CN111918523B - Refrigerating system, control method and equipment of refrigerating system and storage medium - Google Patents
Refrigerating system, control method and equipment of refrigerating system and storage medium Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000005057 refrigeration Methods 0.000 claims abstract description 370
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- 238000009825 accumulation Methods 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims description 27
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 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
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- 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
- H05K7/208—Liquid cooling with phase change
- H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
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Abstract
The application discloses a refrigeration system, a control method, equipment and a storage medium of the refrigeration system, relates to the field of refrigeration equipment, and particularly relates to refrigeration equipment which can be used for a data center, wherein the data center can be used for application scenes including but not limited to cloud computing, cloud platforms, cloud services, cloud storage, deep learning, big data, neural networks and the like. The specific scheme is as follows: the refrigerating system is provided with at least two sets of refrigerating units, each refrigerating unit comprises a refrigerating machine and a plate heat exchanger which are connected in series, and whether the refrigerating machine and/or the plate heat exchanger of each refrigerating unit work or not is controlled according to the cold energy demand of the end load so as to provide cold water with required temperature for the cold storage tank and the end load, thereby meeting the cold energy demand of the end load and simultaneously realizing energy saving; the refrigerating system can stably run, the cold accumulation tank stably charges and discharges cold, and the phenomenon of surging and the like of the refrigerating machine can not occur; the method has the advantages of low cost, convenient implementation and maintenance, suitability for refrigerating scenes such as a data center and the like, and contribution to reducing the energy efficiency index PUE of the data center.
Description
Technical Field
The embodiment of the application relates to the field of refrigeration equipment, in particular to a refrigeration system, a control method, equipment and a storage medium of the refrigeration system, which can be used for refrigeration of a data center, wherein the data center can be used for application scenes including but not limited to cloud computing, cloud platforms, cloud services, cloud storage, deep learning, big data, neural networks and the like.
Background
With the development of new infrastructure, the data center plays an increasingly important role, and the water system cooling mode occupies a very high proportion in the data center, so that the energy-saving effect of the water system cooling mode is very obvious especially for large and medium-sized data centers.
The existing refrigeration mode of the water system generally adopts a certain fixed refrigeration mode such as freerefrigeration, refrigerator and plate exchanger mixed refrigeration, refrigerator refrigeration and the like, and can stably provide cold water with a certain constant temperature for cooling the end load of a data center such as an air conditioner and the like.
And because the data center needs different cold energy demands when operating under different load states, for example, the cold energy demand of the end load is higher when the data center is in high-load operation, and the cold energy demand of the end load is lower when the data center is in low-load operation, and the refrigerating system still needs to keep lower water outlet temperature in order to avoid the problem of surging or stopping, the different cold energy demands of the end load cannot be dealt with, and great energy waste exists under the condition that the cold energy demand of the end load is lower.
Disclosure of Invention
The application provides a refrigeration system, a control method, equipment and a storage medium of the refrigeration system, so that energy conservation is realized while the cold energy requirement of a terminal load is met, the refrigeration system can be used for refrigeration of a data center, and the data center can be used for application scenes including but not limited to cloud computing, cloud platform, cloud service, cloud storage, deep learning, big data, neural network and the like.
According to a first aspect of the present application, there is provided a refrigeration system comprising: the refrigerating device comprises a cold storage tank, at least two sets of refrigerating units and a tail end load, wherein each refrigerating unit comprises a refrigerating machine and a plate heat exchanger which are connected in series, the water inlet end of the plate heat exchanger is the water inlet end of the refrigerating unit, and the water outlet end of the refrigerating machine is the water outlet end of the refrigerating unit;
the water inlet end of each refrigeration unit is respectively communicated with the water outlet end of the cold accumulation tank and the water outlet end of the tail end load; the water outlet end of each refrigeration unit is respectively communicated with the water inlet end of the cold accumulation tank and the water inlet end of the tail end load;
and at least two sets of refrigeration units are used for respectively controlling whether the refrigeration machines and/or the plate heat exchangers of each refrigeration unit work or not when the cold energy requirements of the end loads are different so as to inject cold water into the end loads and the cold accumulation tanks.
According to a second aspect of the present application there is provided a refrigeration system as applied to the first aspect, the method being performed by a controller in the refrigeration system, the method comprising:
acquiring a target cold energy requirement of a terminal load;
determining target refrigeration strategies of at least two sets of refrigeration units of the refrigeration system according to the target refrigeration capacity requirement of the end load and the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units;
and controlling whether the refrigerator and/or the plate heat exchanger of any one of the at least two sets of refrigeration units works or not according to the target refrigeration strategy so as to inject cold water into the end load and the cold storage tank.
According to a third aspect of the present application, there is provided a controller for a refrigeration system, comprising:
the acquisition module is used for acquiring the target cold energy requirement of the end load;
the processing module is used for determining target refrigeration strategies of at least two sets of refrigeration units of the refrigeration system according to the target cold energy requirement of the end load and the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units;
and the control module is used for controlling whether the refrigerator and/or the plate heat exchanger of any one of the at least two sets of refrigeration units works or not according to the target refrigeration strategy so as to inject cold water into the end load and the cold storage tank.
According to a fourth aspect of the present application, there is provided an electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of the second aspect.
According to a fifth aspect of the present application, there is provided a non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the method of the second aspect.
According to a sixth aspect of the present application, there is provided a computer program product comprising: a computer program stored in a readable storage medium from which at least one processor of an electronic device can read, the at least one processor executing the computer program causing the electronic device to perform the method of the second aspect.
According to the refrigerating system, the control method, the control equipment and the storage medium of the refrigerating system, at least two sets of refrigerating units are arranged through the refrigerating system, each refrigerating unit comprises the refrigerating machine and the plate heat exchanger which are connected in series, and whether the refrigerating machine and/or the plate heat exchanger of each refrigerating unit work or not is controlled according to the cold energy demand of the end load, so that cold water with required temperature can be provided for the cold storage tank and the end load, and energy saving is achieved while the cold energy demand of the end load is met; in addition, the refrigerating system can run stably, the cold accumulation tank can charge and discharge cold stably, and the refrigerating machine cannot surge and the like; and the refrigeration system has low cost, is convenient to implement and maintain, can be suitable for refrigerating scenes such as a data center and the like, and is also beneficial to reducing the energy efficiency index PUE of the data center.
It should be understood that the description of this section is not intended to identify key or critical features of the embodiments of the application or to delineate the scope of the application. Other features of the present application will become apparent from the description that follows.
Drawings
The drawings are for better understanding of the present solution and do not constitute a limitation of the present application. Wherein:
FIG. 1 is a schematic diagram of a refrigeration system provided in accordance with an embodiment of the present application;
FIG. 2 is a flow chart of a method of controlling a refrigeration system according to an embodiment of the present application;
FIG. 3 is a block diagram of a controller of a refrigeration system provided in accordance with an embodiment of the present application;
fig. 4 is a block diagram of an electronic device used to implement a control method of a refrigeration system according to an embodiment of the present application.
Reference numerals:
110: a refrigerating unit;
111: a refrigerating machine;
112: a plate heat exchanger;
120: a cold accumulation tank;
130: an end load;
140: a primary pump;
150: an annular pipeline;
160: a secondary pump;
161: a first type of secondary pump;
162: a second type secondary pump;
170: a pipe;
171: and (3) a valve.
Detailed Description
Exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to facilitate understanding, and should be considered as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
The existing refrigeration mode of the water system generally adopts a certain fixed refrigeration mode such as freerefrigeration, refrigerator and plate exchanger mixed refrigeration, refrigerator refrigeration and the like, and can stably provide cold water with a certain constant temperature for cooling the end load of a data center such as an air conditioner and the like. And because the data center needs different cold energy demands when operating under different load states, for example, the cold energy demand of the end load is higher when the data center is in high-load operation, and the cold energy demand of the end load is lower when the data center is in low-load operation, and the refrigerating system still needs to keep lower water outlet temperature in order to avoid the problem of surging or stopping, the different cold energy demands of the end load cannot be dealt with, and great energy waste exists under the condition that the cold energy demand of the end load is lower.
In view of the foregoing problems in the prior art, a refrigeration system in an embodiment of the present application relates to the field of refrigeration equipment, and relates to refrigeration equipment that can be used in a data center, where the data center can be used in application scenarios including, but not limited to, cloud computing, cloud platform, cloud service, cloud storage, deep learning, big data, neural network, and the like. Considering to set up two sets at least refrigerating units in refrigerating system, every set refrigerating unit can include different refrigeration modes, and every refrigeration mode refrigeration effect is different, and when one set refrigerating unit operated alone, or many sets refrigerating units were operated simultaneously, cold water of different temperatures was exported in a flexible way, and then can confirm suitable refrigeration strategy according to the cold volume demand of terminal load, realizes energy-conservation when satisfying the cold volume demand of terminal load.
More specifically, each of at least two sets of refrigeration units arranged through the refrigeration system comprises a refrigerator and a plate heat exchanger which are connected in series, and whether the refrigerator and/or the plate heat exchanger of each refrigeration unit work or not is controlled according to the cold energy requirement of the end load, so that cold water with required temperature can be provided for the cold storage tank and the end load, and energy saving is realized while the cold energy requirement of the end load is met; in addition, the refrigerating system can run stably, the cold accumulation tank can charge and discharge cold stably, and the refrigerating machine cannot surge and the like; and the refrigeration system has low cost, is convenient to implement and maintain, can be suitable for refrigerating scenes such as a data center and the like, and is also beneficial to reducing the energy efficiency index PUE of the data center.
The refrigeration system will be described in detail with reference to specific embodiments and accompanying drawings.
An embodiment of the present application provides a refrigeration system, and fig. 1 is a schematic diagram of the refrigeration system provided in the embodiment of the present invention. As shown in fig. 1, the refrigeration system includes: a cold storage tank 120, at least two sets of refrigeration units 110 (four sets are illustrated in the figure), and an end load 130. Wherein the end load 130 may be an air conditioner or other equipment requiring water cooling, etc.
Each refrigeration unit 110 includes a refrigerator 111 and a plate heat exchanger 112 connected in series, that is, the water outlet end of the plate heat exchanger 112 is connected to the water inlet end of the refrigeration unit 110, the water inlet end of the plate heat exchanger 112 is the water inlet end of the refrigeration unit 110, and the water outlet end of the refrigerator 111 is the water outlet end of the refrigeration unit 110. Wherein the plate heat exchanger 112 is also called plate heat exchanger, is a heat exchanger formed by stacking a series of metal sheets with certain corrugated shape; while the refrigerator 111 transfers heat of the cooled object having a low temperature to the ambient medium to obtain cold, and energy conversion and heat transfer are achieved by the refrigerant. Typically the plate heat exchanger has a lower refrigeration efficiency than the refrigerator.
In the present embodiment, the water inlet end of each refrigeration unit 110 is respectively communicated with the water outlet end of the cold storage tank 120 and the water outlet end of the end load 130; the water outlet end of each refrigeration unit 110 is respectively communicated with the water inlet end of the cold storage tank 120 and the water inlet end of the end load 130. By connecting at least two sets of refrigeration units 110 in parallel, it is possible to flexibly employ a configuration in which at least one set of refrigeration units 110 simultaneously supplies cold water to the end load 130 and the cold storage tank 120, i.e., supplies cold to the end load 130 while simultaneously charging the cold storage tank 120.
In the present embodiment, at least two sets of refrigeration units 110 are used to control whether the refrigerator 111 and/or the plate heat exchanger 112 of each refrigeration unit 110 is operated when the cooling capacity requirements of the end load 130 are different, respectively, so as to inject cold water into the end load 130 and the cold storage tank 120.
In this embodiment, since at least two sets of refrigeration units 110 are used in parallel, and each refrigeration unit 110 includes a refrigerator 111 and a plate heat exchanger 112 connected in series, for any refrigeration unit 110, there are three refrigeration modes, namely: only the plate heat exchanger 112 is turned on, only the refrigerator 111 is turned on, and both the refrigerator 111 and the plate heat exchanger 112 are turned on.
The temperatures of the cold water provided by the three refrigeration modes are different, for example, only the plate heat exchanger 112 is started to have the highest water temperature, only the refrigerator 111 is started to have the lowest water temperature, and the refrigerator 111 and the plate heat exchanger 112 are started to have the lowest water temperature, if at least two sets of refrigeration units 110 are adopted at the same time, the cold water output by each refrigeration unit can be mixed, and the mixed cold water can realize more possible temperatures by taking into account the starting number of the refrigeration units 110, the starting modes of the refrigeration units 111 and the plate heat exchanger 112 between the started refrigeration units 110, various strategies of starting the refrigerator 111 and/or the plate heat exchanger 112 of each started refrigeration unit 110, and the like, and of course, the flow rate of the cold water output by the started refrigeration units 110 can be controlled.
For example, the first set of refrigeration units 110 only starts the plate heat exchanger 112, the second set of refrigeration units 110 simultaneously starts the refrigerator 111 and the plate heat exchanger 112, the first set of refrigeration units 110 outputs a relatively high water temperature, and the second set of refrigeration units 110 outputs a relatively low water temperature, so that the water temperature obtained after mixing is between the two water temperatures, and if the two sets of refrigeration units 110 output the same cold water flow, the water temperature after mixing can be a middle value of the two water temperatures.
Based on the above-mentioned refrigerating system, in this embodiment, considering that the cooling capacity requirements of the end load 130 are different, for example, when the data center is operated under high load, the cooling capacity requirement of the end load 130 is higher, a lower water temperature is adopted, and when the data center is operated under low load, the cooling capacity requirement of the end load 130 is lower, a lower water temperature is adopted, and through the above-mentioned refrigerating system and different control strategies, the corresponding required water temperature can be output, so that energy saving can be realized while the cooling capacity requirement of the end load 130 is satisfied. It should be noted that, the above-mentioned refrigerating system adopts different control strategies, which can be controlled manually or automatically by the controller.
In the refrigeration system provided in this embodiment, at least two sets of refrigeration units 110 are provided through the refrigeration system, each refrigeration unit 110 includes a refrigerator 111 and a plate heat exchanger 112 connected in series, and whether the refrigerator 111 and/or the plate heat exchanger 112 of each refrigeration unit 110 operate or not is controlled according to the cooling capacity requirement of the end load 130, so that cooling water with a required temperature can be provided to the cold storage tank 120 and the end load 130, so that energy saving is achieved while the cooling capacity requirement of the end load 130 is satisfied; in addition, the refrigerating system can stably operate, the cold accumulation tank 120 can stably charge and discharge cold, and the phenomenon of surge and the like of the refrigerator 111 can not occur; and the refrigeration system has low cost, is convenient to implement and maintain, can be suitable for refrigeration of scenes such as a data center and the like, and is also beneficial to reducing the energy efficiency index PUE (Power Usage Effectiveness) of the data center.
Optionally, the refrigeration system may further comprise a controller to implement automatic control of different refrigeration strategies of the refrigeration system.
Specifically, the controller is respectively connected with the end load 130 and at least two sets of refrigeration units 110; the controller is configured to obtain a target cooling capacity requirement of the end load 130, and control whether the refrigerator 111 and/or the plate heat exchanger 112 of each refrigeration unit 110 operate according to the target cooling capacity requirement of the end load 130, so as to inject cold water into the end load 130 and the cold storage tank 120.
The controller obtains the target cooling capacity requirement of the end load 130, and may specifically detect an operation state of the data center, for example, when the data center is operated under a high load, determine that the target cooling capacity requirement of the end load 130 is higher, and if the data center is operated under a low load, determine that the target cooling capacity requirement of the end load 130 is lower. Specifically, the level of the data center operation load may be quantified in advance, and a corresponding relationship between the load and the target cooling capacity demand of the end load 130 may be determined, so that after the data center load is detected, the target cooling capacity demand of the end load 130 may be determined according to the corresponding relationship.
The current refrigerating capacity of the refrigerator and the plate heat exchanger in the refrigerating unit is influenced by relevant factors such as current weather and the like, for example, the refrigerating capacity of the refrigerator and the plate heat exchanger is reduced when the air temperature is high. The refrigeration capacity of the refrigerator and the plate heat exchanger needs to be taken into account when specifying the refrigeration strategy, while taking into account the refrigeration demand of the end load. In addition, the corresponding relationship between the current refrigeration capacities of the refrigerators and the plate heat exchangers in the refrigeration units and the preset refrigeration strategy can be obtained in advance, and then after the target refrigeration capacity of the terminal load 130 and the current refrigeration capacities of the refrigerators and the plate heat exchangers are determined, the corresponding relationship between the preset terminal load 130 refrigeration capacity, the current refrigeration capacities of the refrigerators and the plate heat exchangers in the refrigeration units and the preset refrigeration strategy is queried, so that the target refrigeration strategy of the refrigeration system is determined, and then whether the refrigerators 111 and/or the plate heat exchangers 112 of each refrigeration unit 110 work or not is controlled according to the target refrigeration strategy, so as to meet the refrigeration capacity requirement of the terminal load 130.
On the basis of any one of the above embodiments, the refrigeration system specifically further includes a primary pump 140; the number of the primary pumps 140 may be the same as the number of the refrigerating units 110, the water inlet end of each refrigerating unit 110 is respectively connected to one primary pump 140, and the water outlet end of the cold storage tank 120 and the water outlet end of the end load 130 are converged and then connected to each primary pump 140, so as to feed water into the water inlet end of the refrigerating unit 110 connected with the primary pump 140 after the primary pump 140 is started.
That is, in this embodiment, when the first set of refrigeration units 110 needs to be applied, the primary pump 140 connected to the first set of refrigeration units 110 is started, and the water collected at the water outlet end of the cold storage tank 120 and the water outlet end of the end load 130 is input to the water inlet end of the first set of refrigeration units 110 through the primary pump 140; likewise, when a second set of refrigeration units 110 is desired, then the primary pump 140 to which the second set of refrigeration units 110 is connected is activated, and so on.
It should be noted that whether the primary pump 140 is activated is determined by the above-described refrigeration strategy. The control of the primary pumps 140 may be manually controlled or may be automatically controlled by the controller described above, and accordingly, it is necessary that the controller is connected to each of the primary pumps 140.
In addition to any of the above embodiments, the refrigeration system may further include an annular circuit 150; the water outlet end of each refrigeration unit 110 is connected to the annular pipeline 150, and the water inlet end of the cold storage tank 120 and the water inlet end of the end load 130 are connected to the annular pipeline 150, respectively, so that the cold water output from the water outlet end of the refrigeration unit 110 reaches the water inlet end of the cold storage tank 120 and the water inlet end of the end load 130 in the shortest path in the annular pipeline 150.
In this embodiment, the shortest path can be selected by the loop pipe 150 for the cold water output by the refrigeration unit 110 to reach the water inlet end of the cold storage tank 120 and the water inlet end of the end load 130, for example, as shown in fig. 1, the cold water output by the left refrigeration unit 110 can reach the water inlet end of the cold storage tank 120 and the water inlet end of the end load 130 from the path on the left side of the loop pipe 150, and the cold water output by the right refrigeration unit 110 can reach the water inlet end of the cold storage tank 120 and the water inlet end of the end load 130 from the path on the right side of the loop pipe 150, in addition, the loop pipe 150 can facilitate the mixing of the cold water output by the different refrigeration units 110, and the cold water output by the different refrigeration units 110 can be converged from the different paths to the water inlet end of the cold storage tank 120 and the water inlet end of the end load 130 and then be input to the water inlet end of the cold storage tank 120 and the water inlet end 130 after mixing.
On the basis of the above embodiment, the refrigeration system further includes a secondary pump 160 for connecting the water inlet end of the end load 130 with the loop pipe 150 to feed water into the water inlet end of the end load 130 after the secondary pump 160 is started.
Optionally, the secondary pump 160 includes a first type of secondary pump 161 and a second type of secondary pump 162;
at least two secondary pumps 161 of the first type are provided, and the water inlet end of each secondary pump 161 of the first type is connected to different positions of the annular pipeline 150, so that water can be fed to the end load 130 by starting the secondary pump 161 of the first type when only one refrigeration unit 110 is used for refrigeration, or when at least two refrigeration units 110 are used for refrigeration and the starting modes of each refrigeration unit 110 on the refrigerator 111 and the plate heat exchanger 112 are the same. And the flow rate of the second-type secondary pump 162 is larger than that of the first-type secondary pump 161, so that when the plurality of refrigeration units 110 are used for refrigeration and the starting modes of each refrigeration unit 110 on the refrigerator 111 and the plate heat exchanger 112 are different, the cold water of different refrigeration units 110 is mixed by starting the second-type secondary pump 162 and then water is fed to the end load 130.
In this embodiment, when only one refrigeration unit 110 is used for refrigeration, or when at least two refrigeration units 110 are used for refrigeration and the starting modes of each refrigeration unit 110 for the refrigerator 111 and the plate heat exchanger 112 are the same, the cold water output by the refrigeration unit 110 in this case has a single temperature, and is not required to be mixed, the water inlet ends of the at least two first-type secondary pumps 161 are connected to different positions of the annular pipeline 150, so that the cold water output by the water outlet ends of the refrigeration units 110 can reach the water inlet end of the end load 130 in the shortest path in the annular pipeline 150, as shown in fig. 1, when the left refrigeration unit 110 is used, the left-side first-type secondary pump 161 closest to the water outlet end of the left refrigeration unit 110 can be started, and the cold water output by the left-side refrigeration unit 110 can reach the left-side first-type secondary pump 161 from the left path of the annular pipeline 150, and is input to the water inlet end of the end load 130 through the left-side first-type secondary pump 161; when the right side refrigeration unit 110 is used, the right side first type secondary pump 161 closest to the water outlet end of the right side refrigeration unit 110 may be activated. In addition, at least two secondary pumps 161 of the first type may also be used for mutual backup, for example, when one secondary pump 161 of the first type fails, another secondary pump 161 of the first type may be used, and water can be fed to the water inlet end of the end load 130.
In the case that a plurality of refrigeration units 110 are used for refrigeration and the starting modes of each refrigeration unit 110 on the refrigerator 111 and the plate heat exchanger 112 are different, the cold water output by each refrigeration unit 110 is different in temperature and needs to be mixed, so that the cold water of different refrigeration units 110 is mixed by the second-type secondary pump 162 with a larger flow and then is input to the water inlet end of the end load 130, a better mixing effect is ensured, and the water temperature after mixing is stable.
It should be noted that whether the secondary pump is started is also determined by the above-described refrigeration strategy, that is, the first type secondary pump 161 is started at a proper position when water mixing is not required, and the second type secondary pump 162 is started when water mixing is required. Likewise, the control of the secondary pumps may be manually controlled or automatically controlled by the controller described above, and accordingly, the controller is required to be connected to each secondary pump.
On the basis of any of the above embodiments, the annular pipeline 150 is connected to the water inlet end of the cold accumulation tank 120 through at least two pipes 170; the water inlet end of each pipeline 170 is connected to different positions of the annular pipeline 150, and each pipeline 170 is provided with a valve 171, so that when a plurality of refrigeration units 110 are adopted for refrigeration and the starting modes of each refrigeration unit 110 on the refrigerator 111 and the plate heat exchanger 112 are different, cold water of different refrigeration units 110 is controlled to be mixed through the valve 171 and then fed into the cold storage tank 120, and the cold storage tank 120 is charged with cold.
In this embodiment, when cold water is injected into the cold storage tank 120 from the annular pipeline 150, only the connected channel is needed, no water pump is needed, and the valve 171 is arranged on the pipeline 170, so that the on-off of the pipeline 170 can be controlled, and the flow of water into the cold storage tank 120 can be controlled. In this embodiment, the water inlet end of the cold storage tank 120 may be connected through a plurality of pipes 170, where the water inlet end of each pipe 170 is connected to a different position of the annular pipeline 150, so that the cold water output from the water outlet end of the refrigeration unit 110 is more convenient to reach the water inlet end of the cold storage tank 120 in the shortest path in the annular pipeline 150, as shown in fig. 1, when the left refrigeration unit 110 is adopted, the valve 171 of the left pipe closest to the water outlet end of the left refrigeration unit 110 may be opened, and the cold water output from the left refrigeration unit 110 may reach the left pipe from the path on the left side of the annular pipeline 150 and be input to the water inlet end of the cold storage tank 120 through the pipe; when the right side refrigerating unit 110 is used, the valve 171 of the right side pipe closest to the water outlet end of the right side refrigerating unit 110 may be opened.
In addition, cold water input through the plurality of pipelines 170 is converged and then enters the water inlet end of the cold storage tank 120, so that the cold water temperature can be ensured to be stable, the cold storage requirement of the cold storage tank 120 is met, the influence of the temperature of the water, which is close to a certain refrigerating unit 110, on the joint of the pipeline and the annular pipeline 150 when a single pipeline is adopted is avoided, for example, the refrigerating unit 110 only starts the plate heat exchanger 112, the temperature of the output cold water of the refrigerating unit 110 is relatively high, and the joint of the single pipeline and the annular pipeline 150 is close to the refrigerating unit 110, so that the water temperature input into the cold storage tank 120 can be higher, the temperature of the output water is higher when the cold storage tank 120 is cooled, and the cooling of the end load 130 cannot be ensured. In addition, the cold accumulation tank 120 adopts a multi-pipeline access mode, so that a single risk point caused by the failure of the single pipeline valve 171 can be avoided, any pipeline in the multi-pipeline has a problem, the cold accumulation tank 120 can be continuously charged with cold by other pipelines, the stable cold charging of the cold accumulation tank 120 is ensured, and the reliability of the system is improved.
It should be noted that, the control of the valves 171 of the pipeline 170 may be manually controlled or may be automatically controlled by the above-mentioned controller, and accordingly, it is necessary that the controller is connected to each valve 171.
On the basis of any of the above embodiments, when the refrigeration unit 110 does not operate, for example, when the refrigeration unit 110 fails, or the refrigeration unit 110 stops operating in a peak period of electricity consumption, cold water can be injected into the end load 130 from the cold storage tank 120, so that smooth transition operation of the refrigeration system is ensured, and safety of the data center is ensured.
An embodiment of the present application provides a control method of a refrigeration system, and fig. 2 is a flowchart of a method provided in an embodiment of the present invention. The control method of the refrigeration system is applied to the refrigeration system in the above embodiment, and the execution body may be a controller in the refrigeration system, as shown in fig. 2, and the specific steps of the method are as follows:
s201, acquiring a target cooling capacity requirement of the end load.
In this embodiment, the controller obtains the target cooling capacity requirement of the end load, and may specifically detect the operation state of the data center, for example, when the data center is operated under high load, it is determined that the target cooling capacity requirement of the end load is higher, and when the data center is operated under low load, it is determined that the target cooling capacity requirement of the end load is lower. Specifically, the method can quantify the running load of the data center in advance, and determine the corresponding relation between the load and the target cold energy demand of the end load, so that the target cold energy demand of the end load can be determined according to the corresponding relation after the load of the data center is detected. Of course, other manners may be adopted to obtain the target cooling capacity requirement of the end load, which is not described herein.
S202, determining target refrigeration strategies of at least two sets of refrigeration units of the refrigeration system according to the target refrigeration capacity requirement of the end load and the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units.
In this embodiment, the correspondence between the current refrigeration capacities of the refrigerator and the plate heat exchanger in the refrigeration unit and the preset refrigeration strategy and the refrigeration capacity of the end load may be obtained in advance, and then after the target refrigeration capacity demand of the end load is determined, the correspondence between the preset end load refrigeration capacity demand and the current refrigeration capacities of the refrigerator and the plate heat exchanger in the refrigeration unit and the preset refrigeration strategy may be queried, so as to determine the target refrigeration strategy of the refrigeration system. Of course, other means of establishing the target refrigeration strategy may be employed.
Wherein the refrigeration strategy may include, but is not limited to: the starting number of the refrigerating units is controlled, the starting modes of the started refrigerating units on the refrigerating machine and the plate heat exchanger are the same or different, and each started refrigerating unit starts the refrigerating machine and/or the plate heat exchanger.
In addition, the current refrigerating capacity of the refrigerator and the plate heat exchanger in the refrigerating unit is affected by relevant factors such as current weather, for example, the refrigerating capacity of the refrigerator and the plate heat exchanger is reduced when the air temperature is high. The refrigeration capacity of the refrigerator and the plate heat exchanger needs to be taken into account when specifying the refrigeration strategy, while taking into account the refrigeration demand of the end load. In this embodiment, the factors related to the refrigerating capacity can be detected by some sensors, for example, the current weather condition is obtained, so that the current refrigerating capacity of the refrigerator and the plate heat exchanger can be determined.
S203, controlling whether the refrigerator and/or the plate heat exchanger of any one of the at least two sets of refrigeration units works or not according to the target refrigeration strategy so as to inject cold water into the end load and the cold storage tank.
In this embodiment, after determining the target refrigeration strategy, the controller controls according to the target refrigeration strategy, including coupling to control whether the refrigerator and/or the plate heat exchanger of any one of the at least two sets of refrigeration units is operated, for example, only the refrigerator is started, only the plate heat exchanger is started, both the refrigerator and the plate heat exchanger are started, or neither the refrigerator nor the plate heat exchanger are started.
On the basis of any one of the above embodiments, optionally, the water inlet end of each refrigeration unit is respectively connected to one of the primary pumps, and the water outlet end of the cold storage tank and the water outlet end of the end load are converged and then connected to each of the primary pumps, and the method further includes:
and controlling a primary pump connected with the started refrigerating unit to start according to the refrigerating strategy, so as to feed water to the water inlet end of the started refrigerating unit through the primary pump.
On the basis of any one of the foregoing embodiments, optionally, the water outlet end of each refrigeration unit is respectively connected to an annular pipeline, and the water inlet end of the end load is connected to the annular pipeline through a secondary pump, and the method further includes:
And controlling the secondary pump to start according to the refrigeration strategy so as to feed water to the water inlet end of the end load through the secondary pump.
In addition to any of the above embodiments, optionally, the secondary pump includes a first type secondary pump and a second type secondary pump, and a flow rate of the second type secondary pump is greater than that of the first type secondary pump; the method further comprises the steps of:
when only one refrigerating unit is used for refrigerating, or at least two refrigerating units are used for refrigerating, and the starting modes of each refrigerating unit on the refrigerating machine and the plate heat exchanger are the same, the first-type secondary pump is started to feed water to the tail end load; or alternatively
When a plurality of refrigeration units are adopted for refrigeration and the starting modes of each refrigeration unit on the refrigerator and the plate heat exchanger are different, the second-class secondary pump is started to mix cold water of different refrigeration units, and then water is fed to the tail end load.
The principle and technical effects of the control method of the refrigeration system provided in this embodiment can be seen in the above embodiments, and the details are not provided here.
According to the control method of the refrigerating system, at least two sets of refrigerating units are arranged through the refrigerating system, each refrigerating unit comprises a refrigerating machine and a plate heat exchanger which are connected in series, and whether the refrigerating machine and/or the plate heat exchanger of each refrigerating unit work or not is controlled according to the cold energy requirement of the end load, so that cold water with required temperature can be provided for the cold storage tank and the end load, and energy saving is achieved while the cold energy requirement of the end load is met; in addition, the refrigerating system can run stably, the cold accumulation tank can charge and discharge cold stably, and the refrigerating machine cannot surge and the like; and the refrigeration system has low cost, is convenient to implement and maintain, can be suitable for refrigerating scenes such as a data center and the like, and is also beneficial to reducing the energy efficiency index PUE of the data center.
An embodiment of the present application provides a controller of a refrigeration system, and fig. 3 is a structural diagram of the controller of the refrigeration system provided by the embodiment of the present invention. As shown in fig. 3, the controller 300 of the refrigeration system specifically includes: an acquisition module 301, a processing module 302 and a control module 303.
An obtaining module 301, configured to obtain a target cooling capacity requirement of a terminal load;
a processing module 302, configured to determine a target refrigeration strategy of at least two sets of refrigeration units of the refrigeration system according to the target refrigeration requirement of the end load and the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units;
and the control module 303 is used for controlling whether the refrigerator and/or the plate heat exchanger of any one of the at least two sets of refrigeration units works or not according to the target refrigeration strategy so as to inject cold water into the end load and the cold storage tank.
Based on the above embodiments, the processing module 302 is configured to, when determining the target refrigeration strategy of at least two sets of refrigeration units of the refrigeration system according to the target refrigeration requirement of the end load and the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units:
And determining target refrigeration strategies of at least two sets of refrigeration units of the refrigeration system according to the target refrigeration capacity requirement of the end load, the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units and the corresponding relation between the preset end load refrigeration capacity requirement and the preset refrigeration strategies.
On the basis of any one of the above embodiments, the refrigeration strategy includes:
the starting number of the refrigerating units is controlled, the starting modes of the started refrigerating units on the refrigerating machine and the plate heat exchanger are the same or different, and each started refrigerating unit starts the refrigerating machine and/or the plate heat exchanger.
On the basis of any one of the above embodiments, the water inlet end of each refrigeration unit is respectively connected to one of the primary pumps, the water outlet end of the cold storage tank and the water outlet end of the end load are converged and then connected to each of the primary pumps, and the control module 303 is further configured to:
and controlling a primary pump connected with the started refrigerating unit to start according to the refrigerating strategy, so as to feed water to the water inlet end of the started refrigerating unit through the primary pump.
On the basis of any of the above embodiments, the water outlet end of each refrigeration unit is connected to an annular pipeline, the water inlet end of the end load is connected to the annular pipeline through a secondary pump, and the control module 303 is further configured to:
And controlling the secondary pump to start according to the refrigeration strategy so as to feed water to the water inlet end of the end load through the secondary pump.
On the basis of any embodiment, the secondary pump comprises a first secondary pump and a second secondary pump, and the flow rate of the second secondary pump is larger than that of the first secondary pump; the control module 303 is further configured to:
when only one refrigerating unit is used for refrigerating, or at least two refrigerating units are used for refrigerating, and the starting modes of each refrigerating unit on the refrigerating machine and the plate heat exchanger are the same, the first-type secondary pump is started to feed water to the tail end load; or alternatively
When a plurality of refrigeration units are adopted for refrigeration and the starting modes of each refrigeration unit on the refrigerator and the plate heat exchanger are different, the second-class secondary pump is started to mix cold water of different refrigeration units, and then water is fed to the tail end load.
The controller of the refrigeration system provided in this embodiment may be specifically configured to perform the method embodiments provided in the foregoing figures, and specific functions are not provided herein.
The controller of the refrigeration system provided by the embodiment is provided with at least two sets of refrigeration units through the refrigeration system, each refrigeration unit comprises a refrigerator and a plate heat exchanger which are connected in series, and whether the refrigerator and/or the plate heat exchanger of each refrigeration unit work or not is controlled according to the cold energy requirement of the end load, so that cold water with required temperature can be provided for the cold storage tank and the end load, and energy saving is realized while the cold energy requirement of the end load is met; in addition, the refrigerating system can run stably, the cold accumulation tank can charge and discharge cold stably, and the refrigerating machine cannot surge and the like; and the refrigeration system has low cost, is convenient to implement and maintain, can be suitable for refrigerating scenes such as a data center and the like, and is also beneficial to reducing the energy efficiency index PUE of the data center.
According to embodiments of the present application, an electronic device and a readable storage medium are also provided.
According to an embodiment of the present application, there is also provided a computer program product comprising: computer program stored in a readable storage medium, from which the computer program can be read by at least one processor of an electronic device, the at least one processor executing the computer program causing the electronic device to perform the method provided by any one of the embodiments described above.
As shown in fig. 4, a block diagram of an electronic device according to a control method of a refrigeration system according to an embodiment of the present application is shown. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the application described and/or claimed herein.
As shown in fig. 4, the electronic device includes: one or more processors 401, memory 402, and interfaces for connecting the components, including a high-speed interface and a low-speed interface. The various components are interconnected using different buses and may be mounted on a common motherboard or in other manners as desired. The processor may process instructions executing within the electronic device, including instructions stored in or on memory to display graphical information of the GUI on an external input/output device, such as a display device coupled to the interface. In other embodiments, multiple processors and/or multiple buses may be used, if desired, along with multiple memories. Also, multiple electronic devices may be connected, each providing a portion of the necessary operations (e.g., as a server array, a set of blade servers, or a multiprocessor system). One processor 401 is illustrated in fig. 4.
The memory 402 is used as a non-transitory computer readable storage medium, and may be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules (e.g., the acquisition module 301, the processing module 302, and the control module 303 shown in fig. 3) corresponding to a control method of a refrigeration system in an embodiment of the present application. The processor 401 executes various functional applications of the server and data processing, i.e., implements the control method of the refrigeration system in the above-described method embodiment, by running non-transitory software programs, instructions, and modules stored in the memory 402.
The electronic device of the control method of the refrigeration system may further include: an input device 403 and an output device 404. The processor 401, memory 402, input device 403, and output device 404 may be connected by a bus or otherwise, for example in fig. 4.
The input device 403 may receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic device of the control method of the refrigeration system, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, a pointer stick, one or more mouse buttons, a track ball, a joystick, and the like. The output device 404 may include a display apparatus, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibration motors), among others. The display device may include, but is not limited to, a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, and a plasma display. In some implementations, the display device may be a touch screen.
Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, application specific ASIC (application specific integrated circuit), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
These computer programs (also known as programs, software applications, or code) include machine instructions for a programmable processor, and can be implemented in a high-level procedural and/or object-oriented programming language, and/or in assembly/machine language. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or device (e.g., magnetic discs, optical disks, memory, programmable Logic Devices (PLDs)) used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the internet.
The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
According to the technical scheme, at least two sets of refrigeration units are arranged through the refrigeration system, each refrigeration unit comprises a refrigerator and a plate heat exchanger which are connected in series, and whether the refrigerator and/or the plate heat exchanger of each refrigeration unit work or not is controlled according to the cold energy demand of the end load, so that cold water with required temperature can be provided for the cold storage tank and the end load, and energy saving is achieved while the cold energy demand of the end load is met; in addition, the refrigerating system can run stably, the cold accumulation tank can charge and discharge cold stably, and the refrigerating machine cannot surge and the like; and the refrigeration system has low cost, is convenient to implement and maintain, can be suitable for refrigerating scenes such as a data center and the like, and is also beneficial to reducing the energy efficiency index PUE of the data center.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present application may be performed in parallel, sequentially, or in a different order, provided that the desired results of the technical solutions disclosed in the present application can be achieved, and are not limited herein.
The above embodiments do not limit the scope of the application. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application are intended to be included within the scope of the present application.
Claims (16)
1. A refrigeration system, comprising: the refrigerating device comprises a cold storage tank, at least two sets of refrigerating units and a tail end load, wherein each refrigerating unit comprises a refrigerating machine and a plate heat exchanger which are connected in series, the water inlet end of the plate heat exchanger is the water inlet end of the refrigerating unit, and the water outlet end of the refrigerating machine is the water outlet end of the refrigerating unit;
the water inlet end of each refrigeration unit is respectively communicated with the water outlet end of the cold accumulation tank and the water outlet end of the tail end load; the water outlet end of each refrigeration unit is respectively communicated with the water inlet end of the cold accumulation tank and the water inlet end of the tail end load; each of the refrigeration units has three refrigeration modes: only the plate heat exchanger is started, only the refrigerator is started, and the refrigerator and the plate heat exchanger are simultaneously started;
At least two sets of refrigeration units are used for respectively controlling whether the refrigeration machines and/or the plate heat exchangers of each refrigeration unit work or not when the cold energy requirements of the end loads are different so as to inject cold water into the end loads and the cold accumulation tanks;
the device also comprises an annular pipeline; the water outlet end of each refrigeration unit is respectively connected to the annular pipeline;
the secondary pump is used for connecting the water inlet end of the end load with the annular pipeline so as to feed water into the water inlet end of the end load after the secondary pump is started;
wherein the secondary pump comprises a first type secondary pump and a second type secondary pump;
the water inlet ends of the first type of secondary pumps are connected to different positions of the annular pipeline, and the water inlet ends of the first type of secondary pumps are used for feeding water to the end load by starting the first type of secondary pumps when only one refrigeration unit is used for refrigeration or when at least two refrigeration units are used for refrigeration and the starting modes of the refrigeration units on the refrigeration machine and the plate heat exchanger are the same;
and the flow rate of the second-class secondary pump is larger than that of the first-class secondary pump, and the second-class secondary pump is used for mixing cold water of different refrigeration units and then feeding water to the tail end load when a plurality of refrigeration units are adopted for refrigeration and the starting modes of each refrigeration unit on the refrigeration machine and the plate heat exchanger are different.
2. The refrigeration system of claim 1, further comprising: a controller;
the controller is respectively connected with the end load and the at least two sets of refrigeration units;
the controller is used for acquiring the target cold energy requirement of the end load and respectively controlling whether each refrigeration unit works or not according to the target cold energy requirement of the end load and the current refrigeration capacity of the refrigeration machine and the plate heat exchanger by a corresponding refrigeration strategy so as to inject cold water into the end load and the cold accumulation tank.
3. The refrigeration system of claim 1 or 2, further comprising a primary pump;
the water inlet end of each refrigeration unit is respectively connected with one primary pump, the water outlet end of the cold accumulation tank and the water outlet end of the tail end load are converged and then connected to each primary pump, so that water is fed to the water inlet end of the refrigeration unit connected with the primary pump after the primary pump is started.
4. The refrigeration system of claim 1 or 2, wherein the water inlet end of the cold storage tank and the water inlet end of the end load are connected to the annular pipe, respectively, such that cold water output from the water outlet end of the refrigeration unit reaches the water inlet end of the cold storage tank and the water inlet end of the end load in the shortest path in the annular pipe.
5. The refrigeration system of claim 4, wherein the annular conduit connects the water inlet end of the cold storage tank through at least two pipes; the water inlet end of each pipeline is connected to different positions of the annular pipeline, and a valve is arranged on each pipeline so as to control cold water of different refrigeration units to be mixed through the valve and then to enter the cold storage tank for cooling when a plurality of refrigeration units are adopted for refrigeration and the starting modes of the refrigeration units to the refrigeration machine and the plate heat exchanger are different.
6. The refrigeration system of claim 2, wherein the refrigeration strategy comprises:
the starting number of the refrigerating units is controlled, the starting modes of the started refrigerating units on the refrigerating machine and the plate heat exchanger are the same or different, and each started refrigerating unit starts the refrigerating machine and/or the plate heat exchanger.
7. A refrigeration system according to claim 1 or 2, wherein cold water is injected into the end load by the cold storage tank when the refrigeration unit is not in operation.
8. A control method of a refrigeration system, applied to the refrigeration system according to any one of claims 1 to 7, the method being performed by a controller in the refrigeration system, the method comprising:
Acquiring a target cold energy requirement of a terminal load;
determining target refrigeration strategies of at least two sets of refrigeration units of the refrigeration system according to the target refrigeration capacity requirement of the end load and the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units;
and controlling whether the refrigerator and/or the plate heat exchanger of any one of the at least two sets of refrigeration units works or not according to the target refrigeration strategy so as to inject cold water into the end load and the cold storage tank.
9. The method of claim 8, wherein the determining a target refrigeration strategy for at least two sets of refrigeration units of the refrigeration system based on the target refrigeration demand of the end load and the current refrigeration capacities of the refrigeration machines and plate heat exchangers in the refrigeration units comprises:
and determining target refrigeration strategies of at least two sets of refrigeration units of the refrigeration system according to the target refrigeration capacity requirement of the end load, the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units and the corresponding relation between the preset end load refrigeration capacity requirement and the preset refrigeration strategies.
10. The method of claim 8 or 9, wherein the refrigeration strategy comprises:
The starting number of the refrigerating units is controlled, the starting modes of the started refrigerating units on the refrigerating machine and the plate heat exchanger are the same or different, and each started refrigerating unit starts the refrigerating machine and/or the plate heat exchanger.
11. The method of claim 10, wherein the water inlet end of each refrigeration unit is connected to one primary pump, and the water outlet end of the cold storage tank and the water outlet end of the end load are converged and then connected to each primary pump, the method further comprising:
and controlling a primary pump connected with the started refrigerating unit to start according to the refrigerating strategy, so as to feed water to the water inlet end of the started refrigerating unit through the primary pump.
12. The method of claim 10, wherein the water outlet end of each refrigeration unit is connected to a ring line, and the water inlet end of the end load is connected to the ring line by a secondary pump, the method further comprising:
and controlling the secondary pump to start according to the refrigeration strategy so as to feed water to the water inlet end of the end load through the secondary pump.
13. The method of claim 12, wherein the secondary pumps comprise a first type of secondary pump and a second type of secondary pump, the second type of secondary pump having a greater flow rate than the first type of secondary pump; the method further comprises the steps of:
When only one refrigerating unit is used for refrigerating, or at least two refrigerating units are used for refrigerating, and the starting modes of each refrigerating unit on the refrigerating machine and the plate heat exchanger are the same, the first-type secondary pump is started to feed water to the tail end load; or alternatively
When a plurality of refrigeration units are adopted for refrigeration and the starting modes of each refrigeration unit on the refrigerator and the plate heat exchanger are different, the second-class secondary pump is started to mix cold water of different refrigeration units, and then water is fed to the tail end load.
14. A controller for a refrigeration system, comprising:
the acquisition module is used for acquiring the target cold energy requirement of the end load;
the processing module is used for determining target refrigeration strategies of at least two sets of refrigeration units of the refrigeration system according to the target cold energy requirement of the end load and the current refrigeration capacities of the refrigeration machines and the plate heat exchangers in the refrigeration units, and each refrigeration unit has three refrigeration modes: only the plate heat exchanger is started, only the refrigerator is started, and the refrigerator and the plate heat exchanger are simultaneously started;
the control module is used for controlling whether the refrigerator and/or the plate heat exchanger of any one of the at least two sets of refrigeration units works or not according to the target refrigeration strategy so as to inject cold water into the end load and the cold storage tank;
The water outlet end of each refrigerating unit is connected to the annular pipeline respectively, the water inlet end of the tail end load is connected with the annular pipeline through a secondary pump, and the control module is further used for:
controlling the secondary pump to start according to the refrigeration strategy so as to feed water to the water inlet end of the tail end load through the secondary pump;
the secondary pump comprises a first secondary pump and a second secondary pump, and the flow rate of the second secondary pump is larger than that of the first secondary pump; the control module is further configured to:
when only one refrigerating unit is used for refrigerating, or at least two refrigerating units are used for refrigerating, and the starting modes of each refrigerating unit on the refrigerating machine and the plate heat exchanger are the same, the first-type secondary pump is started to feed water to the tail end load; or alternatively
When a plurality of refrigeration units are adopted for refrigeration and the starting modes of each refrigeration unit on the refrigerator and the plate heat exchanger are different, the second-class secondary pump is started to mix cold water of different refrigeration units, and then water is fed to the tail end load.
15. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
The memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 8-13.
16. A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the method of any one of claims 8-13.
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