CN113133277A - Temperature control method and adjusting system of container data center - Google Patents
Temperature control method and adjusting system of container data center Download PDFInfo
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- CN113133277A CN113133277A CN202110264853.6A CN202110264853A CN113133277A CN 113133277 A CN113133277 A CN 113133277A CN 202110264853 A CN202110264853 A CN 202110264853A CN 113133277 A CN113133277 A CN 113133277A
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- 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
- H05K7/20718—Forced ventilation of a gaseous coolant
- H05K7/20736—Forced ventilation of a gaseous coolant within cabinets for removing heat from server blades
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- 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
- H05K7/20836—Thermal management, e.g. server temperature control
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- 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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a temperature control method and a regulating system of a container data center, which relate to the technical field of heat dissipation and comprise the following steps: and according to the conditions of the temperature inside and outside the container, dynamically selecting between a heat exchange temperature control mode, an air conditioner temperature control mode and a heat exchange temperature control and air conditioner temperature control mixed mode. And dynamically adjusting the rotating speed and/or the refrigerating capacity of the fan based on the return air temperature index and the temperature of the air inlet of the equipment in the container so as to be matched with the air quantity and/or the refrigerating capacity required by the equipment in the container. The invention can dynamically adjust the temperature control mode according to the actual situation, reduces the running time of the air conditioner compressor, achieves the purposes of energy saving and consumption reduction, can enable the output airflow to dynamically match the airflow required by the equipment, and can ensure the normal heat dissipation of the equipment.
Description
Technical Field
The invention relates to the technical field of heat dissipation, in particular to a temperature control method and a temperature regulating system of a container data center.
Background
The container data center is a data center product which is suitable for factory prefabrication, modular production, rapid deployment and centralized delivery, is suitable for being used in scenes such as no new machine room, field deployment and the like, and pays more and more attention to how to radiate heat of IT and CT equipment in the container data center.
In the prior art, one heat dissipation mode is realized by arranging an inter-train air conditioner inside a container data center, and the inter-train air conditioner has high power consumption and needs to consume a large amount of electric energy. According to statistics, the energy consumption of the refrigerating and air-conditioning equipment in the data center machine room accounts for about 40% of the total energy consumption. In order to adapt to the trend of green energy conservation of a data center, the energy consumption of the data center is reduced by using a natural condition of low outdoor air temperature at present, so that the aim of energy conservation can be achieved, and a brand new application field is opened up for the heat pipe technology.
However, in the existing compressor cooling mode and heat pipe mode, the same evaporator and condenser are used, and the indoor evaporator, the connecting pipeline and the outdoor condenser are closed pipelines filled with a certain volume of refrigerant medium. The structure needs to design a liquid storage tank on the pipeline, when the compressor works, the liquid storage tank stores a certain volume of refrigerant medium, and under the working mode of the heat pipe, the refrigerant in the liquid storage tank enters the pipeline again for circulation by opening the three-way valve. In the compressor cooling mode, a small amount of compressor refrigerant oil is mixed with the refrigerant medium to enter the circulation line and enter the condenser and the evaporator. The poor mobility of compressor refrigeration oil can influence refrigerant mobility to influence the heat transfer performance of evaporimeter and condenser, can not reach the heat transfer volume of design. The final refrigeration work is still finished by the intervention of the compressor, and the energy-saving effect is not obvious.
Disclosure of Invention
In view of the defects in the prior art, the first aspect of the present invention provides a temperature control method for a container data center, which can dynamically adjust a temperature control mode according to actual conditions, reduce the operation time of an air conditioner compressor, achieve the purposes of energy saving and consumption reduction, dynamically match the output airflow with the airflow required by equipment, and ensure normal heat dissipation of the equipment.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a method of temperature control in a container data center, the method comprising the steps of:
according to the internal and external temperature conditions of the container, dynamically selecting between a heat exchange temperature control mode, an air conditioner temperature control mode and a heat exchange temperature control and air conditioner temperature control mixed mode;
and dynamically adjusting the rotating speed and/or the refrigerating capacity of the fan based on the return air temperature index and the temperature of the air inlet of the equipment in the container so as to be matched with the air quantity and/or the refrigerating capacity required by the equipment in the container.
In some embodiments, the dynamically adjusting the rotating speed and/or the cooling capacity of the fan based on the return air temperature index and the air inlet temperature of the equipment in the container to match the air volume and the cooling capacity required by the equipment in the container includes:
dynamically adjusting the rotating speed of the inner fan based on the return air temperature index so as to control the speed of heat conducted to the heat exchange evaporator in the heat exchange temperature control mode and/or the speed of heat conducted to the air conditioner evaporator in the air conditioner temperature control mode;
based on the temperature of an air inlet of equipment in the container, the rotating speed of the outer fan is dynamically adjusted so as to control the speed of taking away the heat of the heat exchange condenser by the cold air outside the container in the heat exchange temperature control mode and/or the speed of taking away the heat of the air conditioner condenser in the air conditioner temperature control mode, and the compressor and the outer fan are adjusted in the same direction.
In some embodiments, dynamically adjusting the speed of the inner fan to control the rate at which heat is transferred to the heat-exchange evaporator in the heat-exchange temperature control mode and/or to the air-conditioning evaporator in the air-conditioning temperature control mode based on the return air temperature index comprises:
acquiring the temperature Ti of an equipment air inlet, the temperature To of an equipment air outlet, the channel return air temperature Tr and the channel supply air temperature Ts in the container;
calculating the actual return air temperature index: (Tr-Ts)/(To-Ti);
when (Tr-Ts)/(To-Ti) is larger than RTI1When the fan is started, the rotating speed of the inner fan is increased;
when (Tr-Ts)/(To-Ti) is less than RTI2When the fan is started, the rotating speed of the inner fan is reduced;
wherein, RTI1And RTI2Is a preset return air temperature index, and RTI1＞RTI2。
In some embodiments, the dynamically adjusting the rotation speed of the external fan based on the temperature of the air inlet of the equipment in the container to control the speed of taking away the heat of the heat exchange condenser by the cold air outside the container in the heat exchange temperature control mode and/or the speed of taking away the heat of the air conditioner condenser in the air conditioner temperature control mode, and enabling the compressor and the external fan to be adjusted in the same direction includes:
comparing the temperature Ti of the air inlet of the equipment with a preset allowable equipment temperature T1;
when Ti is less than T1-delta T, judging whether the compressor is started, wherein delta T is the reserved allowance temperature;
if the compressor is started, judging whether the compressor has the lowest output, closing the compressor when the compressor has the lowest output, and reducing the output of the compressor when the compressor has not the lowest output;
and if the compressor is closed, judging whether the outer fan is at the lowest rotating speed, keeping the rotating speed of the outer fan unchanged when the outer fan is at the lowest rotating speed, and reducing the rotating speed of the outer fan when the outer fan is not at the lowest rotating speed.
In some embodiments, the dynamically adjusting the rotation speed of the external fan based on the temperature of the air inlet of the equipment in the container to control the speed of taking away the heat of the heat exchange condenser by the cold air outside the container in the heat exchange temperature control mode and/or the speed of taking away the heat of the air conditioner condenser in the air conditioner temperature control mode, and enabling the compressor and the external fan to be adjusted in the same direction includes:
comparing the temperature Ti of the air inlet of the equipment with a preset allowable equipment temperature T1;
when Ti is more than T1-delta T, judging whether the outer fan is at the highest rotating speed;
if the outer fan is not at the highest rotating speed, increasing the rotating speed of the outer fan;
if the outer fan is at the highest rotating speed, whether the compressor is started or not is judged, when the compressor is not started, the compressor is started and set to be at the lowest output, and when the compressor is started, the output of the compressor is increased.
In some embodiments, the dynamically selecting between the heat exchange temperature control mode, the air conditioner temperature control mode, and the heat exchange temperature control and air conditioner temperature control hybrid mode according to the temperature conditions inside and outside the container includes:
collecting the ambient temperature Ta outside the container and the return air temperature Tr of a channel in the container, and calculating the temperature T' of a heat exchange threshold in the container;
judging a corresponding temperature control mode according to the size relationship among Ta, Tr and T';
when Ta is larger than Tr, selecting an air conditioner temperature control mode;
when Tr is more than Ta and is more than T', selecting a heat exchange temperature control and air conditioner temperature control mixed mode;
when Ta < T', the heat exchange temperature control mode is selected.
The second aspect of the invention provides a temperature control and regulation system for a container data center, which can dynamically adjust a temperature control mode according to actual conditions, reduce the running time of an air conditioner compressor, achieve the purposes of energy saving and consumption reduction, dynamically match the output airflow with the airflow required by equipment, and ensure the normal heat dissipation of the equipment.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a temperature control and regulation system for a container data center, comprising:
a heat exchange temperature control subsystem for controlling the temperature in the container in a heat exchange temperature control mode;
the air-conditioning temperature control subsystem controls the temperature in the container in an air-conditioning temperature control mode;
and the controller is connected with the heat exchange temperature control subsystem and the air conditioner temperature control subsystem and dynamically selects between a heat exchange temperature control mode, an air conditioner temperature control mode and a heat exchange temperature control and air conditioner temperature control mixed mode according to the temperature conditions inside and outside the container, and dynamically adjusts the rotating speed and/or the refrigerating capacity of the fan on the basis of the return air temperature index and the temperature of an air inlet of equipment in the container so as to be matched with the air quantity and the refrigerating capacity required by the equipment in the container.
In some embodiments, the temperature control and regulation system further comprises an inner fan and an outer fan;
the heat exchange temperature control subsystem comprises a heat exchange evaporator and a heat exchange condenser;
the air-conditioning temperature control subsystem comprises an air-conditioning evaporator, an air-conditioning condenser and a compressor;
the controller dynamically adjusts the rotating speed of the inner fan based on the return air temperature index so as to control the speed of heat conducted to the heat exchange evaporator in the heat exchange temperature control mode and/or the speed of heat conducted to the air conditioner evaporator in the air conditioner temperature control mode;
and dynamically adjusting the rotating speed of the outer fan based on the temperature of the air inlet of the equipment in the container so as to control the speed of taking away the heat of the heat exchange condenser by the cold air outside the container in the heat exchange temperature control mode and/or the speed of taking away the heat of the air conditioner condenser in the air conditioner temperature control mode, and enabling the compressor and the outer fan to be adjusted in the same direction.
In some embodiments, the controller is to:
acquiring the temperature Ti of an equipment air inlet, the temperature To of an equipment air outlet, the channel return air temperature Tr and the channel supply air temperature Ts in the container;
calculating the return air temperature index: (Tr-Ts)/(To-Ti);
when (Tr-Ts)/(To-Ti) is larger than RTI1When the fan is started, the rotating speed of the inner fan is increased;
when (Tr-Ts)/(To-Ti) is less than RTI2When the fan is started, the rotating speed of the inner fan is reduced;
wherein, RTI1And RTI2Is a preset return air temperature index, and RTI1＞RTI2。
In some embodiments, the controller is further configured to:
comparing the temperature Ti of the air inlet of the equipment with a preset allowable equipment temperature T1;
when Ti is less than T1-delta T, judging whether the compressor is started, wherein delta T is the reserved allowance temperature;
if the compressor is started, judging whether the compressor has the lowest output, closing the compressor when the compressor has the lowest output, and reducing the output of the compressor when the compressor has not the lowest output;
if the compressor is closed, judging whether the outer fan is in the lowest rotating speed, keeping the rotating speed of the outer fan unchanged when the outer fan is in the lowest rotating speed, and reducing the rotating speed of the outer fan when the outer fan is not in the lowest rotating speed;
when Ti is more than T1-delta T, judging whether the outer fan is at the highest rotating speed;
if the outer fan is not at the highest rotating speed, increasing the rotating speed of the outer fan;
if the outer fan is at the highest rotating speed, whether the compressor is started or not is judged, when the compressor is not started, the compressor is started and set to be at the lowest output, and when the compressor is started, the output of the compressor is increased.
Compared with the prior art, the invention has the advantages that:
according to the temperature control method of the container data center, the refrigeration cycle of the air conditioner compressor and the heat exchange natural cycle are organically combined according to the dynamic changes of the ambient temperature outside the container, the air supply temperature of the channel and the heat exchange threshold temperature, the heat exchange temperature control mode, the air conditioner temperature control mode and the heat exchange temperature control and air conditioner temperature control mixed mode are adopted for dynamic operation, the operation time of the air conditioner compressor is reduced under the condition of long heat exchange operation time, and the purposes of saving energy and reducing consumption can be achieved. Simultaneously, still based on return air temperature index and the interior equipment air intake temperature of container, dynamic adjustment fan rotational speed and/or refrigerating output can let output airflow dynamic match equipment demand airflow, and the fan operating efficiency is high, can ensure that equipment normally dispels the heat.
Drawings
FIG. 1 is a flow chart of a method for temperature control in a container data center according to an embodiment of the present invention;
FIG. 2 is a flowchart of step S1 in FIG. 1;
FIG. 3 is a flowchart of step S2 in FIG. 1;
FIG. 4 is a flowchart of steps S21 and S22 of FIG. 3;
FIG. 5 is a front view of a temperature control conditioning system layout for a container data center;
FIG. 6 is a top view of a temperature control and conditioning system layout for a container data center;
FIG. 7 is a schematic diagram of the operation of the temperature control and regulation system of the container data center;
fig. 8 is a block diagram showing the structure of a temperature control and regulation system of a container data center.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, an embodiment of the present invention provides a method for controlling temperature of a container data center, where the method includes the following steps:
s1, according to the temperature conditions inside and outside the container, dynamic selection is carried out among a heat exchange temperature control mode, an air conditioner temperature control mode and a heat exchange temperature control and air conditioner temperature control mixed mode.
It should be noted that, a plurality of devices are usually disposed in the container, and these devices generate a large amount of heat during operation, in this embodiment, two subsystems for dissipating heat for the devices are mainly provided, one is a heat exchange temperature control subsystem, which includes a heat exchange evaporator and a heat exchange condenser, and controls the temperature in the container through a heat exchange temperature control mode. The other is an air-conditioning temperature control subsystem which comprises an air-conditioning evaporator, an air-conditioning condenser and a compressor and controls the temperature in the container through an air-conditioning temperature control mode. In the embodiment, the heat exchange temperature control mode, the air conditioner temperature control mode and the heat exchange temperature control and air conditioner temperature control mixed mode can be dynamically switched according to the temperature conditions inside and outside the container, so that the heat dissipation requirement can be met, the running time of the air conditioner temperature control subsystem is reduced as much as possible, and the purposes of energy conservation and consumption reduction can be achieved.
As a preferred embodiment, referring to fig. 2, step S1 specifically includes:
s11, collecting the ambient temperature Ta outside the container and the return air temperature Tr of a channel in the container, and calculating the temperature T' of the heat exchange threshold in the container.
It is understood that the passageway refers to a closed and isolated hot passageway and a cold passageway respectively disposed on both sides of the equipment in the container.
In this embodiment, the magnitude of the heat exchange threshold temperature T' depends on the heat exchange capacity of the heat exchange and the equipment load condition in the container.
The specific calculation process is as follows:
and acquiring the total power Q of equipment in the container, calculating the channel temperature variation Q/H according to Q and the heat exchange coefficient H of heat exchange, and calculating the heat exchange threshold temperature T' ═ Tr-Q/H in the container based on the channel return air temperature Tr.
S12, judging the temperature control mode to be selected according to the mutual size relationship among Ta, Tr and T'.
And S13, when Ta is larger than Tr, selecting an air conditioner temperature control mode.
S14, when Tr is larger than Ta and larger than T', a heat exchange temperature control and air conditioner temperature control mixed mode is selected.
S15, when Ta is less than T', a heat exchange temperature control mode is selected.
And S2, dynamically adjusting the rotating speed and/or the refrigerating capacity of the fan based on the return air temperature index and the temperature of the air inlet of the equipment in the container so as to be matched with the air quantity and/or the refrigerating capacity required by the equipment in the container.
It can be understood that, based on return air temperature index and equipment air intake temperature in the container, dynamic adjustment fan rotational speed and/or refrigeration volume in this embodiment can let output gas flow dynamic match equipment demand airflow, and fan operating efficiency is high, can ensure that equipment normally dispels the heat.
As a preferred embodiment, referring to fig. 3, step S2 specifically includes:
and S21, dynamically adjusting the rotating speed of the inner fan based on the return air temperature index so as to control the speed of heat conducted to the heat exchange evaporator in the heat exchange temperature control mode and/or the speed of heat conducted to the air conditioner evaporator in the air conditioner temperature control mode.
Referring to fig. 4, the following describes a specific example of the control process of the internal fan speed:
s2101, collecting the temperature Ti of an air inlet of equipment, the temperature To of an air outlet of the equipment, the return air temperature Tr of a channel and the air supply temperature Ts of the channel in a container.
S2102, calculating an actual return air temperature index: (Tr-Ts)/(To-Ti).
S2103, when (Tr-Ts)/(To-Ti) is larger than RTI1And increasing the rotating speed of the inner fan.
Specifically, the method can be realized by increasing the rotation speed of the inner fan by one gear.
S2104, when (Tr-Ts)/(To-Ti) is less than RTI2And when the fan is in use, the rotating speed of the inner fan is reduced.
Specifically, this can be achieved by reducing the inner fan speed by one gear.
Wherein, RTI1(Return temp. index) and RTI2Is a preset return air temperature index, and RTI1＞RTI2As a preferred embodiment, for example, RTI may be provided1To 1, RTI is set2Is 0.9, it is worth mentioning that RTI1And RTI2The setting can be reasonable according to the actual situation, that is, the two can fluctuate around 1 and 0.9, respectively, which is not limited by the embodiment.
Therefore, through the steps, the rotating speed of the internal fan can be dynamically adjusted according to the return air temperature index, so that the rotating speed of the internal fan is matched with the air quantity required by equipment in the container.
S22, dynamically adjusting the rotating speed of the outer fan based on the temperature of the air inlet of the equipment in the container to control the speed of taking away the heat of the heat exchange condenser of the cold air outside the container in a heat exchange temperature control mode and/or the speed of taking away the heat of the air conditioner condenser in an air conditioner temperature control mode, and enabling the compressor and the outer fan to be adjusted in the same direction.
It should be noted that the co-directional adjustment of the compressor and the external fan means that when the rotation speed of the external fan needs to be increased, the output of the compressor is simultaneously increased, and when the rotation speed of the external fan needs to be decreased, the output of the compressor is simultaneously decreased.
Referring to fig. 4, after the temperature Ti of the air inlet of the equipment in the container is collected, the following describes a specific example of the control process of the rotating speed of the external fan and the compressor:
s2105, comparing the temperature Ti of the air inlet of the equipment with the preset allowable temperature T1 of the equipment, executing a step S2106 when Ti is less than T1-delta T, and executing a step S2113 when Ti is more than T1-delta T, wherein delta T is the reserved allowance temperature.
S2106, judging whether the compressor is started or not, if the compressor is started, executing step S2107, and if the compressor is closed, executing step S2110.
S2107, judging whether the compressor has the lowest output, executing step S2108 when the compressor has the lowest output, and executing step S2109 when the compressor does not have the lowest output.
S2108, the compressor is closed.
S2109, reducing the output of the compressor.
Specifically, this may be accomplished by downshifting the compressor output.
And S2110, judging whether the outer fan is in the lowest rotation speed, executing the step S2111 when the outer fan is in the lowest rotation speed, and executing the step S2112 when the outer fan is not in the lowest rotation speed.
S2111, keeping the rotating speed of the outer fan unchanged.
And S2112, reducing the rotating speed of the outer fan.
Specifically, this may be accomplished by downshifting the speed of the outer fan.
And S2113, judging whether the outer fan is at the highest rotating speed, if not, executing the step S2114, and if so, executing the step S2115.
And S2114, increasing the rotating speed of the outer fan.
Specifically, this may be accomplished by shifting up the speed of the external fan by one.
S2115, judging whether the compressor is started, executing the step S2116 when the compressor is not started, and executing the step S2117 when the compressor is started.
S2116, starting the compressor and setting the lowest output.
Specifically, this can be achieved by letting the compressor output at the lowest gear.
S2117, increasing the output of the compressor.
Specifically, this can be achieved by upshifting the compressor output.
Therefore, through the steps, the rotating speed of the external fan and the output of the compressor can be dynamically adjusted according to the temperature of the air inlet of the equipment, so that the rotating speed of the external fan and the output of the compressor are matched with the air quantity and the refrigerating capacity required by the equipment in the container.
In summary, according to the temperature control method of the container data center, the refrigeration cycle of the air conditioner compressor and the heat exchange natural cycle are organically combined according to the dynamic changes of the ambient temperature outside the container, the air supply temperature of the channel and the heat exchange threshold temperature, the three modes of the heat exchange temperature control mode, the air conditioner temperature control mode and the heat exchange temperature control and air conditioner temperature control mixed mode are adopted for dynamic operation, the operation time of the air conditioner compressor is reduced under the condition of long operation time of the heat exchange, and the purposes of saving energy and reducing consumption can be achieved. Simultaneously, still based on return air temperature index and the interior equipment air intake temperature of container, dynamic adjustment fan rotational speed and/or refrigerating output can let output airflow dynamic match equipment demand airflow, and the fan operating efficiency is high, can ensure that equipment normally dispels the heat.
Correspondingly, the embodiment of the invention also provides a temperature control and regulation system of the container data center, which comprises a heat exchange temperature control subsystem, an air conditioner temperature control subsystem and a controller.
Wherein, the heat exchange temperature control subsystem controls the temperature in the container through a heat exchange temperature control mode. The air-conditioning temperature control subsystem controls the temperature in the container through an air-conditioning temperature control mode. The controller is connected with the heat exchange temperature control subsystem and the air conditioner temperature control subsystem and dynamically selects between a heat exchange temperature control mode, an air conditioner temperature control mode and a heat exchange temperature control and air conditioner temperature control mixed mode according to the temperature conditions inside and outside the container, and the rotating speed and/or the refrigerating capacity of the fan are/is dynamically adjusted on the basis of the return air temperature index and the temperature of the air inlet of equipment in the container so as to be matched with the air quantity and the refrigerating capacity required by the equipment in the container.
Specifically, referring to fig. 5-7, in some embodiments, the temperature control and regulation system further includes an inner fan and an outer fan. The heat exchange temperature control subsystem comprises a heat exchange evaporator and a heat exchange condenser. The air-conditioning temperature control subsystem comprises an air-conditioning evaporator, an air-conditioning condenser and a compressor.
The air-conditioning temperature control subsystem and the heat exchange temperature control subsystem in the embodiment form a loop respectively, and mainly comprise two sets of evaporators, two sets of condensers, and gravity heat pipes and accessories which are connected respectively. One loop is used for heat exchange and heat exchange, the other loop is used for air-conditioning refrigeration, and the two loops are independent respectively. The air-conditioning temperature control subsystem mainly comprises an air-conditioning condenser, an air-conditioning evaporator, a compressor and two gravity heat pipes for circulating a gaseous refrigerant and a liquid refrigerant. The heat exchange temperature control subsystem mainly comprises a heat exchange condenser, a heat exchange evaporator and two gravity heat pipes for circulating gaseous refrigerants and liquid refrigerants.
The heat exchange mode is that the heat exchange evaporator is connected to the lower part of the heat exchange condenser through one gravity heat pipe, and then the lower part of the heat exchange condenser is connected to the heat exchange evaporator through the other gravity heat pipe to form a closed loop. The closed loop is filled with refrigerant medium with certain volume, the refrigerant medium absorbs heat in the heat exchange evaporator and then is gasified and naturally ascends, the refrigerant medium enters the heat exchange condenser through the gravity heat pipe at the upper part, is cooled in the heat exchange condenser to be liquid, naturally flows back into the heat exchange evaporator through the gravity heat pipe at the lower part, and the indoor heat is taken out of the room in a circulating manner. When a heat exchange mode is adopted, the whole heat exchange process does not need a compressor, the gravity heat pipe is not internally provided with compressor refrigeration oil, the refrigerant medium can fully exchange heat, and the fluidity is not influenced, so that the maximized heat exchange efficiency is achieved.
The working principle of temperature regulation of the air-conditioning temperature control subsystem is explained as follows:
under the action of an inner fan, hot air from equipment in the container continuously passes through the surface of the air conditioner evaporator to conduct heat to the air conditioner evaporator, a refrigerant working medium absorbs heat in the air conditioner evaporator to form saturated steam, the saturated steam enters the compressor through a low-pressure pipeline, high-temperature and high-pressure gas is formed under the mechanical compression of the compressor and enters the air conditioner condenser, outdoor cold air passes through the surface of the air conditioner condenser under the action of an outer fan to take away heat, the refrigerant working medium is cooled into a liquid state and enters the air conditioner evaporator, the liquid state is evaporated into a gas state to absorb heat, and the circulation is repeated in the above way, so that the indoor heat is taken out of the room, and the indoor refrigeration is realized.
The temperature regulation working principle of the heat exchange temperature control subsystem is explained as follows:
the equipment generates heat and conducts the heat to the air in the container, the air temperature in the container is higher, under the action of the internal fan, hot air continuously passes through the surface of the heat exchange evaporator, the heat is conducted to the heat exchange evaporator, the refrigerant working medium absorbs the heat in the heat exchange evaporator and is gasified, the formed saturated steam has upward pressure, the saturated steam enters the heat exchange condenser through the gravity heat pipe, under the action of the external fan, outdoor cold air passes through the surface of the heat exchange condenser to take away the heat, the refrigerant working medium releases the heat and is cooled into a liquid state, the liquid refrigerant working medium flows downwards under the action of the gravity and flows back into the heat exchange evaporator to absorb the heat again and is gasified, the circulation is repeated, the heat of the equipment in the container is taken to the outside, and the refrigeration is carried out in the.
In the above-described apparatus, the external fan, the air conditioning condenser, and the heat exchange condenser are outdoor devices, and are disposed at an upper portion of the container. The inner fan, the air-conditioning evaporator, the heat exchange evaporator, the compressor and the controller belong to an indoor side device and are arranged at the lower part of the container. The air conditioner condenser and the heat exchange condenser are arranged side by side, and in order to increase the heat exchange area, the air conditioner condenser and the heat exchange condenser are not limited to the '/' shape mode adopted in the embodiment, and can also be arranged in a V-shaped mode, an A-shaped mode and the like. The two sides of the equipment in the container are respectively provided with a closed hot channel and a closed cold channel which are mutually isolated.
The temperature control and regulation system of the container data center in this embodiment can be seen from fig. 8, and the controller can switch the working modes of the air temperature control subsystem and the heat exchange temperature control subsystem through the electromagnetic valve. Through the frequency converter, the controller can start and stop control and adjustment of different gears to compressor, outer fan and interior fan. The outdoor environment temperature sensor is used for measuring the outdoor environment temperature of the container, the channel air supply temperature sensor is used for measuring the air supply temperature of the channel, the channel air return temperature sensor is used for measuring the air return temperature of the channel, the equipment air inlet temperature sensor is used for measuring the temperature of the air inlet of the equipment in the container, and the equipment air outlet temperature sensor is used for measuring the temperature of the air outlet of the equipment in the container. The display is connected with the controller through a power line and a signal line, communicates through a communication protocol, can display information such as equipment states, parameter good environment temperature and the like, can also set starting, stopping, various parameters and the like through keys, feeds back set parameter information to the controller, and performs logic operation execution instructions. The upper monitoring center is used for data interaction with the controller through an RS232/RS485 communication interface, and functions of remote measurement (temperature inside and outside the box), remote signaling (running states of the internal and external fans, running states of the compressor, alarm information and the like), remote control (starting and stopping of the internal and external fans, starting and stopping of the compressor, modification of various system parameters and the like) and the like are achieved.
Based on the above description, the following description will be made of the processing flow of the temperature control and regulation system of the container data center:
firstly, according to the temperature conditions inside and outside the container, the dynamic selection is carried out among a heat exchange temperature control mode, an air conditioner temperature control mode and a heat exchange temperature control and air conditioner temperature control mixed mode. Specifically, the controller measures the container outside ambient temperature Ta via an outside-box ambient temperature sensor, and measures the tunnel return air temperature Tr via a tunnel supply air temperature sensor.
And then calculating the temperature T 'of the heat exchange threshold in the container, and judging the temperature control mode to be selected according to the size relationship among Ta, Tr and T'. Specifically, when Ta > Tr, the air-conditioning temperature control mode is selected. When Tr is more than Ta and is more than T', a heat exchange temperature control and air conditioner temperature control mixed mode is selected. When Ta < T', the heat exchange temperature control mode is selected.
The magnitude of the heat exchange threshold temperature T' depends on the heat exchange capacity of the heat exchange and the equipment load condition in the container. The specific calculation process is as follows:
and acquiring the total power Q of equipment in the container, calculating the channel temperature variation Q/H according to Q and the heat exchange coefficient H of heat exchange, and calculating the heat exchange threshold temperature T' in the container as Tr-Q/H based on the channel air supply temperature Tr.
The controller in this embodiment dynamically adjusts the speed of the inner fan based on the return air temperature index to control the speed at which heat is transferred to the heat exchange evaporator in the heat exchange temperature control mode and/or the speed at which heat is transferred to the air conditioning evaporator in the air conditioning temperature control mode.
And dynamically adjusting the rotating speed of the outer fan based on the temperature of the air inlet of the equipment in the container so as to control the speed of taking away the heat of the heat exchange condenser by the cold air outside the container in the heat exchange temperature control mode and/or the speed of taking away the heat of the air conditioner condenser in the air conditioner temperature control mode, and enabling the compressor and the outer fan to be adjusted in the same direction.
Specifically, the controller firstly measures a channel return air temperature Tr through a channel return air temperature sensor, measures a channel supply air temperature Ts through a channel supply air temperature sensor, measures an equipment air inlet temperature Ti through an equipment air inlet temperature sensor, and measures an equipment air outlet temperature To in the box through an equipment air outlet temperature sensor.
Then calculating the actual return air temperature index: (Tr-Ts)/(To-Ti), when (Tr-Ts)/(To-Ti) is greater than RTI1When the rotation speed of the inner fan is increased, when the (Tr-Ts)/(To-Ti) is less than RTI2And when the fan is in use, the rotating speed of the inner fan is reduced. Wherein, RTI1And RTI2Is a preset return air temperature index, and RTI1＞RTI2As a preferred embodiment, for example, RTI may be provided1To 1, RTI is set2Is 0.9, it is worth mentioning that RTI1And RTI2The setting can be reasonable according to the actual situation, that is, the two can fluctuate around 1 and 0.9, respectively, which is not limited by the embodiment.
Therefore, the rotating speed of the internal fan can be dynamically adjusted according to the return air temperature index so as to be matched with the air quantity required by equipment in the container.
In addition, the controller is also used for comparing the equipment air inlet temperature Ti with the preset equipment allowable temperature T1.
Specifically, when Ti is less than T1-delta T, whether the compressor is started or not is judged, wherein delta T is the reserved allowance temperature. If the compressor is started, judging whether the compressor has the lowest output, closing the compressor when the compressor has the lowest output, and reducing the output of the compressor when the compressor has not the lowest output. And if the compressor is closed, judging whether the outer fan is at the lowest rotating speed, keeping the rotating speed of the outer fan unchanged when the outer fan is at the lowest rotating speed, and reducing the rotating speed of the outer fan when the outer fan is not at the lowest rotating speed.
And when Ti is more than T1-delta T, judging whether the outer fan is at the highest rotating speed or not. And if the outer fan is not at the highest rotating speed, increasing the rotating speed of the outer fan. If the outer fan is at the highest rotating speed, whether the compressor is started or not is judged, when the compressor is not started, the compressor is started and set to be at the lowest output, and when the compressor is started, the output of the compressor is increased.
Therefore, the rotating speed of the external fan and the output of the compressor can be dynamically adjusted according to the temperature of the air inlet of the equipment, so that the air quantity and the refrigerating capacity required by the equipment in the container are matched.
In summary, the temperature control and adjustment system of the container data center in the invention realizes the organic combination of the refrigeration cycle and the heat exchange natural cycle of the air conditioner compressor according to the dynamic changes of the external environment temperature of the container, the air supply temperature of the channel and the heat exchange threshold temperature, and dynamically operates in the three modes of the heat exchange temperature control mode, the air conditioner temperature control mode and the heat exchange temperature control and air conditioner temperature control mixed mode, so that the operation time of the air conditioner compressor is reduced under the condition of long operation time of the heat exchange, and the purposes of saving energy and reducing consumption can be achieved. Simultaneously, still based on return air temperature index and the interior equipment air intake temperature of container, dynamic adjustment fan rotational speed and/or refrigerating output can let output airflow dynamic match equipment demand airflow, and the fan operating efficiency is high, can ensure that equipment normally dispels the heat.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. A method for controlling temperature in a container data center, the method comprising the steps of:
according to the internal and external temperature conditions of the container, dynamically selecting between a heat exchange temperature control mode, an air conditioner temperature control mode and a heat exchange temperature control and air conditioner temperature control mixed mode;
and dynamically adjusting the rotating speed and/or the refrigerating capacity of the fan based on the return air temperature index and the temperature of the air inlet of the equipment in the container so as to be matched with the air quantity and/or the refrigerating capacity required by the equipment in the container.
2. The method as claimed in claim 1, wherein the dynamically adjusting the fan speed and/or the cooling capacity to match the air volume and the cooling capacity required by the equipment in the container based on the return air temperature index and the air inlet temperature of the equipment in the container comprises:
dynamically adjusting the rotating speed of the inner fan based on the return air temperature index so as to control the speed of heat conducted to the heat exchange evaporator in the heat exchange temperature control mode and/or the speed of heat conducted to the air conditioner evaporator in the air conditioner temperature control mode;
based on the temperature of an air inlet of equipment in the container, the rotating speed of the outer fan is dynamically adjusted so as to control the speed of taking away the heat of the heat exchange condenser by the cold air outside the container in the heat exchange temperature control mode and/or the speed of taking away the heat of the air conditioner condenser in the air conditioner temperature control mode, and the compressor and the outer fan are adjusted in the same direction.
3. The method of claim 2, wherein the dynamically adjusting the speed of the inner fan to control the rate of heat transfer to the heat-exchange evaporator in the heat-exchange temperature control mode and/or to the air-conditioning evaporator in the air-conditioning temperature control mode based on the return air temperature index comprises:
acquiring the temperature Ti of an equipment air inlet, the temperature To of an equipment air outlet, the channel return air temperature Tr and the channel supply air temperature Ts in the container;
calculating the actual return air temperature index: (Tr-Ts)/(To-Ti);
when (Tr-Ts)/(To-Ti) is larger than RTI1When the fan is started, the rotating speed of the inner fan is increased;
when (Tr-Ts)/(To-Ti) is less than RTI2When the fan is started, the rotating speed of the inner fan is reduced;
wherein, RTI1And RTI2Is a preset return air temperature index, and RTI1＞RTI2。
4. The method as claimed in claim 3, wherein the dynamically adjusting the rotation speed of the external air blower based on the temperature of the air inlet of the equipment in the container to control the speed of the cold air outside the container to take away the heat of the heat exchange condenser in the heat exchange temperature control mode and/or the speed of the air conditioner condenser in the air conditioner temperature control mode, and the compressor and the external air blower are adjusted in the same direction, comprises:
comparing the temperature Ti of the air inlet of the equipment with a preset allowable equipment temperature T1;
when Ti is less than T1-delta T, judging whether the compressor is started, wherein delta T is the reserved allowance temperature;
if the compressor is started, judging whether the compressor has the lowest output, closing the compressor when the compressor has the lowest output, and reducing the output of the compressor when the compressor has not the lowest output;
and if the compressor is closed, judging whether the outer fan is at the lowest rotating speed, keeping the rotating speed of the outer fan unchanged when the outer fan is at the lowest rotating speed, and reducing the rotating speed of the outer fan when the outer fan is not at the lowest rotating speed.
5. The method as claimed in claim 3 or 4, wherein the dynamically adjusting the rotation speed of the external air blower based on the temperature of the air inlet of the equipment in the container to control the speed of the cold air outside the container to take away the heat of the heat exchange condenser in the heat exchange temperature control mode and/or the speed of the air conditioner condenser in the air conditioner temperature control mode, and the compressor and the external air blower are adjusted in the same direction, comprises:
comparing the temperature Ti of the air inlet of the equipment with a preset allowable equipment temperature T1;
when Ti is more than T1-delta T, judging whether the outer fan is at the highest rotating speed;
if the outer fan is not at the highest rotating speed, increasing the rotating speed of the outer fan;
if the outer fan is at the highest rotating speed, whether the compressor is started or not is judged, when the compressor is not started, the compressor is started and set to be at the lowest output, and when the compressor is started, the output of the compressor is increased.
6. The method as claimed in claim 1, wherein the dynamically selecting between the heat exchange temperature control mode, the air conditioning temperature control mode and the heat exchange temperature control and air conditioning temperature control hybrid mode according to the temperature inside and outside the container comprises:
collecting the ambient temperature Ta outside the container and the return air temperature Tr of a channel in the container, and calculating the temperature T' of a heat exchange threshold in the container;
judging a corresponding temperature control mode according to the size relationship among Ta, Tr and T';
when Ta is larger than Tr, selecting an air conditioner temperature control mode;
when Tr is more than Ta and is more than T', selecting a heat exchange temperature control and air conditioner temperature control mixed mode;
when Ta < T', the heat exchange temperature control mode is selected.
7. A temperature control and regulation system for a container data center, comprising:
a heat exchange temperature control subsystem for controlling the temperature in the container in a heat exchange temperature control mode;
the air-conditioning temperature control subsystem controls the temperature in the container in an air-conditioning temperature control mode;
and the controller is connected with the heat exchange temperature control subsystem and the air conditioner temperature control subsystem and dynamically selects between a heat exchange temperature control mode, an air conditioner temperature control mode and a heat exchange temperature control and air conditioner temperature control mixed mode according to the temperature conditions inside and outside the container, and dynamically adjusts the rotating speed and/or the refrigerating capacity of the fan on the basis of the return air temperature index and the temperature of an air inlet of equipment in the container so as to be matched with the air quantity and the refrigerating capacity required by the equipment in the container.
8. A temperature control and regulation system for a container data center as claimed in claim 7, wherein:
the temperature control and regulation system also comprises an inner fan and an outer fan;
the heat exchange temperature control subsystem comprises a heat exchange evaporator and a heat exchange condenser;
the air-conditioning temperature control subsystem comprises an air-conditioning evaporator, an air-conditioning condenser and a compressor;
the controller dynamically adjusts the rotating speed of the inner fan based on the return air temperature index so as to control the speed of heat conducted to the heat exchange evaporator in the heat exchange temperature control mode and/or the speed of heat conducted to the air conditioner evaporator in the air conditioner temperature control mode;
and dynamically adjusting the rotating speed of the outer fan based on the temperature of the air inlet of the equipment in the container so as to control the speed of taking away the heat of the heat exchange condenser by the cold air outside the container in the heat exchange temperature control mode and/or the speed of taking away the heat of the air conditioner condenser in the air conditioner temperature control mode, and enabling the compressor and the outer fan to be adjusted in the same direction.
9. A temperature control and regulation system for a container data center as claimed in claim 8, wherein: the controller is configured to:
acquiring the temperature Ti of an equipment air inlet, the temperature To of an equipment air outlet, the channel return air temperature Tr and the channel supply air temperature Ts in the container;
calculating the return air temperature index: (Tr-Ts)/(To-Ti);
when (Tr-Ts)/(To-Ti) is larger than RTI1When the fan is started, the rotating speed of the inner fan is increased;
when (Tr-Ts)/(To-Ti) is less than RTI2When the fan is started, the rotating speed of the inner fan is reduced;
wherein, RTI1And RTI2Is a preset return air temperature index, and RTI1＞RTI2。
10. The system as claimed in claim 9, wherein the controller is further configured to:
comparing the temperature Ti of the air inlet of the equipment with a preset allowable equipment temperature T1;
when Ti is less than T1-delta T, judging whether the compressor is started, wherein delta T is the reserved allowance temperature;
if the compressor is started, judging whether the compressor has the lowest output, closing the compressor when the compressor has the lowest output, and reducing the output of the compressor when the compressor has not the lowest output;
if the compressor is closed, judging whether the outer fan is in the lowest rotating speed, keeping the rotating speed of the outer fan unchanged when the outer fan is in the lowest rotating speed, and reducing the rotating speed of the outer fan when the outer fan is not in the lowest rotating speed;
when Ti is more than T1-delta T, judging whether the outer fan is at the highest rotating speed;
if the outer fan is not at the highest rotating speed, increasing the rotating speed of the outer fan;
if the outer fan is at the highest rotating speed, whether the compressor is started or not is judged, when the compressor is not started, the compressor is started and set to be at the lowest output, and when the compressor is started, the output of the compressor is increased.
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