CN112484269A - Cold quantity distribution method and device, host and air conditioner - Google Patents
Cold quantity distribution method and device, host and air conditioner Download PDFInfo
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- CN112484269A CN112484269A CN202011252939.9A CN202011252939A CN112484269A CN 112484269 A CN112484269 A CN 112484269A CN 202011252939 A CN202011252939 A CN 202011252939A CN 112484269 A CN112484269 A CN 112484269A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The application relates to a cold energy distribution method, a device, a host and an air conditioner, wherein the cold energy distribution method comprises the steps of determining a cold energy distribution proportion combination set of the host; calculating the average host COP under each combination mode in the cold quantity distribution ratio combination set; and performing host cold quantity distribution according to the host cold quantity distribution proportion corresponding to the combination mode with the highest average host COP. According to the method and the device, the cold quantity of each host can be actively controlled, so that the refrigeration host runs under the optimal condition, and the energy efficiency is improved.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to a cold quantity distribution method and device, a host and an air conditioner.
Background
The refrigeration system may have a plurality of hosts at the same time, the traditional cold distribution method is to distribute cold to each refrigeration host at random, and due to the difference of water flow, return water temperature and the like of each refrigeration host, the system cannot achieve optimal cold distribution, and the refrigeration host cannot operate under the optimal working condition. Taking a machine room with total cooling capacity of 600RT as an example, 1 300RT centrifugal cold water main machine and 1 300RT screw cold water main machine are adopted, when the system cooling capacity is 360RT, 2 main machines are started in a conventional distribution mode, cooling capacity is randomly distributed to each main machine, the cooling capacity supplied by each refrigerating main machine is 180RT, namely the load factor is 60%, at the moment, the COP (coefficient of circulation of performance) of the centrifugal cold water main machine is 6.091, the COP of the screw cold water main machine is 6.559, and the average COP of the cold source refrigerating main machine is 6.325.
Disclosure of Invention
In order to overcome the problems that refrigeration hosts of different types or sizes have strong randomness in actual refrigeration quantity distribution and cannot realize highest comprehensive energy efficiency at least to a certain extent, the application provides a refrigeration quantity distribution method, a refrigeration quantity distribution device, a host and an air conditioner.
In a first aspect, the present application provides a method of cold distribution comprising:
determining a host cold quantity distribution proportion combination set;
calculating the average host COP under each combination mode in the cold quantity distribution ratio combination set;
and distributing the host cold quantity according to the host cold quantity distribution proportion corresponding to the combination mode with the highest average host COP.
Further, the host includes:
a centrifugal cold water main machine and a screw cold water main machine;
the method for determining the cold quantity distribution proportion combination set of the main machine comprises the following cold quantity distribution proportion combination modes of the centrifugal cold water main machine and the screw cold water main machine: 0% and 100%, 10% and 90%, 20% and 80%, 30% and 70%, 40% and 60%, 50% and 50%, 60% and 40%, 70% and 30%, 80% and 20%, 90% and 10%, 100% and 0%.
Further, the calculating the average host COP in each combination mode in the cold distribution ratio combination set includes:
the average main engine COP is the centrifugal cold water main engine COP and the cold quantity distribution proportion of the centrifugal cold water main engine + the screw cold water main engine COP and the cold quantity distribution proportion of the screw cold water main engine.
Further, the host refrigeration capacity distribution according to the host refrigeration capacity distribution proportion corresponding to the combination mode with the highest average host COP includes:
acquiring the total cooling capacity required by actual operation;
calculating the cold quantity demand of each host according to the host cold quantity distribution proportion corresponding to the combination mode with the highest average host COP and the actual operation required total cold quantity;
and distributing the cold quantity of the host according to the cold quantity demand of each host.
Further, the method also comprises the following steps:
and sending the cooling capacity demand of each host to each corresponding host.
Further, the acquiring of the total cooling capacity required by actual operation includes:
acquiring the water temperature of a cold water return main pipe, the water temperature of a cold water supply main pipe and the water flow of the cold water return main pipe or the water flow of a water supply pipe;
calculating the total cooling capacity required by actual operation according to the water temperature of the cold water return main pipe, the water temperature of the cold water supply main pipe and the water flow of the cold water return main pipe;
or the like, or, alternatively,
and calculating the total cooling capacity required by actual operation according to the water temperature of the cold water return header pipe, the water temperature of the cold water supply header pipe and the water flow of the water supply pipe.
Further, the method also comprises the following steps:
acquiring the total heat quantity of actual operation requirements;
calculating the heat demand of each host according to the actual operation demand total heat;
and distributing the heat quantity of the host according to the heat quantity demand of each host.
Further, the acquiring the total heat required by the actual operation comprises:
and directly reading the heat value through a heat meter, and taking the read heat value as the total heat required by actual operation.
In a second aspect, the present application provides a refrigeration dispensing apparatus comprising:
the determining module is used for determining a host machine cold quantity distribution proportion combination set;
the calculation module is used for calculating the average host COP under each combination mode in the cold quantity distribution ratio combination set;
and the distribution module is used for distributing the host computer cold quantity according to the host computer cold quantity distribution proportion corresponding to the combination mode with the highest average host computer COP.
In a third aspect, the present application provides a refrigeration distribution system comprising:
a cold distribution device according to the second aspect and at least one host;
the cold energy distribution device is connected with the at least one host.
Further, the at least one host comprises:
a centrifugal cold water main machine and a screw cold water main machine;
the centrifugal cold water main machine and the screw cold water main machine carry out cold output according to cold demand by adjusting self parameters.
Further, the centrifugal cold water main machine outputs cold quantity according to the cold quantity demand by adjusting the parameters of the centrifugal cold water main machine comprises:
and the centrifugal cold water main machine outputs cold energy according to the cold energy demand by adjusting the frequency of the compressor and the opening degree of the guide vane.
Further, the cold output of the screw type cold water host machine according to the cold demand by adjusting the parameters of the screw type cold water host machine comprises:
the screw type cold water main machine outputs cold energy according to the cold energy demand by adjusting the slide valve and the rotating speed.
Further, the method also comprises the following steps:
calculating corresponding adjustment parameter values of the centrifugal cold water main machine and the screw cold water main machine;
and sending the corresponding adjustment parameter values of the centrifugal cold water main machine and the screw cold water main machine to the corresponding main machines so as to enable the centrifugal cold water main machine and the screw cold water main machine to output cold energy according to the corresponding adjustment parameter values.
In a fourth aspect, the present application provides an air conditioner comprising:
a processor and a memory;
the processor is adapted to execute a computer program stored in the memory to implement the method of cold distribution according to any of the first aspect.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the cold quantity distribution method comprises the steps of determining a cold quantity distribution proportion combination set of the host, calculating the average host COP under each combination mode in the cold quantity distribution proportion combination set, and distributing the host cold quantity according to the host cold quantity distribution proportion corresponding to the combination mode with the highest average host COP, so that the active control of the cold quantity of each host is realized, the refrigeration host runs under the optimal condition, and the energy efficiency is improved.
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 application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a flowchart of a method for distributing cold energy according to an embodiment of the present application.
Fig. 2 is a flowchart of a method for distributing cold energy according to another embodiment of the present application.
Fig. 3 is a flowchart of a method for distributing cold energy according to another embodiment of the present application.
Fig. 4 is a functional block diagram of a refrigeration capacity distribution device according to an embodiment of the present application.
Fig. 5 is a functional block diagram of a refrigeration capacity distribution system according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a refrigeration distribution system according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of a refrigeration capacity distribution method according to an embodiment of the present application, and as shown in fig. 1, the refrigeration capacity distribution method includes:
s11: determining a host cold quantity distribution proportion combination set;
s12: calculating the average host COP under each combination mode in the cold quantity distribution ratio combination set;
s13: and performing host cold quantity distribution according to the host cold quantity distribution proportion corresponding to the combination mode with the highest average host COP.
The traditional cold distribution method is to distribute cold randomly to each refrigeration host, taking a machine room with total cold of 600RT as an example, 1 300RT centrifugal cold water host and 1 300RT screw cold water host are adopted, when the system cold is 360RT, the conventional distribution mode is to start 2 hosts, cold is randomly distributed to each host, the cold supply capacity of each refrigeration host is 180RT, namely the load factor is 60%, at the moment, the COP (coefficient of cyclic performance) of the centrifugal cold water host is 6.091, the COP of the screw cold water host is 6.559, the average COP of the cold source refrigeration hosts is 6.325, and therefore, the actual cold supply distribution randomness of the hosts is strong, and the highest comprehensive energy efficiency or different sizes of the refrigeration hosts cannot be realized
In this embodiment, the average host COP in each combination mode in the host cold distribution proportion set is calculated by determining the host cold distribution proportion set, and host cold distribution is performed according to the host cold distribution proportion corresponding to the combination mode with the highest average host COP, so that active control over the cold of each host is realized, and the refrigeration host operates under the optimal condition, and the energy efficiency is improved.
An embodiment of the present application provides another method for distributing cold, as shown in a flowchart of fig. 2, in a cold distribution system, where a refrigeration host includes a centrifugal cold water host and a screw cold water host, the method for distributing cold includes:
s21: determining a host cold quantity distribution proportion combination set;
for example, determining distribution ratio combination concentrated cold quantity distribution ratio combination modes of the centrifugal cold water main machine and the screw cold water main machine respectively includes but is not limited to: 0% and 100%, 10% and 90%, 20% and 80%, 30% and 70%, 40% and 60%, 50% and 50%, 60% and 40%, 70% and 30%, 80% and 20%, 90% and 10%, 100% and 0%.
It should be noted that the cold distribution proportion combination mode can be divided according to historical empirical data and different host type performances, and it can be understood that the more detailed the cold distribution proportion combination mode is, the more accurate the calculated average host COP is, the more favorable the optimal combination proportion is to be selected to achieve the optimal cold distribution state.
S22: calculating the average host COP under each combination mode in the cold quantity distribution ratio combination set;
the average main engine COP is the centrifugal cold water main engine COP and the cold quantity distribution proportion of the centrifugal cold water main engine + the screw cold water main engine COP and the cold quantity distribution proportion of the screw cold water main engine.
S23: acquiring the total cooling capacity required by actual operation;
in some embodiments, obtaining the actual operational demand total capacity comprises:
acquiring the water temperature of a cold water return main pipe, the water temperature of a cold water supply main pipe and the water flow of the cold water return main pipe or the water flow of a water supply pipe;
calculating the total cooling capacity required by actual operation according to the water temperature of the cold water return main pipe, the water temperature of the cold water supply main pipe and the water flow of the cold water return main pipe;
or the like, or, alternatively,
and calculating the total cooling capacity required by actual operation according to the water temperature of the cold water return header pipe, the water temperature of the cold water supply header pipe and the water flow of the water supply pipe.
S24: calculating the cold quantity demand of each host according to the host cold quantity distribution proportion corresponding to the combination mode with the highest average host COP and the actual operation required total cold quantity;
s25: and (4) performing host cold quantity distribution according to the cold quantity demand of each host.
In some embodiments, further comprising:
and sending the cooling capacity demand of each host to each corresponding host.
Taking 1 centrifugal cold water host machine with 300RT and 1 screw cold water host machine with 300RT as examples of system configuration, the actual operation cold requirement is 360RT, the inlet temperature of cooling water is 29.44 ℃, the outlet temperature of chilled water is 7 ℃ as examples, calculating average host machine COP under each combination mode in the cold distribution ratio combination set by determining the host machine cold distribution ratio combination set, calculating the cold requirement of each host machine as 240RT of the centrifugal cold water host machine and 120RT of the screw cold water host machine according to the host machine cold distribution ratio corresponding to the combination mode with the highest average host machine COP and the actual operation total cold requirement, respectively, transmitting the signal of the cold requirement of 240RT to the centrifugal cold water host machine, transmitting the signal of the cold requirement of 120RT to the screw cold water host machine, enabling the centrifugal cold water host machine to output 240RT (the load rate is 80%) by adjusting the frequency and the guide vane opening degree combination, corresponding operation parameters are intelligently adjusted to achieve the optimal operation mode corresponding to cold supply, the COP is 6.541, the cold output of the screw type cold water main machine is 120RT (load factor is 40%), the cold requirement and the current pressure ratio requirement are met, the corresponding operation parameters are intelligently adjusted to achieve the optimal operation mode corresponding to cold supply by changing a slide valve and frequency, the main machine COP is 6.461, the cold source refrigeration average main machine COP is 6.510, compared with the traditional average main machine COP obtained by randomly averaging different cold values in the prior art, the COP of the main machine is 6.325, and in the embodiment, the energy efficiency is improved by 2.9%.
The load rate of the traditional main machine is comprehensively judged by the temperature difference, flow and the like between the inflow of the refrigeration backwater and the water supply, so that the load rate output is realized, the cold output mode is not controlled, and the highest energy efficiency cannot be ensured because different refrigeration main machines have different characteristics in one cold machine combination and the load rates of the refrigeration main machines are consistent or the refrigeration main machines are distributed according to a fixed proportion.
In this embodiment, the cold distribution proportion corresponding to the optimal cycle performance coefficient is obtained by enumeration, and the load ratios of the refrigeration hosts are determined under the condition of the known cold distribution proportion, so that the highest energy efficiency can be achieved under the condition that the total cooling capacity of the system is not changed.
Fig. 3 is a flowchart of a refrigeration capacity distribution method according to an embodiment of the present application, and as shown in fig. 3, the refrigeration capacity distribution method includes:
s31: acquiring the total heat quantity of actual operation requirements;
in some embodiments, obtaining the actual total heat required for operation includes:
and directly reading the heat value through a heat meter, and taking the read heat value as the total heat required by actual operation.
S32: calculating the heat demand of each host according to the total heat of the actual operation demand;
in some embodiments, before calculating the less host heat demand, further comprising:
s321: determining a host heat distribution proportion combination set;
s322: calculating the average host COP under each combination mode in the heat distribution proportion combination set;
s323: and calculating the heat demand of each host according to the host heat distribution proportion corresponding to the combination mode with the highest average host COP and the total heat of the actual operation demand.
S33: and performing heat distribution of the host according to the heat demand of each host.
In this embodiment, the heat demand of each host is calculated, and the heat of the host is distributed according to the heat demand of each host, so that the heating energy efficiency of the system can be improved.
Fig. 4 is a functional block diagram of a refrigeration capacity distribution device provided in an embodiment of the present application, as shown in fig. 4, the refrigeration capacity distribution device includes:
the determining module 41 is used for determining a host cold quantity distribution proportion combination set;
the calculating module 42 is used for calculating the average host COP under each combination mode in the cold quantity distribution ratio combination set;
and the distribution module 43 is used for distributing the host computer cold quantity according to the host computer cold quantity distribution proportion corresponding to the combination mode with the highest average host computer COP.
In this embodiment, the determination module determines the host cold distribution proportion combination set, the calculation module calculates the average host COP in each combination mode in the cold distribution proportion combination set, and the distribution module performs host cold distribution according to the host cold distribution proportion corresponding to the combination mode with the highest average host COP, so that active control over the cold of each host can be realized, so that the refrigeration host operates under the optimal condition, and the energy efficiency is improved.
An embodiment of the present application provides a refrigeration capacity distribution system, as shown in a functional block diagram of fig. 5, in the refrigeration capacity distribution system, a refrigeration host includes a centrifugal cold water host and a screw cold water host, and the refrigeration capacity distribution system includes:
the cold distribution device 51 and at least one host machine as described above;
the cold distribution device 51 is connected to at least one host.
At least one host computer includes: a centrifugal cold water main machine 52 and a screw cold water main machine 53;
the centrifugal cold water main machine 52 and the screw cold water main machine 53 carry out cold output according to the cold demand by adjusting the parameters of the centrifugal cold water main machine and the screw cold water main machine.
In some embodiments, as shown in fig. 6, the cooling capacity distribution system includes a centrifugal chiller 1, a screw chiller 2, a centrifugal compressor 3, a screw compressor 4, a centrifugal evaporator 5, a centrifuge condenser 6, a screw evaporator 7, a screw condenser 8, a centrifuge chiller pump 9, a centrifuge chiller pump 10, a screw chiller pump 11, a screw chiller pump 12, a chilled water return 13 (connected to the water inlet end of the evaporator), a chilled water supply 14 (connected to the water outlet end of the host evaporator), a chilled water supply 15 (connected to the water outlet end of the condenser), and a chilled water return 16 (connected to the water inlet end of the condenser), through which cooling capacity output and adjustment are performed.
The centrifugal cold water host machine outputs cold energy according to the cold energy demand by adjusting the parameters of the centrifugal cold water host machine, and the method comprises the following steps: the centrifugal cold water main machine outputs cold energy according to the cold energy demand by adjusting the frequency of the compressor and the opening degree of the guide vane.
The screw type cold water host machine outputs cold energy according to the cold energy demand by adjusting the parameters of the screw type cold water host machine, and the screw type cold water host machine comprises the following steps: the screw type cold water main machine outputs cold energy according to the cold energy demand by adjusting the slide valve and the rotating speed.
In some embodiments, further comprising:
calculating corresponding adjustment parameter values of the centrifugal cold water main machine and the screw cold water main machine;
and sending the corresponding adjustment parameter values of the centrifugal cold water host and the screw cold water host to the corresponding host so as to output cold energy according to the corresponding adjustment parameter values.
In this embodiment, the refrigeration capacity distribution device is connected to at least one host, the refrigeration capacities required by different refrigeration hosts are distributed and sent to corresponding hosts, active control over the refrigeration capacity of each host is realized, and the refrigeration hosts perform optimal operation strategies under the requirements of corresponding pressure ratios and refrigeration capacities by intelligently adjusting the parameter settings of the refrigeration hosts, so that the energy efficiency of the system is improved.
The present embodiment provides an air conditioner including: a processor and a memory;
the processor is adapted to execute a computer program stored in the memory to implement the method of cold distribution as described in any one of the above embodiments.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.
Claims (15)
1. A method for cold distribution, comprising:
determining a host cold quantity distribution proportion combination set;
calculating the average host COP under each combination mode in the cold quantity distribution ratio combination set;
and distributing the host cold quantity according to the host cold quantity distribution proportion corresponding to the combination mode with the highest average host COP.
2. The method for cold distribution according to claim 1, characterised in that the host machine comprises:
a centrifugal cold water main machine and a screw cold water main machine;
the method for determining the cold quantity distribution proportion combination set of the main machine comprises the following cold quantity distribution proportion combination modes of the centrifugal cold water main machine and the screw cold water main machine: 0% and 100%, 10% and 90%, 20% and 80%, 30% and 70%, 40% and 60%, 50% and 50%, 60% and 40%, 70% and 30%, 80% and 20%, 90% and 10%, 100% and 0%.
3. The method for cold distribution according to claim 2, where the calculating the average host COP for each combination in the set of cold distribution proportions comprises:
the average main engine COP is the centrifugal cold water main engine COP and the cold quantity distribution proportion of the centrifugal cold water main engine + the screw cold water main engine COP and the cold quantity distribution proportion of the screw cold water main engine.
4. The cold energy distribution method according to claim 1, wherein the distributing the host cold energy according to the host cold energy distribution ratio corresponding to the combination mode with the highest average host COP comprises:
acquiring the total cooling capacity required by actual operation;
calculating the cold quantity demand of each host according to the host cold quantity distribution proportion corresponding to the combination mode with the highest average host COP and the actual operation required total cold quantity;
and distributing the cold quantity of the host according to the cold quantity demand of each host.
5. The method for cold distribution according to claim 4, further comprising:
and sending the cooling capacity demand of each host to each corresponding host.
6. The method for cold distribution according to claim 4, characterised in that said obtaining of the total cold required for actual operation comprises:
acquiring the water temperature of a cold water return main pipe, the water temperature of a cold water supply main pipe and the water flow of the cold water return main pipe or the water flow of a water supply pipe;
calculating the total cooling capacity required by actual operation according to the water temperature of the cold water return main pipe, the water temperature of the cold water supply main pipe and the water flow of the cold water return main pipe;
or the like, or, alternatively,
and calculating the total cooling capacity required by actual operation according to the water temperature of the cold water return header pipe, the water temperature of the cold water supply header pipe and the water flow of the water supply pipe.
7. The method for cold distribution according to claim 1, further comprising:
acquiring the total heat quantity of actual operation requirements;
calculating the heat demand of each host according to the actual operation demand total heat;
and distributing the heat quantity of the host according to the heat quantity demand of each host.
8. The method for cold distribution according to claim 7, wherein said obtaining the total heat of the actual operating demand comprises:
and directly reading the heat value through a heat meter, and taking the read heat value as the total heat required by actual operation.
9. A cold distribution device, characterized in that it comprises:
the determining module is used for determining a host machine cold quantity distribution proportion combination set;
the calculation module is used for calculating the average host COP under each combination mode in the cold quantity distribution ratio combination set;
and the distribution module is used for distributing the host computer cold quantity according to the host computer cold quantity distribution proportion corresponding to the combination mode with the highest average host computer COP.
10. A refrigeration distribution system, comprising:
a cold distribution device according to claim 9 and at least one host;
the cold energy distribution device is connected with the at least one host.
11. The refrigeration distribution system of claim 10, wherein the at least one host machine comprises:
a centrifugal cold water main machine and a screw cold water main machine;
the centrifugal cold water main machine and the screw cold water main machine carry out cold output according to cold demand by adjusting self parameters.
12. The refrigeration distribution system of claim 11, wherein said centrifugal chiller host configured to provide refrigeration output in accordance with refrigeration demand by adjusting its parameters comprises:
and the centrifugal cold water main machine outputs cold energy according to the cold energy demand by adjusting the frequency of the compressor and the opening degree of the guide vane.
13. The refrigeration distribution system of claim 11, wherein the screw chiller outputting refrigeration according to refrigeration demand by adjusting its parameters comprises:
the screw type cold water main machine outputs cold energy according to the cold energy demand by adjusting the slide valve and the rotating speed.
14. The refrigeration distribution system of claim 11, further comprising:
calculating corresponding adjustment parameter values of the centrifugal cold water main machine and the screw cold water main machine;
and sending the corresponding adjustment parameter values of the centrifugal cold water main machine and the screw cold water main machine to the corresponding main machines so as to enable the centrifugal cold water main machine and the screw cold water main machine to output cold energy according to the corresponding adjustment parameter values.
15. An air conditioner, comprising:
a processor and a memory;
the processor is intended to execute a computer program stored in the memory for implementing the method for cold distribution according to any one of claims 1 to 8.
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