CN107816828A - Method, apparatus and system for the temperature set-point of the refrigeration machine that determines refrigeration system - Google Patents

Method, apparatus and system for the temperature set-point of the refrigeration machine that determines refrigeration system Download PDF

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Publication number
CN107816828A
CN107816828A CN201710976946.5A CN201710976946A CN107816828A CN 107816828 A CN107816828 A CN 107816828A CN 201710976946 A CN201710976946 A CN 201710976946A CN 107816828 A CN107816828 A CN 107816828A
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China
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performance
current
coefficient
point
refrigeration system
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CN201710976946.5A
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CN107816828B (en
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刘忠南
王鲲
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Intel Products Chengdu Co Ltd
Intel Corp
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Intel Products Chengdu Co Ltd
Intel Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices

Abstract

This application provides the method for the temperature set-point for determining the refrigeration machine in refrigeration system, including：Obtain the initial cold load value of the refrigeration system；And the temperature set-point of the refrigeration machine is determined based on the comprehensive coefficient of performance of acquired initial cold load value and the refrigeration system.Using this method, the cooling effectiveness of refrigeration system can be effectively improved.

Description

For the temperature set-point of the refrigeration machine that determines refrigeration system method, apparatus and System
Technical field
The application is usually directed to field of refrigeration, more particularly, to for determining the refrigeration machine in refrigeration system The method, apparatus and refrigeration system of temperature set-point.
Background technology
With the disposal ability and processing capacity of such as semiconductor chip production equipment and the equipment of data-storage system Increase, heat is being stepped up caused by the equipment, so that the temperature of equipment also uprises.It is well known that equipment is in temperature Operating efficiency in the case that degree is high would generally step-down, and easily produce failure and service life reduction.In order to ensure the work of equipment Making efficiency will not reduce and avoid producing equipment fault, in this kind of equipment for producing huge heat, generally use refrigeration system The temperature of equipment is maintained in normal working range.
Refrigeration system generally includes refrigeration machine, chilled water pump, cooling tower and cooling water pump.Pass through analysis, refrigeration machine The temperature (that is, the temperature set-point of refrigeration machine) of caused chilled water is higher, and the temperature of the condensed water of cooling tower is lower, and The flow velocity of chilled water is higher, and the cooling effectiveness of refrigeration system is higher.Therefore, the temperature set-point of refrigeration machine is determined to become influence The key factor of the cooling effectiveness of refrigeration system.
In existing scheme, the temperature set-point of refrigeration machine is typically using the fixed value manually set, when refrigeration machine When actual working state changes, it is impossible to temperature set-point is adjusted accordingly, so that refrigeration system can not be efficient Ground works.
The content of the invention
In view of the above problems, this application provides it is a kind of be used for determine refrigeration machine temperature set-point method, apparatus and System.Using this method, apparatus and system, determine to freeze by the cold load value based on refrigeration system and comprehensive coefficient of performance The temperature set-point of machine, the cooling effectiveness of refrigeration system can be effectively improved.
According to the one side of the application, there is provided a kind of temperature set-point for being used to determine the refrigeration machine in refrigeration system Method, including：Obtain the initial cold load value of the refrigeration system；And based on acquired initial cold load value and institute The comprehensive coefficient of performance of refrigeration system is stated to determine the temperature set-point of the refrigeration machine.
Preferably, in an example of above-mentioned aspect, based on acquired initial cold load value and the refrigeration system The comprehensive coefficient of performance of system determines that the temperature set-point of the refrigeration machine can include：The refrigeration is adjusted in the following manner The temperature set-point of machine, until there is the temperature set-point as comprehensive coefficient of performance flex point：Based on the current of temperature set-point Adjustment direction and current adjusting step calculate current temperature setpoint；The refrigeration system is obtained to set in the Current Temperatures The current composite coefficient of performance under point；Upper one obtained using the acquired current composite coefficient of performance, upper adjustment process is comprehensive The coefficient of performance and the additional comprehensive coefficient of performance of additional adjustment process acquisition are closed, judges the temperature set-point of upper adjustment process Whether it is comprehensive coefficient of performance flex point, wherein, the additional adjustment process is less than in the acquired current composite coefficient of performance The adjustment process carried out during a upper comprehensive coefficient of performance according to the direction opposite with current adjustment direction, wherein, described When a upper comprehensive coefficient of performance is than the current composite coefficient of performance and all big additional comprehensive coefficient of performance, described upper one adjusted The temperature set-point of journey is determined as comprehensive coefficient of performance flex point, and the temperature set-point of an adjustment process is not comprehensive on described When closing coefficient of performance flex point, based on the current composite coefficient of performance, a upper comprehensive coefficient of performance and the additional synthesis The coefficient of performance determines the current of next adjustment process to determine the current adjustment direction of next adjustment process according to pre-defined rule Adjusting step；The temperature set-point as comprehensive coefficient of performance flex point is defined as to the temperature set-point of the refrigeration machine.
Preferably, in an example of above-mentioned aspect, the adjusting step of the additional adjustment process is the current tune K times of synchronizing length, wherein, 1 ＜ k≤2.
Preferably, in an example of above-mentioned aspect, based on the current composite coefficient of performance, described upper one comprehensive Can coefficient and the additional comprehensive coefficient of performance determine that the current adjustment direction of next adjustment process can include：Work as described When preceding comprehensive coefficient of performance is not less than a upper comprehensive coefficient of performance, using the current adjustment direction as next adjustment process Current adjustment direction, or a comprehensive coefficient of performance is equal to the current composite coefficient of performance and no more than described on described During additional comprehensive coefficient of performance, the current adjustment side using the adjustment direction of the additional adjustment process as next adjustment process To.
Preferably, in an example of above-mentioned aspect, the pre-defined rule include it is following in one kind：Keep current to adjust Synchronizing length is constant；The current adjusting step of next adjustment process is determined based on the wheel number of adjustment process and current adjusting step.
Preferably, in an example of above-mentioned aspect, in the current adjustment direction based on temperature set-point and current tune Synchronizing length is come after calculating current temperature setpoint, methods described can also include：The refrigeration system is obtained in the current temperature The current cold load value spent under set point, and the pre-defined rule include：Based on the current cold load value with making a reservation for cold bear The difference between threshold value is carried to determine the current adjusting step of next adjustment process.
Preferably, in an example of above-mentioned aspect, based on acquired initial cold load value and the refrigeration system The comprehensive coefficient of performance of system determines that the temperature set-point of the refrigeration machine can include：Acquisition and institute from data memory module Comprehensive coefficient of performance peak value corresponding to the initial cold load value obtained, wherein, the cold load value and comprehensive coefficient of performance peak value It is stored in association in the data memory module；The temperature set-point of the refrigeration machine is adjusted in the following manner, until The comprehensive coefficient of performance of the refrigeration system reaches the comprehensive coefficient of performance peak value：Current adjustment side based on temperature set-point To calculating current temperature setpoint with current adjusting step；The refrigeration system is obtained under the current temperature setpoint Comprehensive coefficient of performance；When acquired comprehensive coefficient of performance is not up to the comprehensive coefficient of performance peak value, based on acquired The difference of comprehensive coefficient of performance and the comprehensive coefficient of performance peak value adjusts the adjustment direction of temperature set-point and adjusting step, Current adjustment direction and current adjusting step as next adjustment process；And the comprehensive coefficient of performance by the refrigeration system Corresponding temperature set-point is defined as the temperature set-point of the refrigeration machine when reaching the comprehensive coefficient of performance peak value.
Preferably, in an example of above-mentioned aspect, the refrigeration system is obtained under the current temperature setpoint Comprehensive coefficient of performance can include：Obtain electricity of each equipment under the current temperature setpoint in the refrigeration system The refrigerating capacity of power and the refrigeration system under the current temperature setpoint；And based on acquired each equipment The refrigerating capacity of electrical power and the acquired refrigeration system, the refrigeration system is calculated under the current temperature setpoint Comprehensive coefficient of performance.
Preferably, in an example of above-mentioned aspect, obtaining the initial cold load value of the refrigeration system can include： Obtain the opening value of each temperature control valve in the refrigeration system via the detection of cold load detection means；And it will be obtained Maximum opening value in the opening value of each temperature control valve taken, it is defined as the initial cold load value of the refrigeration system.
According to the another aspect of the application, there is provided a kind of temperature set-point for being used to determine the refrigeration machine in refrigeration system Device, including：Cold load acquiring unit, for obtaining the initial cold load value of the refrigeration system；And determining unit, use In determining the temperature of the refrigeration machine based on the comprehensive coefficient of performance of acquired initial cold load value and the refrigeration system Spend set point.
Preferably, in an example of above-mentioned aspect, the determining unit can include：Adjusting module, for according to Following manner adjusts the temperature set-point of the refrigeration machine, until there is the temperature set-point as comprehensive coefficient of performance flex point： Current adjustment direction and current adjusting step based on temperature set-point calculate current temperature setpoint；Obtain the refrigeration system The current composite coefficient of performance of the system under the current temperature setpoint；Utilize the acquired current composite coefficient of performance, upper one The additional comprehensive coefficient of performance that the upper comprehensive coefficient of performance and additional adjustment process that adjustment process obtains obtain, judges upper one Whether the temperature set-point of adjustment process is comprehensive coefficient of performance flex point, wherein, the additional adjustment process is acquired The current composite coefficient of performance is less than what is carried out during a upper comprehensive coefficient of performance according to the direction opposite with current adjustment direction Adjustment process, wherein, a comprehensive coefficient of performance is than the current composite coefficient of performance and additional comprehensive coefficient of performance on described When all big, the temperature set-point of the upper adjustment process is determined as comprehensive coefficient of performance flex point, an adjustment on described When the temperature set-point of process is not comprehensive coefficient of performance flex point, based on the current composite coefficient of performance, a upper synthesis The coefficient of performance and the additional comprehensive coefficient of performance determine the current adjustment direction of next adjustment process, and according to pre-defined rule Determine the current adjusting step of next adjustment process；Determining module, for using the temperature as comprehensive coefficient of performance flex point Set point is defined as the temperature set-point of the refrigeration machine.
Preferably, in an example of above-mentioned aspect, the adjusting module is used for：In the current composite coefficient of performance During not less than a upper comprehensive coefficient of performance, the current adjustment side using the current adjustment direction as next adjustment process To, or a comprehensive coefficient of performance is more than the current composite coefficient of performance and is not more than the additional combination property on described During coefficient, the current adjustment direction using the adjustment direction of the additional adjustment process as next adjustment process.
Preferably, in an example of above-mentioned aspect, the adjusting module is used for：Based on the current of temperature set-point Adjustment direction and current adjusting step after calculating current temperature setpoint, obtain the refrigeration system and set in the Current Temperatures Current cold load value under fixed point, and the pre-defined rule include：Based on the current cold load value and predetermined cold load threshold Difference between value determines the current adjusting step of next adjustment process.
Preferably, in an example of above-mentioned aspect, the determining unit can include：Data memory module, it is used for Cold load value and comprehensive coefficient of performance peak value are stored in association；Comprehensive coefficient of performance peak value acquisition module, for from the number According to acquisition comprehensive coefficient of performance peak value corresponding with acquired initial cold load value in memory module；Adjusting module, for by The temperature set-point of the refrigeration machine is adjusted according to following manner, until the comprehensive coefficient of performance of the refrigeration system reaches described comprehensive Close coefficient of performance peak value：Current adjustment direction and current adjusting step based on temperature set-point set to calculate Current Temperatures Point；Obtain comprehensive coefficient of performance of the refrigeration system under the current temperature setpoint；In acquired combination property system When number is not up to the comprehensive coefficient of performance peak value, based on acquired comprehensive coefficient of performance and the comprehensive coefficient of performance peak value Difference adjust the adjustment direction of temperature set-point and adjusting step, as next adjustment process current adjustment direction and work as Preceding adjusting step；And determining module, for the comprehensive coefficient of performance of the refrigeration system to be reached into the comprehensive coefficient of performance Corresponding temperature set-point is defined as the temperature set-point of the refrigeration machine during peak value.
Preferably, in an example of above-mentioned aspect, the adjusting module is used for：Obtain each in the refrigeration system Electrical power and the refrigeration system of the individual equipment under the current temperature setpoint are under the current temperature setpoint Refrigerating capacity；And electrical power and the refrigerating capacity of the acquired refrigeration system based on acquired each equipment, calculate Comprehensive coefficient of performance of the refrigeration system under the current temperature setpoint.
Preferably, in an example of above-mentioned aspect, the cold load acquiring unit can include：Opening value obtains mould Block, for obtaining the opening value of each temperature control valve in the refrigeration system via the detection of cold load detection means；With And cold load determining module, for by the maximum opening value in the opening value of acquired each temperature control valve, being defined as institute State the initial cold load value of refrigeration system.
According to the another aspect of the application, there is provided a kind of control device, including：One or more processors, it is and described The memory of one or more processors coupling, the memory storage have instruction, when the instruction is one or more of During computing device so that one or more of computing devices are used to determine the refrigeration machine in refrigeration system as described above Temperature set-point method.
Preferably, in an example of above-mentioned aspect, the control device can also include：Cold load measuring unit, For measuring the cold load value of refrigeration system.
According to the another aspect of the application, there is provided a kind of refrigeration system, including：Refrigeration machine, for producing refrigeration system The chilled water needed for terminal device serviced；Water circulating pipe is freezed, with the refrigeration machine, the chilled water pump and the end End equipment is connected；Chilled water pump, for being supplied to chilled water caused by the refrigeration machine via the freezing water circulating pipe The terminal device；Cooling tower, for by heat dissipation caused by the terminal device into environment；Cooling water circulation pipe Road, it is connected with the cooling tower, the refrigeration machine and cooling water pump；Cooling water pump, for via the cooling water circulation pipeline To provide cooling water circulation for the cooling tower and the refrigeration machine；It is as described above to be used to determine that the temperature of the refrigeration machine is set The control device of fixed point；And cold load measuring unit, for measuring the cold load value of the refrigeration system.
Using the present processes, apparatus and system, pass through cold load value and comprehensive coefficient of performance based on refrigeration system To determine the temperature set-point of refrigeration machine, the cooling effectiveness of refrigeration system can be effectively improved.
Using the present processes, apparatus and system, by using multiple adjustment process, and during each adjustment The combination property system that comprehensive coefficient of performance based on the refrigeration system under current temperature setpoint is obtained with upper adjustment process Comprehensive coefficient of performance acquired in several and additional adjustment process is compared to whether temperature set point is combination property Coefficient flex point, the temperature set-point of refrigeration machine is thereby determined that, so as to realize that the intelligence to the temperature set-point of refrigeration machine is controlled System.
Using the present processes, apparatus and system, by using multiple adjustment process, and during each adjustment Comparison between comprehensive coefficient of performance and pre-set peak value based on the refrigeration system under current temperature setpoint determines whether to need Adjusted next time, and when needing to adjust next time, based on the comparison come determine adjustment direction next time and Adjusting step, it is possible thereby to realize the intelligent control to the temperature set-point of refrigeration machine.
Brief description of the drawings
By referring to following accompanying drawing, it is possible to achieve further understood for the nature and advantages of present disclosure. In accompanying drawing, similar assembly or feature can have identical reference.
Fig. 1 shows the structured flowchart of the refrigeration system according to the application；
Fig. 2 shows the structured flowchart of an example of the control device according to the application；
Fig. 3 shows the flow for being used to determine an example of the method for the temperature set-point of refrigeration machine according to the application Figure；
Fig. 4 shows the flow for being used to determine another example of the method for the temperature set-point of refrigeration machine according to the application Figure；
Fig. 5 shows the structured flowchart of another example of the control device according to the application；
Fig. 6 shows the flow for being used to determine another example of the method for the temperature set-point of refrigeration machine according to the application Figure；
Fig. 7 shows the structured flowchart of another example of the control device according to the application；With
Fig. 8 shows the block diagram for being used to determine the control device of the temperature set-point of refrigeration machine according to the application.
Embodiment
Theme described herein is discussed referring now to example embodiment.It should be understood that discuss these embodiments only It is that be better understood when in order that obtaining those skilled in the art so as to realize theme described herein, is not to claim The limitation of the protection domain, applicability or the example that are illustrated in book.The protection domain of present disclosure can not departed from In the case of, the function of element and arrangement discussed is changed.Each example can be as needed, omit, substitute or Add various processes or component.For example, described method can perform according to described order different, with And each step can be added, omits or combine.In addition, the feature described by some relative examples is in other examples It can be combined.
As used in this article, term " comprising " and its modification represent open term, are meant that " including but is not limited to ". Term "based" represents " being based at least partially on ".Term " one embodiment " and " embodiment " expression " at least one implementation Example ".Term " another embodiment " expression " at least one other embodiment ".Term " first ", " second " etc. may refer to not Same or identical object.Other definition can be included below, it is either clear and definite or implicit.It is unless bright in context Really indicate, otherwise the definition of a term is consistent throughout the specification.
Herein, term " temperature set-point " refers to the leaving water temperature point in refrigeration machine.
The side for being used to determine the temperature set-point of the refrigeration machine in refrigeration system of the application is described presently in connection with accompanying drawing Method, the embodiment of apparatus and system.
Fig. 1 shows the structured flowchart of the refrigeration system 10 according to the application.As shown in figure 1, refrigeration system 10 includes system Cold 110, chilled water pump 120, cooling tower 130, cooling water pump 140, control device 150, freezing water circulating pipe 160 and cooling Water circulating pipe 170.
Refrigeration machine 110 is used to produce the chilled water needed for the terminal device that refrigeration system is serviced.Generally, refrigeration machine 110 Including evaporator and condenser.Freezing water circulating pipe 160 is connected with refrigeration machine 110, chilled water pump 120 and terminal device 200. Here, terminal device 200 refers to the equipment to be cooled, such as semiconductor chip production equipment, the storage device of data center Deng.Chilled water pump 120 is used to be supplied to terminal to set via freezing water circulating pipe 160 chilled water caused by refrigeration machine 110 Standby 200, to be cooled down to terminal device 200.
Heat caused by terminal device 200 returns to refrigeration machine 110 via water circulating pipe 160 (chilled water return pipe) Evaporator, carried out in evaporator with refrigerant after heat exchange by refrigerant by heat take to the condenser of refrigeration machine 110 with Heat exchange is carried out with cooling water, heat exchange is carried out with outside air so as to which heat finally takes cooling tower 130 to by condensed water.Cooling Tower 130 is used for the heat dissipation of self terminal equipment in future 200 into environment.It is cooling water circulation pipeline 170 and refrigeration machine 110, cold But tower 130 is connected with cooling water pump 140.It is the cold of refrigeration machine 110 that cooling water pump 140, which is used for via cooling water circulation pipeline 170, Condenser and cooling tower 130 provide cooling water circulation.Control device 150 is used for the actual cold load value of detecting system (for example, temperature The aperture of control valve), and the refrigerating capacity and power consumption of detection refrigeration system, so as to calculate the comprehensive energy consumption system of refrigeration system Number, and the temperature set-point of the refrigeration machine under actual cold load value is determined based on predetermined algorithm.
In addition, refrigeration system 10 can also include cold load detection means 180, it is connected with control device 150, for detecting The cold load value of refrigeration system.Control device 150 obtains detected cold load value from cold load detection means.
Refrigeration system 10 can also include comprehensive coefficient of performance detection means 190, each in refrigeration system 10 for detecting Electrical power and refrigeration system 10 refrigerating capacity under current temperature setpoint of the individual equipment under current temperature setpoint.It is comprehensive Coefficient of performance detection means 190 can be realized using electrical power monitoring modular and refrigerating capacity monitoring modular.More specifically, make Cold monitoring modular is used for the water outlet of flow and refrigeration machine and the temperature difference of backwater for monitoring the chilled water in refrigeration system, and base Refrigerating capacity is calculated in the flow and the temperature difference that are monitored.In one example, comprehensive coefficient of performance detection means 190 can be with Comprehensive coefficient of performance is calculated based on the electrical power and refrigerating capacity that are detected.In this case, control device 150 is from synthesis Coefficient of performance detection means 190 obtains comprehensive coefficient of performance.In another example, comprehensive coefficient of performance detection means 190 can be with Without comprehensive coefficient of performance computing function.In this case, control device 150 is from comprehensive coefficient of performance detection means 190 Obtain detected electronic rate and refrigerating capacity, and comprehensive coefficient of performance is calculated based on the electrical power and refrigerating capacity that are detected.
Fig. 2 shows the structured flowchart of an example of the control device 150 according to the application.As shown in Fig. 2 control dress Putting 150 includes cold load acquiring unit 151 and determining unit 153.
Cold load acquiring unit 151 is used for the initial cold load value for obtaining refrigeration system.The cold load refers to refrigeration system The heat distributed in system, it can be characterized using various ways.For example, the cold load can be utilized in refrigeration system The aperture of temperature control valve characterizes.The aperture can be represented with percentage.In this case, cold load acquiring unit 151 can obtain the aperture of the temperature control valve in the refrigeration system.The temperature control valve is arranged on freezing water-circulating pipe The end in road 160, for controlling the flow of the chilled water in refrigeration system 10.
In one example, cold load acquiring unit 151 can be realized using receiving unit.In this case, if The cold load value that the cold load detection means 180 in refrigeration system 10 detects refrigeration system 10 is put, then, cold load obtains single Member 151 receives detected cold load value from cold load detection means 180.For example, cold load detection means 180 can be set Valve opening measurement apparatus near temperature control valve, the valve opening for measurement temperature control valve.In refrigeration system bag In the case of including multiple temperature control valves, the cold load detection means can also be selected from measured the multiple opening value Select initial cold load value of the opening value of maximum as refrigeration system 10.
In addition, in another example of the application, cold load detection means 180 can also not include described in measured Function of the opening value of maximum as the cold load value of refrigeration system 10 is selected in multiple opening values.In this case, it is cold negative Opening value acquisition module (not shown) and cold load determining module (not shown) can be included by carrying acquiring unit 151.The aperture Value acquisition module is used to obtain opening for each temperature control valve in the refrigeration system 10 detected via cold load detection means 180 Angle value.The cold load determining module is used for the maximum opening value in the opening value of acquired each temperature control valve, really It is set to the initial cold load value of refrigeration system 10.
Determining unit 153 is used for the synthesis of initial cold load value and refrigeration system 10 based on acquired refrigeration system 10 The coefficient of performance determines the temperature set-point of the refrigeration machine.The comprehensive coefficient of performance of refrigeration system refers to the refrigeration of refrigeration system Ratio between amount and power consumption (power consumption for including refrigeration machine, chilled water pump, cooling water pump, cooling tower).The ratio is higher, Illustrate that the synthesis refrigerating efficiency of refrigeration system is higher.For example, in one example, temperature set-point computation model can be created, And come using the history cold load data of refrigeration system, comprehensive coefficient of performance and resulting historical temperature set point number evidence to institute The temperature set-point computation model of establishment is trained, to optimize.Then, it is determined that unit 153 utilizes created temperature Set-point calculation model determines that the temperature of the refrigeration machine is set come the initial cold load value based on the acquired refrigeration system Fixed point.
Fig. 3 shows the flow for being used to determine an example of the method for the temperature set-point of refrigeration machine according to the application Figure.As shown in figure 3, in S310, cold load acquiring unit obtains the initial cold load value of refrigeration system.Obtaining the refrigeration system After the initial cold load value of system, in S320, initial cold load value and the refrigeration system based on the acquired refrigeration system The comprehensive coefficient of performance of system determines the temperature set-point of the refrigeration machine.
Using the temperature set-point determining device shown in Fig. 2, by the initial cold load value based on refrigeration system and comprehensive The coefficient of performance is closed to determine the temperature set-point of refrigeration machine, the cooling effectiveness of refrigeration system can be effectively improved.
Fig. 4 shows the flow for being used to determine another example of the method for the temperature set-point of refrigeration machine according to the application Figure.
As shown in figure 4, first, in S410, the initial cold load value of refrigeration system is obtained.Obtaining the initial of refrigeration system After cold load value, in S420, the initial cold load value based on acquired refrigeration system, the temperature setting of the refrigeration machine is determined The initial adjustment direction of point and initial adjusting step.
Here, the initial adjustment direction of the temperature set-point is initial cold negative based on the acquired refrigeration system Load value and preset cold load threshold value (for example, in the case where cold load is aperture, 95%) default cold load threshold value is determines 's.For example, when initial cold load value is more than default cold load threshold value, the initial adjustment direction of temperature set point is downward Adjustment, i.e. the direction that temperature set-point reduces；And when initial cold load value is less than default cold load threshold value, temperature The initial adjustment direction of set point is to adjust upward, i.e. the elevated direction of temperature set-point.
In addition, initial adjusting step can be determined based on the difference of initial opening value and default cold load threshold value.It is preferred that Ground, the initial adjusting step can be linearly proportional with the difference.For example, it is assumed that difference, within 5%, adjustment walks A length of 0.15 degree；For difference between 5% and 10%, adjusting step is 0.3 degree；Difference is between 10% and 15%, adjusting step For 0.45 degree；For difference between 15% and 20%, adjusting step is 0.6 degree；Between 20% and 25%, adjusting step is difference 0.75 degree；For difference between 25% and 30%, adjusting step is 0.9 degree；Between 30% and 35%, adjusting step is difference 1.05 degree；For difference between 35% and 40%, adjusting step is 1.2 degree；Between 40% and 45%, adjusting step is difference 1.35 degree；For difference between 45% and 50%, adjusting step is 1.5 degree, etc..It is described first in other examples of the application Beginning adjusting step can also be with the difference into other predefined function relations.
After the initial adjustment direction of temperature set-point and initial adjusting step is determined as above out, perform from S430 to S470 Circulation adjustment process.First, made in S430, current adjustment direction and current adjusting step based on temperature set-point to calculate The current temperature setpoint of cold.For example, it is assumed that the temperature set-point before adjustment is TBefore adjustment, current adjustment direction is temperature setting The increased direction of point, current adjusting step are 0.3 °, then the temperature set-point after adjusting is TBefore adjustment+0.3.Temperature is carried out in first time When spending set point adjustment, temperature set-point adjustment process is based on initial temperature set-point, initial adjustment direction and initial Adjusting step is carried out.Initial temperature set-point can be predetermined temperature set point, such as 5 °.
After the current temperature setpoint of refrigeration machine is calculated, in S433, obtain refrigeration system 10 and set in Current Temperatures Current cold load value under point.Here, the acquisition process of current cold load value can be above with reference to described in cold load acquiring unit. Then, in S435, whether acquired current cold load value is judged more than the first predetermined threshold value, for example, 95%.It is being judged as surpassing When crossing the first predetermined threshold value, proceed to S437.In S437, adjustment direction is adjusted to the direction of temperature set-point reduction, and New adjusting step is determined according to pre-defined rule.In the example of the application, the pre-defined rule can be based on current Difference between cold load value and the first predetermined threshold value determines new adjusting step.In another example of the application, new It is constant that adjusting step can also be to maintain current adjusting step.Or the pre-defined rule can be the wheel based on adjustment process Count with current adjusting step to determine the current adjusting step of next adjustment process.For example, can by current adjusting step with Adjustment wheel number is multiplied to obtain the current adjusting step of next adjustment process for the function of parameter.The function can be linear letter Number or nonlinear function.Then, S433 is returned to.
When acquired current cold load value is not less than the first predetermined threshold, proceed to S440.In S440, refrigeration is obtained The current composite coefficient of performance (COPn) of the system 10 under current temperature setpoint.Specifically, can be by detecting the refrigeration Electrical power and the refrigeration system of each equipment under current temperature setpoint in system is under current temperature setpoint Refrigerating capacity, the electrical power of each equipment and the refrigerating capacity of refrigeration system that are then based on being detected calculate combination property Coefficient.
Then, in S443, judge the current composite coefficient of performance whether not less than comprehensive acquired in upper adjustment process Can coefficient (that is, upper comprehensive coefficient of performance COPn-1), i.e. COPnWhether COP is not less thann-1.If it is not, then proceed to S465.In S465, current adjustment direction is determined as to the current adjustment direction of next adjustment process, and according to pre-defined rule It is determined that current adjusting step of the new adjusting step as next adjustment process.The new adjusting step can be according to reference Pre-defined rule described in S437 determines.Then, S430 is proceeded to perform next adjustment process.
When judging that the current composite coefficient of performance is less than a upper comprehensive coefficient of performance in S443, proceed to S445.In S445, It is determined that the adjustment direction and adjusting step of additional adjustment process, and calculate the temperature set-point during additional adjustment.Specifically Ground, the adjustment direction opposite with current adjustment direction is determined as to the adjustment direction of additional adjustment process, and will be than current The bigger adjusting step of adjusting step is determined as the adjusting step of additional adjustment process, for example, can be by K times of current adjustment Step-length is determined as the adjusting step of additional adjustment process, wherein, 1 ＜ k≤2.Then, based on identified adjustment direction and tune Synchronizing is grown to calculate the temperature set-point of additional adjustment process.Then, in S447, refrigeration system is obtained in the temperature calculated The comprehensive coefficient of performance spent under set point, COPa.
After COPa is obtained as above, in S450, COP is judgedn-1Whether COPa is more than.If it is not greater, then proceed to S460.In S460, the adjustment direction of additional adjustment process is determined as to the current adjustment direction of next adjustment process, and really Current adjusting step of the fixed new adjusting step as next adjustment process.The new adjusting step can be according to above-mentioned reference Pre-defined rule described in S437 determines.Then, S430 is proceeded to perform next adjustment process.
If COPn-1More than COPa, then proceed to S470.In S470, it is determined that the temperature set-point of upper adjustment process is Comprehensive coefficient of performance flex point, and the temperature set-point of upper one adjustment process is defined as the temperature set-point of the refrigeration machine.This In, it is described when a comprehensive coefficient of performance on described is than the current composite coefficient of performance and all big additional comprehensive coefficient of performance The temperature set-point of upper adjustment process is determined to be comprehensive coefficient of performance flex point.
Preferably, methods described can also include S480.In S480, the cold load value of refrigeration system is monitored, and is judged Whether the change of cold load value is more than the second predetermined threshold (for example, 5%).If be no more than, continue to monitor.If it does, S420 is then returned to, carries out next adjustment process.
Moreover it is preferred that in the other embodiments of the application, S435 and S437 can be deleted, or delete S433, S435 and S437.
Using the above method, by using multiple adjustment process, and set during each adjustment based on Current Temperatures The comprehensive coefficient of performance and additional adjustment that the comprehensive coefficient of performance of refrigeration system under fixed point is obtained with upper adjustment process Comprehensive coefficient of performance acquired in process is compared to whether temperature set point is comprehensive coefficient of performance flex point, so as to To realize the intelligent control to the temperature set-point of refrigeration machine.
Fig. 5 shows the structured flowchart of another example of the control device 150 ' according to the application.As shown in figure 5, control Device 150 ' includes cold load acquiring unit 151 and determining unit 153 '.Determining unit 153 ' is including adjusting module 1533 and really Cover half block 1539.
Cold load acquiring unit 151 obtains the initial cold load value of refrigeration system.Adjusting module 1533 is used for according to following Mode adjusts the temperature set-point of the refrigeration machine, until there is the temperature set-point as comprehensive coefficient of performance flex point：It is based on The current adjustment direction of temperature set-point and current adjusting step calculate current temperature setpoint；The refrigeration system is obtained to exist The current composite coefficient of performance under current temperature setpoint；Utilize the acquired current composite coefficient of performance, upper adjustment process The additional comprehensive coefficient of performance that the upper comprehensive coefficient of performance obtained and additional adjustment process obtain, judge upper adjustment process Temperature set-point whether be comprehensive coefficient of performance flex point, wherein, the additional adjustment process is in acquired current composite The coefficient of performance is less than the adjustment process carried out during a upper comprehensive coefficient of performance according to the direction opposite with current adjustment direction, Wherein, when a comprehensive coefficient of performance on described is than the current composite coefficient of performance and all big additional comprehensive coefficient of performance, institute The temperature set-point for stating an adjustment process is determined as comprehensive coefficient of performance flex point, the temperature of an adjustment process on described When set point is not comprehensive coefficient of performance flex point, based on the current composite coefficient of performance, a upper comprehensive coefficient of performance and The additional comprehensive coefficient of performance determines current adjust to determine the current adjustment direction of next adjustment process according to pre-defined rule Synchronizing is grown.The pre-defined rule can be above with reference to described in Fig. 4.
Specifically, when the temperature set-point of an adjustment process on described is not comprehensive coefficient of performance flex point, based on described The current composite coefficient of performance, a upper comprehensive coefficient of performance and the additional comprehensive coefficient of performance determine next adjustment process Current adjustment direction can include：, will when the current composite coefficient of performance is not less than a comprehensive coefficient of performance on described The current current adjustment direction of the adjustment direction as next adjustment process, or a comprehensive coefficient of performance is more than on described The current composite coefficient of performance and when being not more than the additional comprehensive coefficient of performance, by the adjustment side of the additional adjustment process To the current adjustment direction as next adjustment process.
As shown in figure 5, in one example, adjusting module 1533 can include calculating sub module 1534, combination property system Number acquisition submodule 1535, flex point judge module 1536 and adjustment submodule 1537.Calculating sub module 1534 is used for for each Adjustment process, current adjustment direction, current adjusting step based on temperature set-point calculate current temperature setpoint.
Comprehensive coefficient of performance acquisition submodule 1533 is used for the synthesis for obtaining the refrigeration system under current temperature setpoint The coefficient of performance.For example, comprehensive coefficient of performance detection means 190 can be included in refrigeration system 10.Detected in comprehensive coefficient of performance In the case that device 190 only has electronic rate and refrigerating capacity detection function, comprehensive coefficient of performance acquisition submodule 1533 can be with Realized using receiving submodule and processing submodule.Receiving submodule is used to receive from comprehensive coefficient of performance detection means 190 Electrical power measurements and refrigeration measurement, then, processing submodule are measured based on the electrical power measurements and refrigeration received Magnitude calculation goes out comprehensive coefficient of performance.In another example of the application, comprehensive coefficient of performance computing function can also be by integrating Coefficient of performance detection means 190 realizes that in this case, comprehensive coefficient of performance acquisition submodule 1533 can only have Receive capabilities.
Flex point judging submodule 1536 is used to utilize the acquired current composite coefficient of performance, upper adjustment process to obtain The additional comprehensive coefficient of performance that a upper comprehensive coefficient of performance and additional adjustment process obtain, judge the temperature of upper adjustment process Whether set point is comprehensive coefficient of performance flex point.Wherein, the additional adjustment process is in acquired current composite performance demands Number is less than the adjustment process carried out during a upper comprehensive coefficient of performance according to the direction opposite with current adjustment direction, and attached The adjusting step for adding adjustment process is the adjusting step bigger than current adjusting step, for example, can walk K times of current adjustment The long adjusting step for being determined as additional adjustment process, wherein, 1 ＜ k≤2.In addition, a comprehensive coefficient of performance compares institute on described When stating the current composite coefficient of performance and all big additional comprehensive coefficient of performance, flex point judging submodule 1536 adjusted described upper one The temperature set-point of journey is determined as comprehensive coefficient of performance flex point.
It is not comprehensive coefficient of performance flex point to adjust submodule 1537 to be used for a temperature set-point for adjusting process on described When, determined based on the current composite coefficient of performance, a upper comprehensive coefficient of performance and the additional comprehensive coefficient of performance The current adjustment direction of next adjustment process, and determine current adjusting step according to pre-defined rule.Preferably, adjusting module 1533 Cold load acquisition submodule (not shown) can also be included, it is current cold under current temperature setpoint for obtaining refrigeration system Load value.In this case, adjusting submodule 1535 can be preset based on acquired current cold load value and described first The difference of threshold value (for example, 95%) adjusts the current adjusting step of temperature set-point.Determining module 1539 is used for the work It is defined as the temperature set-point of the refrigeration machine for the temperature set-point of comprehensive coefficient of performance flex point.
Moreover it is preferred that control device 150 ' can also include judging unit 155, for judging acquired refrigeration system Whether more than the second predetermined threshold value, it 5% (is temperature in cold load that second predetermined threshold value is, for example, to the cold load value changes of system In the case of the aperture of control valve).When the cold load of acquired refrigeration system changes more than the second predetermined threshold value, hold again Temperature set-point determination process performed by row determining unit 153.
Fig. 6 shows the flow for being used to determine another example of the method for the temperature set-point of refrigeration machine according to the application Figure.
As shown in fig. 6, first, in S410, the initial cold load value of refrigeration system is obtained.Obtaining the initial of refrigeration system After cold load value, in S415, combination property system corresponding with acquired initial cold load value is obtained from data memory module Number peak value, wherein, the cold load value is stored in the data memory module in association with comprehensive coefficient of performance peak value.So Afterwards, in S420, the initial cold load value based on acquired refrigeration system, determine the refrigeration machine temperature set-point it is initial Adjustment direction and initial adjusting step.
After initial adjustment direction and initial adjusting step is determined, in S430, the current adjustment based on temperature set-point Direction and current adjusting step calculate the current temperature setpoint of refrigeration machine.Here, when adjusting first time, the temperature in S430 The current adjustment direction of degree set point is the initial adjustment direction of temperature set-point, and the current adjusting step of temperature set-point It is initial adjusting step, and is that above-mentioned calculating is carried out based on initial temperature set-point.
Then, in S440, the current composite coefficient of performance of the refrigeration system 10 under current temperature setpoint is obtained.Then, In S450 ', judge whether the current composite coefficient of performance reaches comprehensive coefficient of performance peak value.If not up to, in S460 ', base The adjustment direction of temperature set-point and adjusting step are adjusted in the difference of the current composite coefficient of performance and the pre-set peak value, is made To adjust the current adjustment direction of process and current adjusting step next time.Specifically, if the current composite coefficient of performance is more than Pre-set peak value, then the adjustment direction of next adjustment process is defined as to the direction of temperature set-point reduction, and it is if current comprehensive Close the coefficient of performance and be less than pre-set peak value, then the adjustment direction of next adjustment process is defined as the increased direction of temperature set-point. The determination of adjusting step can be determined based on pre-set peak value and the difference of the current composite coefficient of performance.Then, flow proceeds to Frame S430, is adjusted process next time.
If the comprehensive coefficient of performance of acquired refrigeration system reaches predetermined peak value, proceed to frame S470 '. S470 ', corresponding temperature set-point determines when the comprehensive coefficient of performance with the refrigeration system is reached into the pre-set peak value For the temperature set-point of the refrigeration machine.
Preferably, methods described can also include S480.In S480, the cold load value of refrigeration system is monitored, and is judged Whether the change of cold load value is more than the second predetermined threshold (for example, 5%).If be no more than, continue to monitor.If it does, S420 is then returned to, carries out next adjustment process.
Using the above method, by using multiple adjustment process, and set during each adjustment based on Current Temperatures Comparison between the comprehensive coefficient of performance and pre-set peak value of refrigeration system under fixed point determines the need for being adjusted next time It is whole, and when needing to adjust next time, adjustment direction next time and adjusting step, Ke Yishi are determined based on the comparison Now to the intelligent control of the temperature set-point of refrigeration machine.
Fig. 7 shows the structured flowchart of another example of the control device 150 " according to the application.
As shown in fig. 7, control device 150 " includes cold load acquiring unit 151 and determining unit 153 '.Cold load obtains Unit 151 is used for the initial cold load value for obtaining refrigeration system.Determining unit 153 ' includes peak value acquisition module 1531, adjustment mould Block 1533 ', determining module 1537 ' and data memory module 1539.
Data memory module 1539 is used to store cold load value and comprehensive coefficient of performance peak value in association.Peak value obtains mould Block 1531 is used to obtain comprehensive coefficient of performance peak corresponding with acquired initial cold load value from data memory module 1539 Value.Adjusting module 1533 ' is used for the temperature set-point for adjusting the refrigeration machine in the following manner, until the refrigeration system Comprehensive coefficient of performance reaches the comprehensive coefficient of performance peak value：Current adjustment direction and current adjustment based on temperature set-point walk The long temperature set-point to calculate after adjustment；Obtain comprehensive coefficient of performance of the refrigeration system under current temperature setpoint；Institute When the comprehensive coefficient of performance of acquisition is not up to the comprehensive coefficient of performance peak value, based on acquired comprehensive coefficient of performance and described The difference of comprehensive coefficient of performance peak value adjusts the adjustment direction of temperature set-point and adjusting step, as next adjustment process Current adjustment direction and current adjusting step.Determining module 1537 ' is used to reach the comprehensive coefficient of performance of the refrigeration system Corresponding temperature set-point is defined as the temperature set-point of the refrigeration machine during comprehensive coefficient of performance peak value.
As shown in fig. 7, in one example, adjusting module 1533 ' can include calculating sub module 1534, combination property system Number acquisition submodule 1535 and adjustment submodule 1536 '.Calculating sub module 1534 and comprehensive coefficient of performance acquisition submodule 1535 It is identical with the respective modules shown in Fig. 5, no longer describe herein.
Adjust submodule 1536 ' to be used for when acquired comprehensive coefficient of performance is not up to pre-set peak value, based on acquired Comprehensive coefficient of performance and the pre-set peak value adjust the adjustment direction of temperature set-point and adjusting step, as next adjustment The current adjustment direction of process and current adjusting step.Specifically, will if the current composite coefficient of performance is more than pre-set peak value The adjustment direction of next adjustment process is defined as the direction of temperature set-point reduction, and if the current composite coefficient of performance is less than Pre-set peak value, then the adjustment direction of next adjustment process is defined as the increased direction of temperature set-point.Next adjustment process Current adjusting step can be determined based on pre-set peak value and the difference of the current composite coefficient of performance.
Moreover it is preferred that control device 150 " can also include judging unit 155, for judging acquired refrigeration system Whether the cold load of system changes more than the second predetermined threshold value, and it 5% (is temperature control in cold load that second predetermined threshold value, which is, for example, In the case of the aperture of valve processed).When the cold load of acquired refrigeration system changes more than the second predetermined threshold value, re-execute Temperature set-point determination process performed by determining unit 153 '.
In this application, temperature set-point control device 150 can utilize computing device to realize.Fig. 8 is shown according to this The block diagram for being used to determine the control device 800 of the temperature set-point of the refrigeration machine in refrigeration system of application.According to a reality Example is applied, control device 800 can include one or more processors 802, and processor 802 is performed in computer-readable recording medium One or more computer-readable instructions of storage or coding in (that is, memory 804) are (that is, above-mentioned to realize in a software form Element).
In one embodiment, computer executable instructions are stored in memory 804, its cause when implemented one or Multiple processors 802：Obtain the initial cold load value of the refrigeration system；It is and first based on the acquired refrigeration system The comprehensive coefficient of performance of beginning cold load value and the refrigeration system determines the temperature set-point of the refrigeration machine.
It should be understood that the computer executable instructions stored in memory 804 cause one or more places when implemented Manage in each embodiment of the progress the application of device 802 above in association with Fig. 1-7 various operations described and function.
In addition, control device 800 can also include cold load measuring unit, for measuring the cold load in refrigeration system 10 Value.
According to one embodiment, there is provided a kind of program product of such as non-transitory machine readable media.It is described non-temporary When property machine readable media can have instruction (that is, the above-mentioned element realized in a software form), and the instruction, which is worked as, to be executable by a machine When so that machine is performed in each embodiment of the application above in association with Fig. 1-7 various operations described and function.
The embodiment illustrated above in conjunction with accompanying drawing describes exemplary embodiment, it is not intended that can realize Or fall into all embodiments of the protection domain of claims." exemplary " meaning of term used in whole this specification Taste " being used as example, example or illustration ", is not meant to than other embodiments " preferably " or " having advantage ".For offer pair The purpose of the understanding of described technology, embodiment include detail.However, it is possible in these no details In the case of implement these technologies.In some instances, it is public in order to avoid causing indigestion to the concept of described embodiment The construction and device known is shown in form of a block diagram.
The foregoing description of present disclosure is provided so that any those of ordinary skill in this area can realize or make Use present disclosure.To those skilled in the art, the various modifications carried out to present disclosure are apparent , also, can also be in the case where not departing from the protection domain of present disclosure, should by generic principles defined herein For other modifications.Therefore, present disclosure is not limited to examples described herein and design, but disclosed herein with meeting Principle and novel features widest scope it is consistent.

Claims (19)

1. a kind of method for being used to determine the temperature set-point of the refrigeration machine in refrigeration system, including：
Obtain the initial cold load value of the refrigeration system；And
The refrigeration machine is determined based on the comprehensive coefficient of performance of acquired initial cold load value and the refrigeration system Temperature set-point.
2. the method for claim 1, wherein based on the comprehensive of acquired initial cold load value and the refrigeration system The coefficient of performance is closed to determine that the temperature set-point of the refrigeration machine includes：
The temperature set-point of the refrigeration machine is adjusted in the following manner, until there is the temperature as comprehensive coefficient of performance flex point Set point：
Current adjustment direction and current adjusting step based on temperature set-point calculate current temperature setpoint；
Obtain the current composite coefficient of performance of the refrigeration system under the current temperature setpoint；
The upper comprehensive coefficient of performance and additional tune obtained using the acquired current composite coefficient of performance, upper adjustment process The additional comprehensive coefficient of performance of journey acquisition is had suffered, whether the temperature set-point for judging upper adjustment process is that comprehensive coefficient of performance turns Point, wherein, the additional adjustment process is to be less than a comprehensive coefficient of performance on described in the acquired current composite coefficient of performance When the adjustment process that is carried out according to the direction opposite with current adjustment direction, wherein, a comprehensive coefficient of performance compares institute on described When stating the current composite coefficient of performance and all big additional comprehensive coefficient of performance, the temperature set-point of the upper adjustment process is determined To be comprehensive coefficient of performance flex point,
When the temperature set-point of an adjustment process on described is not comprehensive coefficient of performance flex point, based on the current composite performance Coefficient, a upper comprehensive coefficient of performance and the additional comprehensive coefficient of performance determine the current adjustment side of next adjustment process To, and determine according to pre-defined rule the current adjusting step of next adjustment process；
The temperature set-point as comprehensive coefficient of performance flex point is defined as to the temperature set-point of the refrigeration machine.
3. method as claimed in claim 2, wherein, the adjusting step of the additional adjustment process is the current adjusting step K times, wherein, 1 ＜ k≤2.
4. method as claimed in claim 2, wherein, based on the current composite coefficient of performance, the upper combination property system Count with the additional comprehensive coefficient of performance to determine that the current adjustment direction of next adjustment process includes：
When the current composite coefficient of performance is not less than a comprehensive coefficient of performance on described, will the currently adjustment direction as The current adjustment direction of next adjustment process, or a comprehensive coefficient of performance is more than the current composite coefficient of performance on described And when being not more than the additional comprehensive coefficient of performance, using the adjustment direction of the additional adjustment process as next adjustment process Current adjustment direction.
5. method as claimed in claim 4, wherein, the pre-defined rule include it is following in one kind：
Keep current adjusting step constant；
The current adjusting step of next adjustment process is determined based on the wheel number of adjustment process and current adjusting step.
6. method as claimed in claim 2, wherein, in the current adjustment direction based on temperature set-point and current adjusting step After calculating current temperature setpoint, methods described also includes：
Obtain current cold load value of the refrigeration system under the current temperature setpoint, and the pre-defined rule bag Include：The current adjustment of next adjustment process is determined based on the current difference between cold load value and predetermined cold load threshold value Step-length.
7. the method for claim 1, wherein based on the comprehensive of acquired initial cold load value and the refrigeration system The coefficient of performance is closed to determine that the temperature set-point of the refrigeration machine includes：
Comprehensive coefficient of performance peak value corresponding with acquired initial cold load value is obtained from data memory module, wherein, institute Cold load value is stated to be stored in association in the data memory module with comprehensive coefficient of performance peak value；
The temperature set-point of the refrigeration machine is adjusted in the following manner, until the comprehensive coefficient of performance of the refrigeration system reaches The comprehensive coefficient of performance peak value：
Current adjustment direction and current adjusting step based on temperature set-point calculate current temperature setpoint；
Obtain comprehensive coefficient of performance of the refrigeration system under the current temperature setpoint；
When acquired comprehensive coefficient of performance is not up to the comprehensive coefficient of performance peak value, based on acquired combination property system Count with the difference of the comprehensive coefficient of performance peak value to adjust the adjustment direction of temperature set-point and adjusting step, as next tune It has suffered the current adjustment direction of journey and current adjusting step；And
Corresponding temperature set-point when the comprehensive coefficient of performance of the refrigeration system reached into the comprehensive coefficient of performance peak value It is defined as the temperature set-point of the refrigeration machine.
8. the method as described in claim 2 or 7, wherein, the refrigeration system is obtained under the current temperature setpoint Comprehensive coefficient of performance includes：
Obtain electrical power and the refrigeration system of each equipment in the refrigeration system under the current temperature setpoint Refrigerating capacity of the system under the current temperature setpoint；And
The refrigerating capacity of electrical power and the acquired refrigeration system based on acquired each equipment, calculates the refrigeration Comprehensive coefficient of performance of the system under the current temperature setpoint.
9. the method as described in any in claim 1 to 8, wherein, obtaining the initial cold load value of the refrigeration system includes：
Obtain the opening value of each temperature control valve in the refrigeration system via the detection of cold load detection means；And
By the maximum opening value in the opening value of acquired each temperature control valve, it is defined as the initial cold of the refrigeration system Load value.
10. a kind of device for being used to determine the temperature set-point of the refrigeration machine in refrigeration system, including：
Cold load acquiring unit, for obtaining the initial cold load value of the refrigeration system；And
Determining unit, determined for the comprehensive coefficient of performance based on acquired initial cold load value and the refrigeration system The temperature set-point of the refrigeration machine.
11. device as claimed in claim 10, wherein, the determining unit includes：
Adjusting module, for adjusting the temperature set-point of the refrigeration machine in the following manner, until occurring being used as combination property The temperature set-point of coefficient flex point：
Current adjustment direction and current adjusting step based on temperature set-point calculate current temperature setpoint；
Obtain the current composite coefficient of performance of the refrigeration system under the current temperature setpoint；
The upper comprehensive coefficient of performance and additional tune obtained using the acquired current composite coefficient of performance, upper adjustment process The additional comprehensive coefficient of performance of journey acquisition is had suffered, whether the temperature set-point for judging upper adjustment process is that comprehensive coefficient of performance turns Point, wherein, the additional adjustment process is to be less than a comprehensive coefficient of performance on described in the acquired current composite coefficient of performance When the adjustment process that is carried out according to the direction opposite with current adjustment direction, wherein, a comprehensive coefficient of performance compares institute on described When stating the current composite coefficient of performance and all big additional comprehensive coefficient of performance, the temperature set-point of the upper adjustment process is determined To be comprehensive coefficient of performance flex point,
When the temperature set-point of an adjustment process on described is not comprehensive coefficient of performance flex point, based on the current composite performance Coefficient, a upper comprehensive coefficient of performance and the additional comprehensive coefficient of performance determine the current adjustment side of next adjustment process To, and determine according to pre-defined rule the current adjusting step of next adjustment process；
Determining module, for the temperature set-point as comprehensive coefficient of performance flex point to be defined as to the temperature of the refrigeration machine Set point.
12. device as claimed in claim 11, wherein, the adjusting module is used for：
When the current composite coefficient of performance is not less than a comprehensive coefficient of performance on described, will the currently adjustment direction as The current adjustment direction of next adjustment process, or a comprehensive coefficient of performance is more than the current composite coefficient of performance on described And when being not more than the additional comprehensive coefficient of performance, using the adjustment direction of the additional adjustment process as next adjustment process Current adjustment direction.
13. device as claimed in claim 11, wherein, the adjusting module is used for：
After calculating current temperature setpoint in the current adjustment direction based on temperature set-point and current adjusting step, institute is obtained Current cold load value of the refrigeration system under the current temperature setpoint is stated, and the pre-defined rule includes：Based on described Currently difference between cold load value and predetermined cold load threshold value determines the current adjusting step of next adjustment process.
14. device as claimed in claim 10, wherein, the determining unit includes：
Data memory module, for storing cold load value and comprehensive coefficient of performance peak value in association；
Comprehensive coefficient of performance peak value acquisition module, for being obtained from the data memory module and acquired initial cold load Comprehensive coefficient of performance peak value corresponding to value；
Adjusting module, it is comprehensive until the refrigeration system for adjusting the temperature set-point of the refrigeration machine in the following manner Close the coefficient of performance and reach the comprehensive coefficient of performance peak value：
Current adjustment direction and current adjusting step based on temperature set-point calculate current temperature setpoint；
Obtain the comprehensive coefficient of performance of the refrigeration system under the current temperature setpoint；
When acquired comprehensive coefficient of performance is not up to the comprehensive coefficient of performance peak value, based on acquired combination property system Count with the difference of the comprehensive coefficient of performance peak value to adjust the adjustment direction of temperature set-point and adjusting step, as next tune It has suffered the current adjustment direction of journey and current adjusting step；And
Determining module, it is corresponding during for the comprehensive coefficient of performance of the refrigeration system to be reached into the comprehensive coefficient of performance peak value Temperature set-point be defined as the temperature set-point of the refrigeration machine.
15. the device as described in claim 11 or 14, wherein, the adjusting module is used for：
Obtain electrical power and the refrigeration system of each equipment in the refrigeration system under the current temperature setpoint Refrigerating capacity of the system under the current temperature setpoint；And
The refrigerating capacity of electrical power and the acquired refrigeration system based on acquired each equipment, calculates the refrigeration Comprehensive coefficient of performance of the system under the current temperature setpoint.
16. the device as described in any in claim 10 to 15, wherein, the cold load acquiring unit includes：
Opening value acquisition module, for obtaining each temperature control in the refrigeration system via the detection of cold load detection means The opening value of valve processed；And
Cold load determining module, for by the maximum opening value in the opening value of acquired each temperature control valve, being defined as The initial cold load value of the refrigeration system.
17. a kind of control device, including：
One or more processors,
The memory coupled with one or more of processors, the memory storage have instruction, when the instruction is described When one or more processors perform so that one or more of computing devices are as described in any in claim 1 to 9 Method.
18. control device as claimed in claim 17, in addition to：
Cold load detection unit, for detecting the cold load value of the refrigeration system.
19. a kind of refrigeration system, including：
Refrigeration machine, the chilled water needed for terminal device serviced for producing refrigeration system；
Water circulating pipe is freezed, is connected with the refrigeration machine, the chilled water pump and the terminal device；
Chilled water pump, for chilled water caused by the refrigeration machine to be supplied into the terminal via the freezing water circulating pipe Equipment；
Cooling tower, for by heat dissipation caused by the terminal device into environment；
Cooling water circulation pipeline, it is connected with the cooling tower, the refrigeration machine and cooling water pump；
Cooling water pump, for providing cooling water for the cooling tower and the refrigeration machine via the cooling water circulation pipeline and following Ring；
Control device as claimed in claim 17；And
Cold load detection unit, for detecting the cold load value of the refrigeration system.
CN201710976946.5A 2017-10-19 2017-10-19 For determining the method, apparatus and system of the temperature set-point of the refrigeration machine of refrigeration system Active CN107816828B (en)

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