CN115654786A - Method and device for automatically determining operation strategy of water chilling unit - Google Patents
Method and device for automatically determining operation strategy of water chilling unit Download PDFInfo
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Abstract
The disclosure relates to a method and a device for automatically determining an operation strategy of a water chilling unit. The method comprises the following steps: determining various combination modes of a plurality of water chilling units in a building to be calculated; determining a target combination mode according to the required cold quantity; determining the refrigeration performance coefficient of the target combination mode according to the required refrigeration capacity and the capacity of the target combination mode; and determining the energy consumption of the target combination mode according to the refrigeration performance coefficient of the target combination mode. According to the method for automatically determining the operation strategy of the water chilling unit, the water chilling unit in the building to be calculated can be combined based on the water chilling unit, so that the water chilling unit is completely calculated, a target combination mode can be selected, the energy consumption of the combination mode is automatically calculated, the calculation complexity is reduced, the calculation convenience is improved, and the manual workload is greatly reduced.
Description
Technical Field
The disclosure relates to the technical field of building energy consumption, in particular to a method and a device for automatically determining an operation strategy of a water chilling unit.
Background
The energy consumption of buildings mainly comprises heating air-conditioning, lighting, ventilation, domestic hot water, electric appliances and the like, wherein the energy consumption of a refrigerating system accounts for a large proportion. Therefore, when the building energy consumption is calculated, whether the energy consumption of the refrigeration system can be accurately and conveniently calculated is a key problem. The determination and optimization of the operating strategy of chiller units in a refrigeration system is a computationally difficult problem.
The determination of the operation strategy of the water chilling unit needs to consider factors such as coefficient of performance (COP) of the water chilling unit, load factor, the number of types of the water chilling unit and the like under different working conditions, and needs to consider the matching of different units, the on-off matching of different units and the like. The energy consumption calculation method in the related art has the advantages that the operation strategy input of the water chilling unit is not available, the energy consumption calculation is incomplete, the input is complicated and unintelligible, the accurate input is difficult, the energy consumption of the water chilling unit is difficult to calculate accurately and conveniently, and if the calculation is carried out manually by engineering technicians, the required workload is huge, so that great burden is caused to the engineering technicians.
Disclosure of Invention
The disclosure provides a method and a device for automatically determining an operation strategy of a water chilling unit.
According to one aspect of the disclosure, a method for automatically determining an operation strategy of a water chilling unit is provided, which includes:
determining a plurality of combination modes of a plurality of water chilling units in a building to be calculated, wherein the combination modes at least comprise one water chilling unit;
determining a target combination mode in the multiple combination modes according to the required cold quantity;
determining the refrigeration performance coefficient of the target combination mode according to the required refrigeration capacity and the capacity of the target combination mode;
and determining the energy consumption of the target combination mode according to the refrigeration performance coefficient of the target combination mode.
In a possible implementation manner, the determining, according to the required cooling capacity, a target combination manner of the multiple combination manners includes:
sequencing the capacities of the multiple combination modes to obtain a combination mode sequence;
and selecting the combination mode with the capacity closest to the required cold quantity and larger than the required cold quantity in the combination mode sequence as the target combination mode.
In one possible implementation manner, determining the refrigeration performance coefficient of the target combination manner according to the required refrigeration capacity and the capacity of the target combination manner includes:
determining a target load rate of the target combination mode according to the required cold capacity and the capacity of the target combination mode;
enabling the load rate of each water chilling unit in the target combination mode to be equal to the target load rate;
determining the refrigeration performance coefficient of each water chilling unit according to the target load rate and the type of each water chilling unit;
determining the power of each water chilling unit according to the refrigeration performance coefficient of each water chilling unit, the capacity of each water chilling unit and the target load rate;
and determining the refrigeration performance coefficient of the target combination mode according to the power of each water chilling unit.
In one possible implementation manner, determining the refrigeration performance coefficient of each water chilling unit according to the target load rate and the type of each water chilling unit includes:
under the condition that the type of the water chilling unit is a screw type water chilling unit, according to a formula
COP=-6.769506x 2 +9.102712x +3.491580 to obtain the coefficient of refrigeration performance COP of the water chilling unit; or
In the case where the chiller is of the centrifugal chiller type, the formula is based on
COP=-16.079545x 2 +21.860227x-0.257500 to obtain the refrigerating performance of the water chilling unitCoefficient of performance (COP); or
Under the condition that the type of the water chilling unit is a piston type water chilling unit or a vortex type water chilling unit, according to a formula
COP= COP ， ×x/（0.088+1.138×x-0.226×x 2 ) Obtaining the coefficient of performance COP of the water chilling unit, wherein x is the target load factor COP ， Is the rated refrigeration performance coefficient.
In one possible implementation manner, determining the power of each water chilling unit according to the refrigeration performance coefficient of each water chilling unit, the capacity of each water chilling unit and the target load rate includes:
determining the refrigeration load of the water chilling unit according to the capacity of the water chilling unit and the target load rate;
and determining the power of the water chilling unit according to the refrigeration load of the water chilling unit and the refrigeration performance coefficient of the water chilling unit.
In one possible implementation manner, determining the refrigeration performance coefficient of the target combination manner according to the power of each water chilling unit includes:
summing the power of each water chilling unit to obtain the combined power of the target combination mode;
and obtaining the refrigerating performance coefficient of the target combination mode through the capacity of the target combination mode and the combined power.
In one possible implementation manner, determining the energy consumption of the target combination manner according to the refrigeration performance coefficient of the target combination manner includes:
and determining the ratio of the required cold quantity to the refrigeration performance coefficient of the target combination mode as the energy consumption of the target combination mode.
According to another aspect of the present disclosure, there is provided an apparatus for automatically determining an operation strategy of a chiller, the apparatus comprising:
the combined module is used for determining a plurality of combined modes of a plurality of water chilling units in a building to be calculated, wherein the combined modes at least comprise one water chilling unit;
the target combination module is used for determining a target combination mode in the multiple combination modes according to the required cold quantity;
the refrigerating performance coefficient module is used for determining the refrigerating performance coefficient of the target combination mode according to the required refrigerating capacity and the capacity of the target combination mode;
and the energy consumption module is used for determining the energy consumption of the target combination mode according to the refrigeration performance coefficient of the target combination mode.
In one possible implementation, the target combination module is further configured to:
sequencing the capacities of the multiple combination modes to obtain a combination mode sequence;
and selecting the combination mode with the capacity closest to the required cold quantity and larger than the required cold quantity in the combination mode sequence as the target combination mode.
In one possible implementation, the refrigeration coefficient of performance module is further configured to:
determining a target load rate of the target combination mode according to the required cold capacity and the capacity of the target combination mode;
enabling the load rate of each water chilling unit in the target combination mode to be equal to the target load rate;
determining the refrigeration performance coefficient of each water chilling unit according to the target load rate and the type of each water chilling unit;
determining the power of each water chilling unit according to the refrigeration performance coefficient of each water chilling unit, the capacity of each water chilling unit and the target load rate;
and determining the refrigeration performance coefficient of the target combination mode according to the power of each water chilling unit.
In one possible implementation, the refrigeration coefficient of performance module is further configured to:
under the condition that the type of the water chilling unit is a screw water chilling unit, according to a formula
COP=-6.769506x 2 +9.102712x +3.491580 to obtain the coefficient of refrigeration performance COP of the water chilling unit; or alternatively
In the case where the chiller is of the centrifugal chiller type, according to the formula
COP=-16.079545x 2 +21.860227x-0.257500 to obtain the coefficient of performance COP of the water chilling unit; or alternatively
Under the condition that the type of the water chilling unit is a piston type water chilling unit or a vortex type water chilling unit, according to a formula
COP= COP ， ×x/（0.088+1.138×x-0.226×x 2 ) Obtaining the coefficient of performance COP of the water chilling unit, wherein x is the target load factor, COP ， Is the rated refrigeration performance coefficient.
In one possible implementation, the refrigeration coefficient of performance module is further configured to:
determining the refrigeration load of the water chilling unit according to the capacity of the water chilling unit and the target load rate;
and determining the power of the water chilling unit according to the refrigeration load of the water chilling unit and the refrigeration performance coefficient of the water chilling unit.
In one possible implementation, the refrigeration coefficient of performance module is further configured to:
summing the power of the water chilling units to obtain the combined power of the target combination mode;
and obtaining the refrigeration performance coefficient of the target combination mode through the capacity of the target combination mode and the combined power.
In one possible implementation, the energy consumption module is further configured to:
and determining the ratio of the required cold capacity to the refrigeration performance coefficient of the target combination mode as the energy consumption of the target combination mode.
According to another aspect of the present disclosure, there is provided an apparatus for automatically determining an operation strategy of a chiller, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to invoke the memory-stored instructions to perform the above-described method.
According to another aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the above-described method.
According to the method for automatically determining the operation strategy of the water chilling unit, the water chilling unit in the building to be calculated can be combined based on the water chilling unit, so that the water chilling unit is completely calculated, a proper target combination mode can be selected, energy waste is avoided, insufficient cooling capacity is avoided, the energy consumption of the combination mode is automatically calculated, the calculation complexity is reduced, the calculation convenience is improved, and the manual workload is greatly reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. Other features and aspects of the present disclosure will become more apparent from the following detailed description of exemplary embodiments with reference to the attached drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.
FIG. 1 illustrates a flow chart of a method of automatically determining a chiller operation strategy according to an embodiment of the present disclosure;
FIG. 2 illustrates a block diagram of an apparatus for automatically determining a chiller operating strategy according to an embodiment of the present disclosure;
FIG. 3 illustrates a block diagram of an apparatus for automatically determining a chiller operation strategy according to an embodiment of the present disclosure;
fig. 4 shows a block diagram of an electronic device according to an embodiment of the disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of a, B, C, and may mean including any one or more elements selected from the group consisting of a, B, and C.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the subject matter of the present disclosure.
Aiming at the problems in the background art, the method for automatically determining the operation strategy of the water chilling unit can be used for combining the water chilling units in a building to be calculated, so that the calculation of the water chilling unit is complete, a target combination mode can be selected, the energy consumption of the combination mode is automatically calculated, the calculation complexity is reduced, the calculation convenience is improved, and the manual workload is greatly reduced.
Fig. 1 shows a flowchart of a method of automatically determining a chiller operation strategy according to an embodiment of the present disclosure, as shown in fig. 1, the method comprising:
s11, determining a plurality of combination modes of a plurality of water chilling units in a building to be calculated, wherein the combination modes at least comprise one water chilling unit;
s12, determining a target combination mode in the multiple combination modes according to the required cold quantity;
s13, determining a refrigeration performance coefficient of the target combination mode according to the required refrigeration capacity and the capacity of the target combination mode;
and S14, determining the energy consumption of the target combination mode according to the refrigeration performance coefficient of the target combination mode.
In a possible implementation manner, a building to be calculated may include a plurality of water chilling units, the types of the plurality of water chilling units may be different from each other, or may be partially or completely the same, and the disclosure does not limit the types of the water chilling units.
In a possible implementation mode, when the water chilling unit is started, the water chilling unit can be started based on the required cooling capacity, the situation that the cooling capacity provided by the water chilling unit is insufficient and cannot meet the required cooling capacity is avoided, and the situation that the started water chilling unit is too much can also be avoided, so that energy waste is caused.
In a possible implementation manner, in step S11, multiple water chiller units in the building to be calculated may be combined to obtain multiple combination manners, and the multiple combination manners may exhaust various combination manners of the multiple water chiller units to obtain all combination manners. For example, if there are n water chilling units in a building to be calculated, C is shared 1 n +C 2 n …+ C n n And (4) a combination mode.
In one possible implementation, in step S12, a target combination of the plurality of combinations may be determined according to the required cooling capacity. As described above, a proper target combination mode can be selected to avoid insufficient cooling capacity provided by the water chiller and avoid energy waste.
In one possible implementation, step S12 may include: sequencing the capacities of the multiple combination modes to obtain a combination mode sequence; and selecting the combination mode with the capacity closest to the required cold quantity and larger than the required cold quantity in the combination mode sequence as the target combination mode.
In an example, the combined mode sequence may be obtained by sorting the combined mode capacities, for example, the combined mode sequence may be obtained by sorting the capacities from small to large. And selecting a combination mode with the capacity closest to the required cold quantity and larger than the required cold quantity in the combination mode sequence as a target combination mode, for example, if the capacity of the ith combination mode is less than the required cold quantity and less than the capacity of the (i + 1) th combination mode, taking the (i + 1) th combination mode as the target combination mode.
In one possible implementation manner, in step S13, the refrigeration performance coefficient of the target combination may be determined according to the required refrigeration capacity and the capacity of the target combination. Each water chilling unit in the target combination mode can have a corresponding relation curve of the refrigeration performance coefficient and the load rate, the refrigeration performance coefficient of each water chilling unit can be determined by using the relation curve, and then the refrigeration performance coefficient of the target combination mode is determined.
In one possible implementation, step S13 may include: determining a target load rate of the target combination mode according to the required cold capacity and the capacity of the target combination mode; enabling the load rate of each water chilling unit in the target combination mode to be equal to the target load rate; determining the refrigeration performance coefficient of each water chilling unit according to the target load rate and the type of each water chilling unit; determining the power of each water chilling unit according to the refrigeration performance coefficient of each water chilling unit, the capacity of each water chilling unit and the target load rate; and determining the refrigeration performance coefficient of the target combination mode according to the power of each water chilling unit.
In one possible implementation, as described above, the capacity of the target combination > required refrigeration capacity, and therefore, the target coincidence rate of the target combination < 1, i.e., required refrigeration capacity/capacity of the target combination < 1, the required refrigeration capacity/capacity of the target combination can be determined as the target load rate.
In one possible implementation manner, all the chiller units in the target combination manner may be made to perform load balancing, that is, the load rates of all the chiller units are the same, that is, the load rates of all the chiller units are equal to the target load rate.
In one possible implementation, as described above, the water chiller units have a relationship curve of load rate and refrigeration performance coefficient, and the refrigeration performance coefficient of each water chiller unit can be solved based on the load rate of the water chiller unit and the relationship curve.
In one possible implementation manner, determining the refrigeration performance coefficient of each water chilling unit according to the target load rate and the type of each water chilling unit includes: under the condition that the type of the water chilling unit is a screw type water chilling unit, obtaining the coefficient of performance COP of the water chilling unit according to a formula (1):
COP=-6.769506x 2 +9.102712x+3.491580 （1）
or in the case that the type of the water chilling unit is a centrifugal water chilling unit, obtaining the coefficient of performance COP of the water chilling unit according to the formula (2):
COP=-16.079545x 2 +21.860227x-0.257500 （2）
or under the condition that the type of the water chilling unit is a piston type water chilling unit or a vortex type water chilling unit, obtaining the coefficient of performance COP of the water chilling unit according to a formula (3):
COP= COP ， ×x/（0.088+1.138×x-0.226×x 2 ) （3）
wherein x is the target load factor, COP ， Is the rated refrigeration performance coefficient.
In one possible implementation, the above formulas (1), (2) and (3) respectively represent expressions of relationship curves of different types of chiller units, and the target coincidence rate can be substituted into (1), (2) or (3) based on the type of chiller unit, so that the coefficient of performance COP of each chiller unit can be determined.
In one possible implementation, after the refrigeration performance coefficients of the water chiller units are determined, the overall refrigeration performance coefficient of the target combination mode can be further determined. Firstly, determining the power of each water chilling unit, wherein the determining the power of each water chilling unit according to the refrigeration performance coefficient of each water chilling unit, the capacity of each water chilling unit and the target load factor may include: determining the refrigeration load of the water chilling unit according to the capacity of the water chilling unit and the target load rate; and determining the power of the water chilling unit according to the refrigeration load of the water chilling unit and the refrigeration performance coefficient of the water chilling unit.
In one possible implementation, the refrigeration load of each chiller may be determined by multiplying the capacity of the chiller by the target compliance rate. The definition of the refrigeration performance coefficient is the ratio of the refrigeration load to the energy consumption power of the water chiller unit, so that the power of the water chiller unit can be solved through the ratio of the refrigeration load to the refrigeration performance coefficient of the water chiller unit.
In a possible implementation manner, further, the refrigeration performance coefficient of the target combination manner can be determined based on the power of each water chilling unit, and the step can include: summing the power of each water chilling unit to obtain the combined power of the target combination mode; and obtaining the refrigerating performance coefficient of the target combination mode through the capacity of the target combination mode and the combined power.
In one possible implementation, the combined power is the total power of the power summation performed by each chiller, in other words, the total power of the plurality of chillers in the target combined mode under the current total refrigeration load (i.e., the required refrigeration capacity). Further, the refrigeration performance coefficient of the target combination mode can be solved through the ratio of the capacity (namely, the sum of the maximum refrigeration capacity or the rated refrigeration capacity of all the water chilling units in the target combination mode) of the target combination mode to the combined power.
In a possible implementation manner, in step S14, the energy consumption of the target combination manner, that is, the energy consumption of the target combination manner in the case of the current refrigeration load (i.e., the required cooling capacity), can be further determined by the refrigeration performance coefficient of the target combination manner obtained above. Step S14 may include: and determining the ratio of the required cold quantity to the refrigeration performance coefficient of the target combination mode as the energy consumption of the target combination mode, namely, under the condition of the current required cold quantity and the refrigeration performance coefficient of the target combination mode, the total energy consumption of all the water chilling units in the target combination mode.
According to the method for automatically determining the operation strategy of the water chilling unit, the water chilling unit in the building to be calculated can be combined based on the water chilling unit, so that the water chilling unit is completely calculated, a proper target combination mode can be selected, energy waste is avoided, insufficient cooling capacity is avoided, the energy consumption of the combination mode is automatically calculated, the calculation complexity is reduced, the calculation convenience is improved, and the manual workload is greatly reduced.
Fig. 2 is a block diagram illustrating an apparatus for automatically determining an operation policy of a chiller according to an embodiment of the present disclosure, as shown in fig. 2, the apparatus including:
the combined module 11 is used for determining multiple combined modes of multiple water chilling units in a building to be calculated, wherein the combined modes at least comprise one water chilling unit;
the target combination module 12 is used for determining a target combination mode in the multiple combination modes according to the required cold quantity;
a refrigeration performance coefficient module 13, configured to determine a refrigeration performance coefficient of the target combination mode according to the required refrigeration capacity and the capacity of the target combination mode;
and the energy consumption module 14 is configured to determine the energy consumption of the target combination manner according to the refrigeration performance coefficient of the target combination manner.
In one possible implementation, the target combination module is further configured to:
sequencing the capacities of the multiple combination modes to obtain a combination mode sequence;
and selecting the combination mode with the capacity closest to the required cold quantity and larger than the required cold quantity in the combination mode sequence as the target combination mode.
In one possible implementation, the refrigeration coefficient of performance module is further configured to:
determining a target load rate of the target combination mode according to the required cold capacity and the capacity of the target combination mode;
enabling the load rate of each water chilling unit in the target combination mode to be equal to the target load rate;
determining the refrigeration performance coefficient of each water chilling unit according to the target load rate and the type of each water chilling unit;
determining the power of each water chilling unit according to the refrigeration performance coefficient of each water chilling unit, the capacity of each water chilling unit and the target load rate;
and determining the refrigeration performance coefficient of the target combination mode according to the power of each water chilling unit.
In one possible implementation, the refrigeration coefficient of performance module is further configured to:
under the condition that the type of the water chilling unit is a screw type water chilling unit, according to a formula
COP=-6.769506x 2 +9.102712x +3.491580 to obtain the coefficient of refrigeration performance COP of the water chilling unit; or
In the case where the chiller is of the centrifugal chiller type, according to the formula
COP=-16.079545x 2 +21.860227x-0.257500 to obtain the coefficient of performance COP of the water chilling unit; or
Under the condition that the type of the water chilling unit is a piston type water chilling unit or a vortex type water chilling unit, according to a formula
COP= COP ， ×x/（0.088+1.138×x-0.226×x 2 ) Obtaining the coefficient of performance COP of the water chilling unit, wherein x is the target load factor, COP ， Is the rated refrigeration performance coefficient.
In one possible implementation, the refrigeration coefficient of performance module is further configured to:
determining the refrigeration load of the water chilling unit according to the capacity of the water chilling unit and the target load rate;
and determining the power of the water chilling unit according to the refrigeration load of the water chilling unit and the refrigeration performance coefficient of the water chilling unit.
In one possible implementation, the refrigeration coefficient of performance module is further configured to:
summing the power of each water chilling unit to obtain the combined power of the target combination mode;
and obtaining the refrigeration performance coefficient of the target combination mode through the capacity of the target combination mode and the combined power.
In one possible implementation, the energy consumption module is further configured to:
and determining the ratio of the required cold capacity to the refrigeration performance coefficient of the target combination mode as the energy consumption of the target combination mode.
In some embodiments, functions of or modules included in the apparatus provided in the embodiments of the present disclosure may be used to execute the method described in the above method embodiments, and specific implementation thereof may refer to the description of the above method embodiments, and for brevity, will not be described again here.
Embodiments of the present disclosure also provide a computer-readable storage medium, on which computer program instructions are stored, and when executed by a processor, the computer program instructions implement the above method. The computer readable storage medium may be a non-volatile computer readable storage medium.
An embodiment of the present disclosure further provides an electronic device, including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to invoke the memory-stored instructions to perform the above-described method.
The disclosed embodiments also provide a computer program product including computer readable code, and when the computer readable code runs on a device, a processor in the device executes instructions for implementing the cloud application management method provided in any of the above embodiments.
The embodiments of the present disclosure also provide another computer program product for storing computer readable instructions, where the instructions, when executed, cause a computer to perform the operations of the cloud application management method provided in any of the embodiments.
The electronic device may be provided as a terminal, server, or other form of device.
Fig. 3 illustrates a block diagram of an apparatus 800 for automatically determining a chiller operating strategy according to an embodiment of the present disclosure. For example, the device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
Referring to fig. 3, device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output interface 812, a sensor component 814, and a communication component 816.
The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operation at the device 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The power component 806 provides power to the various components of the device 800. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 800.
The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense an edge of a touch or slide action, but also detect a duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The input/output interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 can detect the open/closed state of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 can also detect changes in the position of the device 800 or components within the device 800, the presence or absence of user contact with the device 800, orientation or acceleration/deceleration of the device 800, and changes in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
In an exemplary embodiment, the device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium, such as the memory 804, is also provided that includes computer program instructions executable by the processor 820 of the device 800 to perform the above-described methods.
Fig. 4 shows a block diagram of an electronic device 1900 according to an embodiment of the disclosure. For example, the electronic device 1900 may be provided as a server. Referring to fig. 4, electronic device 1900 includes a processing unit 1922, which further includes one or more processors and memory resources, represented by storage unit 1932, for storing instructions, e.g., applications, that are executable by processing unit 1922. The application programs stored in the storage unit 1932 may include one or more modules that each correspond to a set of instructions. Further, processing unit 1922 is configured to execute instructions to perform the above-described method.
In an exemplary embodiment, a non-transitory computer readable storage medium, such as the storage unit 1932, is also provided that includes computer program instructions that are executable by the processing unit 1922 of the electronic device 1900 to perform the above-described methods.
The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The computer program product may be embodied in hardware, software or a combination thereof. In an alternative embodiment, the computer program product is embodied in a computer storage medium, and in another alternative embodiment, the computer program product is embodied in a Software product, such as a Software Development Kit (SDK) or the like.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A method for automatically determining an operating strategy of a water chilling unit is characterized by comprising the following steps:
determining a plurality of combination modes of a plurality of water chilling units in a building to be calculated, wherein the combination modes at least comprise one water chilling unit;
determining a target combination mode in the multiple combination modes according to the required cold quantity;
determining the refrigeration performance coefficient of the target combination mode according to the required refrigeration capacity and the capacity of the target combination mode;
and determining the energy consumption of the target combination mode according to the refrigeration performance coefficient of the target combination mode.
2. The method for automatically determining an operating strategy of a chiller according to claim 1 wherein determining a target combination of the plurality of combinations based on the required capacity comprises:
sequencing the capacities of the multiple combination modes to obtain a combination mode sequence;
and selecting the combination mode with the capacity closest to the required cold quantity and larger than the required cold quantity in the combination mode sequence as the target combination mode.
3. The method for automatically determining an operating strategy of a chiller according to claim 1, wherein determining a refrigeration performance coefficient of the target combination based on the required refrigeration capacity and the capacity of the target combination comprises:
determining a target load rate of the target combination mode according to the required cold capacity and the capacity of the target combination mode;
enabling the load rate of each water chilling unit in the target combination mode to be equal to the target load rate;
determining the refrigeration performance coefficient of each water chilling unit according to the target load rate and the type of each water chilling unit;
determining the power of each water chilling unit according to the refrigeration performance coefficient of each water chilling unit, the capacity of each water chilling unit and the target load rate;
and determining the refrigeration performance coefficient of the target combination mode according to the power of each water chilling unit.
4. The method for automatically determining an operating strategy of water chilling unit according to claim 3, wherein determining a refrigeration performance coefficient of each water chilling unit according to the target load rate and the type of each water chilling unit comprises:
under the condition that the type of the water chilling unit is a screw type water chilling unit, according to a formula
COP=-6.769506x 2 +9.102712x +3.491580 to obtain the coefficient of refrigeration performance COP of the water chilling unit; or alternatively
In the case where the chiller is of the centrifugal chiller type, according to the formula
COP=-16.079545x 2 +21.860227x-0.257500 to obtain the coefficient of performance COP of the water chilling unit; or alternatively
Under the condition that the type of the water chilling unit is a piston type water chilling unit or a vortex type water chilling unit, according to a formula
COP= COP ， ×x/（0.088+1.138×x-0.226×x 2 ) Obtaining the coefficient of performance COP of the water chilling unit, wherein x is the target load factor, COP ， Is the rated refrigeration performance coefficient.
5. The method of automatically determining an operating strategy of chiller units according to claim 3, wherein determining the power of each chiller unit according to the refrigeration performance coefficient of each chiller unit, the capacity of each chiller unit and the target load rate comprises:
determining the refrigeration load of the water chilling unit according to the capacity of the water chilling unit and the target load rate;
and determining the power of the water chilling unit according to the refrigeration load of the water chilling unit and the refrigeration performance coefficient of the water chilling unit.
6. The method for automatically determining an operation strategy of the water chilling unit according to claim 3, wherein the step of determining the refrigeration performance coefficient of the target combination mode according to the power of each water chilling unit comprises the following steps:
summing the power of the water chilling units to obtain the combined power of the target combination mode;
and obtaining the refrigeration performance coefficient of the target combination mode through the capacity of the target combination mode and the combined power.
7. The method for automatically determining an operating strategy of a water chilling unit according to claim 1, wherein determining the energy consumption of the target combination according to the refrigeration performance coefficient of the target combination comprises:
and determining the ratio of the required cold capacity to the refrigeration performance coefficient of the target combination mode as the energy consumption of the target combination mode.
8. An apparatus for automatically determining an operating strategy for a chiller, comprising:
the combined module is used for determining a plurality of combined modes of a plurality of water chilling units in a building to be calculated, and the combined modes at least comprise one water chilling unit;
the target combination module is used for determining a target combination mode in the multiple combination modes according to the required cold quantity;
the refrigeration performance coefficient module is used for determining the refrigeration performance coefficient of the target combination mode according to the required refrigeration capacity and the capacity of the target combination mode;
and the energy consumption module is used for determining the energy consumption of the target combination mode according to the refrigeration performance coefficient of the target combination mode.
9. An apparatus for automatically determining an operating strategy for a chiller, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to invoke the memory-stored instructions to perform the method of any one of claims 1 to 7.
10. A computer-readable storage medium, having stored thereon computer program instructions, which when executed by a processor, implement the method of any one of claims 1-7.
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