carrying capacity when the cooling water in the current refrigeration mode is discharged;
when the refrigeration mode is a free refrigeration mode, the heat energy recovery efficiency can reflect the real refrigeration effect, and the heat energy carrying amount when the cooling water is discharged is controlled by the plate-type exchanger;
when the refrigeration mode is a mechanical refrigeration mode, the heat energy recovery efficiency is controlled by a water chilling unit, and the heat energy carrying amount when cooling water is discharged is controlled by the water chilling unit;
when the refrigeration mode is a hybrid refrigeration mode, the heat energy recovery efficiency is controlled by the water chilling unit, and the heat energy carrying amount when the cooling water is discharged is controlled by the water chilling unit.
4. The multifunctional cooling method integrating free cooling and heat recovery as claimed in claim 3, wherein the heat energy carried by the cooling water when discharged is treated in a manner comprising:
when the auxiliary mechanism does not have the heat demand, the cooling water carrying the heat energy is guided into an outdoor cooling tower of the data center, and the heat energy is released into the atmosphere;
when the heat demand of the auxiliary mechanism exists, cooling water carrying heat energy is guided into a heat exchange pipeline of the auxiliary mechanism to carry out exchange type heat energy supply on the auxiliary mechanism, wherein the heat demand of the auxiliary mechanism comprises hot water supply and heating supply.
5. The multifunctional cooling method integrating free cooling and heat recovery as claimed in claim 4, wherein the step of invoking the current cooling water distribution to the responsive affiliate for switched thermal energy supply and synchronously adjusting the self-heating power of the responsive affiliate according to the thermal energy exchange efficiency comprises:
calling the current cooling water to guide the current cooling water into a heat exchange pipeline capable of responding to the affiliated mechanism, starting a heat energy exchanger capable of responding to the affiliated mechanism in the distribution list, and exchanging heat with the current cooling water carrying heat energy;
the water outlet temperature of the heat exchanger capable of responding to the auxiliary mechanism is detected, the self-heating power of the auxiliary mechanism is adjusted according to the temperature requirement capable of responding to the auxiliary mechanism, and the energy consumption is reduced.
6. The multifunctional cooling method integrating free cooling and heat recovery according to claim 1, wherein the cooling water exchanged with the responsive affiliates is recovered and guided to a cooling tower of the data center for recycling, and specifically comprises:
predefining a recovery temperature;
when the cooling water circulates back to the data center after the cooling water completes the heat energy exchange with the response attachment, whether the temperature of the circulating back cooling water is higher than the recovery temperature is detected:
if the temperature is higher than the recovery temperature, starting a water chiller to perform refrigeration compensation on the circulated cooling water, and then guiding the circulated cooling water to a cooling tower of the data center;
and if the temperature is not higher than the recovery temperature, directly guiding the cooling water circulated back to a cooling tower of the data center.
7. A multifunctional cooling system for free cooling and heat recovery, which is characterized in that the multifunctional cooling method for free cooling and heat recovery of claim 1 is applied, and the system specifically comprises:
a refrigeration control module: acquiring a cooling condition of the data center, adjusting a refrigeration mode of the data center according to the cooling condition, and acquiring the heat energy recovery efficiency of cooling water of the data center in the current refrigeration mode;
an energy supply request module: acquiring the heat demand of an auxiliary mechanism, calculating the available range of the heat carried by the current cooling water, and outputting a response auxiliary mechanism in the available range;
a demand response module: calling the current cooling water to be distributed to the responsive affiliates for exchange type heat energy supply, and synchronously adjusting the self-heating power of the responsive affiliates according to the heat energy exchange efficiency;
a recycling module: and recovering the cooling water exchanged with the heat energy of the response-capable auxiliary mechanism, and guiding the cooling water to a cooling tower of the data center for recycling.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program performs the steps of the method of any one of claims 1 to 6.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of a method for multi-functional cooling combining free cooling and heat recovery according to any one of claims 1 to 6.
CN202110445781.5A 2021-04-25 2021-04-25 Multifunctional cooling method and system integrating free cooling and heat recovery Active CN113175712B (en)

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