CN111836524A - IT load change-based method for regulating and controlling variable air volume of precision air conditioner between data center columns - Google Patents
IT load change-based method for regulating and controlling variable air volume of precision air conditioner between data center columns Download PDFInfo
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
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Abstract
The invention provides a method for regulating and controlling variable air volume of a data center inter-row precise air conditioner based on IT load change, aiming at the condition that the load of rack IT equipment in the operation process of a data center machine room is changed, the frequency of a corresponding inter-row precise air conditioner fan is controlled by utilizing the real-time total power consumption of the rack IT equipment of each cold channel, the air supply volume is further controlled, the matching of the heat productivity and the cold quantity supply of the equipment is realized, the operation energy consumption of the fan of the inter-row precise air conditioner can be greatly reduced, and the effects of saving energy and reducing emission of the data center are achieved.
Description
Technical Field
The invention relates to the technical field of energy conservation of data center air conditioning systems, in particular to a method for regulating and controlling variable air volume of a precise air conditioner between data center columns based on IT load change.
Background
In recent years, with the rapid development of a new generation of information technology, a data center is an important infrastructure, is a carrier for various applications such as big data, artificial intelligence, AR/VR, industrial internet of things, smart cities, smart energy, smart finance, 5G/4G and the like, and has a explosive increase in scale, and because IT equipment of the data center has a large heat productivity and high energy consumption density, a large amount of circulating cold air needs to be provided by a precise air conditioner for cooling, so that the energy consumption of the precise air conditioner accounts for more than 30% of the energy consumption of an air conditioning system of the data center, and the energy saving of the precise air conditioner of the data center is particularly important. At present, part of data centers adopt the inter-row precise air conditioner to cool the frame IT equipment, the opening degree of a freezing water valve is controlled by using the return air temperature, the air volume regulation of the inter-row precise air conditioner is not considered, and the energy conservation of a fan of the inter-row precise air conditioner cannot be realized.
Because each IT device of the data center has large fluctuation of operation power consumption and heat productivity in different time periods according to the service characteristics borne by the IT device, the cold quantity in each cold channel of the machine room exceeds the actual requirement, and a great deal of energy is wasted. Therefore, the method for regulating and controlling the variable air volume of the data center inter-row precise air conditioner based on IT load change is designed, the cold volume of the inter-row precise air conditioner is calculated in real time based on the real-time power consumption and the heat productivity of the frame IT equipment in each cold channel, the variable air volume precise regulation is carried out on the inter-row precise air conditioner through the frequency converter, and the energy consumption of a fan of the inter-row precise air conditioner can be greatly reduced.
Disclosure of Invention
In order to solve at least one technical problem, the invention provides a method for regulating and controlling the variable air volume of a data center inter-row precise air conditioner based on IT load change, which can regulate and control the cold volume of the inter-row precise air conditioner corresponding to the IT equipment of a rack in the same cold channel according to the real-time power consumption of the equipment, so that the heat productivity of the equipment is matched with the supply of the cold volume, and the energy consumption of an inter-row precise air conditioner system is reduced, wherein the regulating and controlling method comprises the following steps:
step 1: the data center is provided with n closed cold channels, pressure sensors are installed in all the cold channels and the hot channels, the ith cold channel pressure Pi and the hot channel pressure P0 are collected through the cold channel pressure sensors and the hot channel pressure sensors respectively, and the pressure difference delta Pi of the ith cold channel pressure Pi and the pressure difference delta Pi of the ith hot channel pressure P0 are calculated, wherein i is 1-n;
step 2: judging whether the pressure difference delta Pi meets delta PL < deltaPi < deltaPH; if yes, entering a step 3, and if not, entering a pressure difference adjusting process until the pressure difference delta P meets delta PL < deltaPi < deltaPH, wherein the delta PL is a set pressure difference lower limit value, and the delta PH is a set pressure difference upper limit value;
and step 3: collecting real-time operation power consumption of all rack IT equipment in the ith cold channel through a first cabinet;
and 4, step 4: calculating the power consumption sum Wi of all the rack IT equipment in the ith cold channel, neglecting the power consumption of the fans of the IT equipment, and enabling the total heating quantity Qi of the IT equipment to be equal to the total power consumption Wi of the IT equipment;
and 5: collecting the air supply temperature Tij of the jth inter-row precise air conditioner in the ith cold channel by an air supply temperature sensor, wherein m inter-row precise air conditioners are arranged in the cold channel, the value of j is 1-m, the upper limit value TH of the return air temperature is set, and the temperature difference delta Tij between the upper limit value TH of the set return air temperature and the air supply temperature Tij of each inter-row precise air conditioner is calculated;
step 6: supposing that the air supply volumes of m inter-row precise air conditioners in the ith cold channel are equal and are all Mi, passing through
C is the specific heat capacity of air so as to determine the air supply quantity Mi of the precision air conditioner among all the rows;
and 7: according to the relation between the air output Mi and the fan frequency Fi, the fan frequency Fi of the precise air conditioner between the cold channel rows is synchronously adjusted through a frequency converter, and the relation between the fan frequency Fi and the air output Mi is calculated in a direct proportion mode or is obtained by further carrying out fitting through field measurement on the air output value under each frequency;
and 8: collecting the return air temperature Tij ', i is 1-n, j is 1-m of the jth inter-row precision air conditioner of the ith cold channel, judging whether the return air temperature Tij ' meets Tij ' < TH, and if the return air temperature Tij ' meets Tij ' < TH, finishing the regulation control; if Tij ' is greater than TH, the opening of the water valve of the inter-row precise air conditioner is increased, the flow of the chilled water is increased, when the opening of the water valve is maximum, if the return air temperature Tij ' is greater than TH, the frequency of a chilled water pump of a cold source system is increased, the flow of the chilled water of the whole air conditioning system is increased, and further the flow of the chilled water of the inter-row precise air conditioner is increased, when the frequency of the water pump reaches the upper limit of a set value, if the return air temperature Tij ' is greater than TH, the water outlet temperature of the chilled water of the cold source system is reduced, and when the water outlet temperature reaches the lower limit of the set value and the load factor of a refrigeration host reaches; when all return air temperatures T 'are monitored and T' < TH is met, entering step 9;
and step 9: collecting the return air temperature Txy ', x is 1-n, y is 1-m of the ith inter-row precision air conditioner of the xth cold channel, judging whether Txy' is greater than TL or not, and if yes, returning to the step 8; if Txy' < TL, reducing the water valve opening degree of the y-th inter-row precision air conditioner of the x-th cold channel and reducing the flow of the chilled water; judging whether Txy ' meets Txy ' > TL after the opening of the water valve is adjusted every time, if so, returning to the step 8, and if the return air temperature Txy ' < TL, continuously reducing the opening of the water valve; when the opening degree of the water valve is minimum, judging whether Txy ' meets Txy ' > TL, if yes, returning to the step 8, and if the return air temperature Txy ' < TL, increasing the temperature of the outlet water of the refrigeration host of the cold source system; judging whether Txy ' meets Txy ' > TL after the outlet water temperature of the chilled water is regulated each time, if so, returning to the step 8, and if the return air temperature Txy ' < TL, continuously increasing the outlet water temperature of the chilled water of the refrigeration host of the cold source system; when the temperature of the frozen outlet water reaches an upper limit value t1 and the load factor of the refrigeration host reaches a lower limit value, if the return air temperature Txy' < TL, the number of running refrigeration hosts is reduced; and if the return air temperature Txy' > TL, returning to the step 8.
The second aspect of the present invention further provides an IT load change-based inter-row precise air conditioner variable air volume regulation and control system for a data center, which is used for implementing the above-mentioned method for regulating and controlling the variable air volume of the inter-row precise air conditioner of the data center based on the IT load change, and includes: the inter-row precise air conditioners are used for directly providing cold energy for the rack IT equipment in the cold channel, different row head cabinets respectively supply power to the corresponding rack IT equipment in the same cold channel, and the total power consumption data of the rack IT equipment in each row is collected through the power consumption collecting device; further comprising: the system comprises a local server, a control module (PLC), an adjusting module, a network sensor module and a PLC sensor module; the local server is connected with the network sensor module in a 5G, NB-IoT or Ethernet mode, and is connected with the control module (PLC) in a 5G or Ethernet mode; the control module (PLC) is electrically connected with the PLC sensor module and the adjusting module; (ii) a
The local server comprises a database, a data acquisition program, a data processing program, a data interface program and the like. A data acquisition program acquires data of the network sensor module; the data processing program is used for processing various data acquired by the network sensor module and storing the data in a database in a classified manner; the data interface program sends the classified key control parameters to the control module (PLC);
the network sensor module comprises an air supply temperature sensor and a rack IT equipment power consumption acquisition device which are respectively used for acquiring each key parameter of the precision air conditioner between the machine room columns of the data center; the network sensor module is connected with the local server by adopting one or more of 5G, NB-IoT and Ethernet connection modes;
the PLC sensor module comprises a return air temperature sensor and a pressure sensor which are respectively used for collecting each key parameter of a cold channel and a hot channel of the precision air conditioner between the machine room columns of the data center; electrically connected to a control module (PLC);
the control module (PLC) is used for processing and calculating data of each key parameter collected in the PLC sensor module, the local server and the adjusting module, generating a control instruction according to the difference between the real-time value and the target value of the controlled variable, and sending the control instruction to the adjusting module;
and the adjusting module is used for accurately adjusting related equipment according to the control instruction provided by the control module (PLC) and returning the data of each key parameter to the control module (PLC). The adjusting module comprises an inter-row precise air conditioner fan frequency converter, an inter-row precise air conditioner water valve, a chilled water pump frequency converter, a refrigeration host outlet water temperature setting and a refrigeration host number setting, wherein the inter-row precise air conditioner fan frequency converter is used for controlling the fan frequency; the inter-row precise air-conditioning water valve is used for adjusting the opening degree of the water valve; the chilled water pump frequency converter is used for controlling the frequency of the chilled water pump; the outlet water temperature of the refrigeration main machine is set to be used for adjusting the outlet water temperature of the chilled water; the number of the refrigeration hosts is set to control the starting and stopping of the refrigeration hosts. The inter-row precise air-conditioning fan frequency converter and the inter-row precise air-conditioning water are controlled by a data computer room PLC; the frequency converter of the freezing water pump, the setting of the outlet water temperature of the refrigeration host and the setting of the number of the refrigeration hosts are controlled by a cold source host PLC.
According to a preferable technical scheme, the adjusting module comprises a frequency converter and a chilled water valve, the frequency converter comprises a fan frequency converter and a water pump frequency converter, the fan frequency converter and the water pump frequency converter are respectively used for controlling fan frequency and water pump frequency so as to adjust air supply quantity and chilled water flow, and the chilled water valve is used for controlling chilled water flow.
As a preferred technical scheme, the inter-row precise air conditioner is arranged in the cold channel and directly provides cold energy for the frame IT equipment.
As the preferred technical scheme, the accurate air-conditioning variable air volume regulating and controlling system between the data center machine rooms also comprises a local server;
and the local server is used for collecting and storing parameter data, calculation processing results and control instructions uploaded by the control module (PLC) and the network sensor module, and visually displaying the data.
As a preferable technical scheme, an air conditioning air variable regulation and control model is built in the control module (PLC), and the air conditioning air variable regulation and control model generates a control instruction according to a difference between a real-time value and a target value of a controlled variable and sends the control instruction to the regulation module.
As a preferred technical scheme, the system further comprises an ethernet/5G/NB-IoT platform and a cloud computing center, wherein the ethernet/5G/NB-IoT platform is connected to the network sensor module downward and connected to a local server upward, the local server collects historical operating parameter data generated by the network sensor module and the control module (PLC), and then transmits the historical operating parameter data to the cloud computing center through a 5G/4G network, the cloud computing center performs cloud computing processing based on the historical operating parameter data, optimizes the air-conditioning air variable regulation and control model, and then pushes the optimized air-conditioning air variable regulation and control model to the control module (PLC) through the 5G/4G network.
The intelligent terminal is communication equipment such as a mobile phone, a PC (personal computer), a PAD (PAD application program) and the like.
According to the method for regulating and controlling the variable air volume of the inter-row precise air conditioner of the data center based on IT load change, aiming at the condition that the loads of the frame IT equipment in the operation process of a data center machine room are changed, the frequency of the corresponding inter-row precise air conditioner fan is controlled by utilizing the real-time total power consumption of the frame IT equipment of each cold channel, the air supply volume is further controlled, the matching of the heat productivity of the equipment and the cold supply is realized, the operation energy consumption of the fan of the inter-row precise air conditioner can be greatly reduced, and the effects of saving energy and reducing emission of the data center are.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 shows a flow chart of a method for regulating and controlling variable air volume of a precision air conditioner between data center columns based on IT load change according to the present invention;
FIG. 2 is a flow chart of a method for adjusting cooling capacity of a cooling source system of a data center according to the present invention;
FIG. 3 shows a schematic top view of a data center room equipment arrangement of the present invention;
FIG. 4 is a schematic diagram showing a rack IT equipment power consumption acquisition device, a PLC, and a server connection multi-module connection in each computer room of the data center according to the invention;
FIG. 5 shows a PLC wiring schematic of the data room of the present invention;
FIG. 6 shows a PLC wiring diagram of the cold source of the present invention;
FIG. 7 shows a block diagram of a variable air volume control system of a data center inter-row precise air conditioner based on IT load change.
FIG. 8 is a schematic diagram of the inter-train precision air conditioning system of the present invention.
Reference numerals:
1. the device comprises a power consumption acquisition device of a column head cabinet and a rack IT device, 2, a rack and an IT device, 3, an air supply temperature sensor, 4, an inter-column precision air conditioner, 5, an air return temperature sensor, 6, a hot channel, 7, a hot channel pressure sensor, 8, a cold channel pressure sensor, 9, a cold channel, 10, an inter-column precision air conditioner chilled water electric valve, 11, an inter-column precision air conditioner heat exchanger and 12, an inter-column precision air conditioner fan.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1 to 3, a first aspect of the present invention provides a method for accurately regulating and controlling variable air volume of a precision air conditioner between columns in a data center machine room, and the method arranges the precision air conditioner 4 between multiple racks 2, and directly provides cooling capacity to the rack IT equipment 2 without using a plenum box, and simultaneously performs air volume regulation, and the method for regulating air volume comprises:
step 1: the data center is provided with n closed cold channels, pressure sensors are installed in all the cold channels and the hot channels, the ith cold channel pressure Pi and the hot channel pressure P0 are collected through the cold channel pressure sensors and the hot channel pressure sensors respectively, and the pressure difference delta Pi of the ith cold channel pressure Pi and the pressure difference delta Pi of the ith hot channel pressure P0 are calculated, wherein i is 1-n;
step 2: judging whether the pressure difference delta Pi meets delta PL < deltaPi < deltaPH; if yes, entering a step 3, and if not, entering a pressure difference adjusting process until the pressure difference delta P meets delta PL < deltaPi < deltaPH, wherein the delta PL is a set pressure difference lower limit value, and the delta PH is a set pressure difference upper limit value;
and step 3: collecting real-time operation power consumption of all rack IT equipment in the ith cold channel through a first cabinet;
and 4, step 4: calculating the power consumption sum Wi of all the rack IT equipment in the ith cold channel, neglecting the power consumption of the fans of the IT equipment, and enabling the total heating quantity Qi of the IT equipment to be equal to the total power consumption Wi of the IT equipment;
and 5: collecting the air supply temperature Tij of the jth inter-row precise air conditioner in the ith cold channel by an air supply temperature sensor, wherein m inter-row precise air conditioners are arranged in the cold channel, the value of j is 1-m, the upper limit value TH of the return air temperature is set, and the temperature difference delta Tij between the upper limit value TH of the set return air temperature and the air supply temperature Tij of each inter-row precise air conditioner is calculated;
step 6: supposing that the air supply volumes of m inter-row precise air conditioners in the ith cold channel are equal and are all Mi, passing through
C is the specific heat capacity of air so as to determine the air supply quantity Mi of the precision air conditioner among all the rows;
and 7: according to the relation between the air output Mi and the fan frequency Fi, the fan frequency Fi of the precise air conditioner between the cold channel rows is synchronously adjusted through a frequency converter, and the relation between the fan frequency Fi and the air output Mi is calculated in a direct proportion mode or is obtained by further carrying out fitting through field measurement on the air output value under each frequency;
and 8: collecting the return air temperature Tij ', i is 1-n, j is 1-m of the jth inter-row precision air conditioner of the ith cold channel, judging whether the return air temperature Tij ' meets Tij ' < TH, and if the return air temperature Tij ' meets Tij ' < TH, finishing the regulation control; if Tij ' is greater than TH, the opening of the water valve of the inter-row precise air conditioner is increased, the flow of the chilled water is increased, when the opening of the water valve is maximum, if the return air temperature Tij ' is greater than TH, the frequency of a chilled water pump of a cold source system is increased, the flow of the chilled water of the whole air conditioning system is increased, and further the flow of the chilled water of the inter-row precise air conditioner is increased, when the frequency of the water pump reaches the upper limit of a set value, if the return air temperature Tij ' is greater than TH, the water outlet temperature of the chilled water of the cold source system is reduced, and when the water outlet temperature reaches the lower limit of the set value and the load factor of a refrigeration host reaches; when all return air temperatures T 'have been monitored and T' < TH has been met, step 9 is entered.
And step 9: collecting the return air temperature Txy ', x is 1-n, y is 1-m of the ith inter-row precision air conditioner of the xth cold channel, judging whether Txy' is greater than TL or not, and if yes, returning to the step 8; if Txy' < TL, reducing the water valve opening degree of the y-th inter-row precision air conditioner of the x-th cold channel and reducing the flow of the chilled water; judging whether Txy ' meets Txy ' > TL after the opening of the water valve is adjusted every time, if so, returning to the step 8, and if the return air temperature Txy ' < TL, continuously reducing the opening of the water valve; when the opening degree of the water valve is minimum, judging whether Txy ' meets Txy ' > TL, if yes, returning to the step 8, and if the return air temperature Txy ' < TL, increasing the temperature of the outlet water of the refrigeration host of the cold source system; judging whether Txy ' meets Txy ' > TL after the outlet water temperature of the chilled water is regulated each time, if so, returning to the step 8, and if the return air temperature Txy ' < TL, continuously increasing the outlet water temperature of the chilled water of the refrigeration host of the cold source system; when the temperature of the frozen outlet water reaches an upper limit value t1 and the load factor of the refrigeration host reaches a lower limit, if the return air temperature Txy' < TL and the load factor of the refrigeration host reaches the lower limit, the number of running refrigeration hosts is reduced; and if the return air temperature Txy' > TL, returning to the step 8.
To further illustrate the adjustment method of the above step 1 to step 9, the following description will be made in detail with reference to specific example 1.
step S1: the data center is provided with 10 closed cold channels, pressure sensors are installed in all the cold channels and the hot channels, the pressure of the 2 nd cold channel is 1.0Kpa and the pressure of the hot channel is 1.8Kpa, the pressure and the pressure are transmitted to a control module (PLC), and the pressure difference is calculated to be 0.8 Kpa.
Step S2: the control module (PLC) determines whether or not the absolute value of 0Kpa <. DELTA.P 2<0.5Kpa in a predetermined interval. If the differential pressure is not within the range of-0.8 Kpa, the differential pressure regulation is carried out. And transmitting control parameters to an inter-row precise air-conditioning fan frequency converter in the regulating module through a control module (PLC), increasing the inter-row precise air-conditioning fan frequency, and ensuring that the pressure difference is 0.1Kpa and meets the requirement that 0< DELTAP 2 is less than 0.5 Kpa.
Step S3: the data center is provided with 20 rows of racks, a row head cabinet is installed at the row head of each row of racks, and rack IT equipment power consumption acquisition devices are installed in all the row head cabinets and used for acquiring the real-time operation power consumption of all the rack IT equipment in the 2 nd cold channel.
Step S4: real-time operation power consumption data of all rack IT equipment in the 2 nd cold aisle is transmitted to the local server, calculates all IT equipment power consumption sum 50KW in the 2 nd cold aisle, ignores the fan power consumption, and total calorific capacity of IT equipment is approximately equal to the total power consumption of IT equipment.
Step S5: the 2 nd cooling channel has 6 inter-row precise air conditioners, the air supply temperature of each inter-row precise air conditioner is respectively 18 ℃, 19 ℃, 17 ℃, 18.5 ℃, 17.8 ℃ and 19 ℃, the upper limit value of the set return air temperature is 41 ℃, and the temperature difference between the air supply temperature and the set return air temperature is calculated to be 23 ℃, 22 ℃, 24 ℃, 22.5 ℃, 23.2 ℃ and 22 ℃.
Step S6: by heat generation
C is the specific heat capacity of air, about 1.005KJ/(kg x k), the total air supply quantity of the 2 nd cold channel inter-row precise air conditioner is determined to be 1310kg, and the air supply quantity of the 2 nd cold channel 6 inter-row precise air conditioner is equal to 218 kg.
Step S7: according to the relation between the air supply volume and the fan frequency, the fan frequency of the 2 nd cold channel 6 inter-row precision air conditioner is calculated to be 40Hz, key control parameters are transmitted to a control module (PLC) through a local server data interface, the control module (PLC) issues key parameter instructions to an inter-row precision air conditioner frequency converter in an adjusting module, and the fan frequency of the 2 nd cold channel 6 inter-row precision air conditioner is synchronously adjusted to be 40 Hz.
Step S8: the return air temperature T is collected by the return air temperature sensor 521Transmitting the temperature of 39 ℃ to a control module (PLC), and judging whether the temperature meets 40 ℃ in the control module (PLC)<T21’<And the temperature is 41 ℃, the regulation of the cooling capacity of the chilled water system of the precision air conditioner entering the space between the columns is not met. When the temperature is 39 DEG C<At 40 ℃, the control module (PLC) transmits a key parameter instruction to the adjusting module, reduces the water valve opening degree of the 1 st inter-row precision air conditioner of the 2 nd cold channel by adjusting the inter-row precision air conditioner water valve, and collects the return air temperature T by the return air temperature sensor again21' -40.2 ℃ and 40.2 ℃ in the interval 40 DEG C<T21’<The adjustment was completed within 41 ℃.
As shown in fig. 3, the inter-row precise air conditioners 4 are directly arranged between the racks 2, the frequency of the fan is adjusted through the actual operation power consumption of the rack IT equipment 1, cold air is blown into the cold channel 2 through the air outlet, hot air is discharged from the outer side of the rack IT equipment 1 and then enters the inter-row precise air conditioners 4 to form return air, and therefore the purpose of heat dissipation is achieved.
As shown in fig. 4, in the implementation process of collecting the power consumption of the rack IT device, the invention is implemented by the first cabinet of each row of racks, and the power consumption data of the rack IT device is transmitted to the local server; the control module (PLC) comprises each data machine room PLC and a cold source PLC and is connected with the local server; the data machine room PLC and the cold source PLC acquire key parameter information and transmit the key parameter information to the local server, and the data center PLC and the cold source PLC perform key parameter data interaction through the local server.
As shown in fig. 5, the PLC of the data room of the present invention is connected to the inter-row precise air conditioner, collects data information of temperature, water valve opening and fan frequency, and collects data information of cold and hot channel pressure through the pressure sensor; and the PLC of the data computer room controls a water valve driver and a fan frequency converter of the inter-row precise air conditioner.
As shown in FIG. 6, the cold source PLC is connected with the refrigeration hosts 1-6, and collects the outlet water temperature of the chilled water, the number of the started refrigeration hosts and the load rate of the refrigeration hosts; the cold source PLC controls the set temperature of the refrigeration host, the number of the refrigeration hosts and the frequency converter of the refrigeration water pump; the refrigeration host sets the temperature and is used for adjusting the outlet water temperature of the chilled water, and the frequency converter of the chilled water pump is used for adjusting the flow of the chilled water.
The invention can regulate and control the cold quantity of the corresponding inter-row precise air conditioner according to the real-time power consumption of the frame IT equipment in the same cold channel, so that the heat productivity of the equipment is matched with the supply of the cold quantity, thereby reducing the energy consumption of the inter-row precise air conditioner system.
FIG. 7 shows a block diagram of a variable air volume control system of a data center inter-row precise air conditioner based on IT load change.
As shown in fig. 7, the second aspect of the present invention further provides an inter-data center row precise air conditioning variable air volume control system based on IT load change, which is used to implement the above-mentioned inter-data center row precise air conditioning variable air volume control method based on IT load change, and includes: different inter-row precise air conditioners in the same cold channel directly provide cold energy for the frame IT equipment by bypassing the static pressure box; further comprising: the system comprises a local server, a control module (PLC), an adjusting module, a network sensor module and a PLC sensor module; the local server is connected with the network sensor module in a 5G, NB-IoT or Ethernet mode, and is connected with the control module (PLC) through a 5G or Ethernet; the control module (PLC) is electrically connected with the PLC sensor module and the adjusting module;
the local server comprises a database, a data acquisition program, a data processing program, a data interface program and the like. A data acquisition program acquires data of the network sensor module; the data processing program is used for processing various data acquired by the network sensor module and storing the data in a database in a classified manner; the data interface program sends the classified key control parameters to the control module (PLC);
the network sensor module comprises an air supply temperature sensor and a rack IT equipment power consumption acquisition device which are respectively used for acquiring each key parameter of the precision air conditioner between the machine room columns of the data center; the network sensor module is connected with the local server by adopting one or more of 5G, NB-IoT and Ethernet connection modes;
the PLC sensor module comprises a return air temperature sensor and a pressure sensor which are respectively used for collecting each key parameter of a cold channel and a hot channel of the precision air conditioner between the machine room columns of the data center; electrically connected to a control module (PLC);
the control module (PLC) is used for processing and calculating data of each key parameter collected in the PLC sensor module, the local server and the adjusting module, generating a control instruction according to the difference between the real-time value and the target value of the controlled variable, and sending the control instruction to the adjusting module;
and the adjusting module is used for accurately adjusting related equipment according to the control instruction provided by the control module (PLC) and returning the data of each key parameter to the control module (PLC). The adjusting module comprises an inter-row precise air conditioner fan frequency converter, an inter-row precise air conditioner water valve, a chilled water pump frequency converter, a refrigeration host outlet water temperature setting and a refrigeration host number setting, wherein the inter-row precise air conditioner fan frequency converter is used for controlling the fan frequency; the inter-row precise air-conditioning water valve is used for adjusting the opening degree of the water valve; the chilled water pump frequency converter is used for controlling the frequency of the chilled water pump; the outlet water temperature of the refrigeration main machine is set to be used for adjusting the outlet water temperature of the chilled water; the number of the refrigeration hosts is set for starting and stopping the refrigeration hosts. The inter-row precise air-conditioning fan frequency converter and the inter-row precise air-conditioning water are controlled by a data computer room PLC; the frequency converter of the freezing water pump, the setting of the outlet water temperature of the refrigeration host and the setting of the number of the refrigeration hosts are controlled by a cold source host PLC.
Furthermore, the inter-row precise air conditioner is arranged in the cold channel and directly provides cold energy for the frame IT equipment.
Furthermore, the system for accurately regulating and controlling the variable air volume of the precise air conditioner between the rows of the data center machine room also comprises a local server;
and the local server is used for collecting and storing the parameter data, the calculation processing result and the control instruction uploaded by the control module (PLC), and visually displaying the data.
Further, an air conditioning variable regulation and control model is built in the control module (PLC), and the air conditioning variable regulation and control model generates a control instruction according to a difference between a real-time value and a target value of a controlled variable and sends the control instruction to the regulation module.
Further, the system further comprises an NB-IoT platform and a cloud computing center, wherein the NB-IoT platform is connected with the network sensor module downwards and connected with a local server upwards, the local server collects historical operating parameter data generated by the network sensor module and the control module (PLC), then the historical operating parameter data are transmitted to the cloud computing center through a 5G/4G network, the cloud computing center performs cloud computing processing based on the historical operating parameter data, optimizes the air conditioner air variable regulation and control model, and then the optimized air conditioner air variable regulation and control model is pushed to the control module (PLC) through the 5G/4G network.
The system also comprises a wireless router, a WIFI module is arranged in the inter-column precise air conditioner, and the inter-column precise air conditioner realizes the access of the Internet of things through the WIFI module and the wireless router; the system further comprises an intelligent terminal, the intelligent terminal is in communication connection with the wireless router through a 5G/4G network, the WIFI module of the inter-row precise air conditioner is in WIFI connection with the wireless router, and the intelligent terminal can remotely control the inter-row precise air conditioner.
The third aspect of the present invention further provides a computer readable storage medium, where the computer readable storage medium includes a program of a method for accurately regulating and controlling variable air volume of a precision air conditioner between columns in a data center machine room, and when the program of the method for accurately regulating and controlling variable air volume of a precision air conditioner between columns in a data center machine room is executed by a processor, the steps of the method for regulating and controlling variable air volume of a precision air conditioner between columns in a data center based on IT load change are implemented.
The invention provides an IT load change-based inter-row precise air conditioner variable air volume regulation and control method for a data center, aiming at the condition that rack loads change in the operation process of a data center machine room, the frequency of a corresponding inter-row precise air conditioner fan is controlled by using the real-time total power consumption of each cold channel rack IT equipment, the air supply quantity is further controlled, the matching of the equipment heating quantity and the cold quantity supply is realized, the operation energy consumption of the inter-row precise air conditioner fan can be greatly reduced, and the effects of saving energy and reducing emission of the data center are achieved.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, an IT device, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A method for regulating and controlling variable air volume of a precise air conditioner between data center columns based on IT load change is characterized in that,
step 1: the data center is provided with n closed cold channels, pressure sensors are installed in all the cold channels and the hot channels, the ith cold channel pressure Pi and the hot channel pressure P0 are collected through the cold channel pressure sensors and the hot channel pressure sensors respectively, and the pressure difference delta Pi of the ith cold channel pressure Pi and the pressure difference delta Pi of the ith hot channel pressure P0 are calculated, wherein i is 1-n;
step 2: judging whether the pressure difference delta Pi meets delta PL < deltaPi < deltaPH; if yes, entering a step 3, and if not, entering a pressure difference adjusting process until the pressure difference delta P meets delta PL < deltaPi < deltaPH, wherein the delta PL is a set pressure difference lower limit value, and the delta PH is a set pressure difference upper limit value;
and step 3: collecting real-time operation power consumption of all rack IT equipment in the ith cold channel through a first cabinet;
and 4, step 4: calculating the power consumption sum Wi of all the rack IT equipment in the ith cold channel, neglecting the power consumption of the fans of the IT equipment, and enabling the total heating quantity Qi of the IT equipment to be equal to the total power consumption Wi of the IT equipment;
and 5: collecting the air supply temperature Tij of the jth inter-row precise air conditioner in the ith cold channel by an air supply temperature sensor, wherein m inter-row precise air conditioners are arranged in the cold channel, the value of j is 1-m, the upper limit value TH of the return air temperature is set, and the temperature difference delta Tij between the upper limit value TH of the set return air temperature and the air supply temperature Tij of each inter-row precise air conditioner is calculated;
step 6: supposing that the air supply volumes of m inter-row precise air conditioners in the ith cold channel are equal and are all Mi, passing through
C is the specific heat capacity of air so as to determine each rowThe air supply quantity Mi of the indirect precision air conditioner;
and 7: according to the relation between the air output Mi and the fan frequency Fi, the fan frequency Fi of the precise air conditioner between the cold channel rows is synchronously adjusted through a frequency converter, and the relation between the fan frequency Fi and the air output Mi is calculated in a direct proportion mode or is obtained by further carrying out fitting through field measurement on the air output value under each frequency;
and 8: collecting the return air temperature Tij ', i is 1-n, j is 1-m of the jth inter-row precision air conditioner of the ith cold channel, judging whether the return air temperature Tij ' meets Tij ' < TH, and if the return air temperature Tij ' meets Tij ' < TH, finishing the regulation control; if Tij ' is greater than TH, the opening of the water valve of the inter-row precise air conditioner is increased, the flow of the chilled water is increased, when the opening of the water valve is maximum, if the return air temperature Tij ' is greater than TH, the frequency of a chilled water pump of a cold source system is increased, the flow of the chilled water of the whole air conditioning system is increased, and further the flow of the chilled water of the inter-row precise air conditioner is increased, when the frequency of the water pump reaches the upper limit of a set value, if the return air temperature Tij ' is greater than TH, the water outlet temperature of the chilled water of the cold source system is reduced, and when the water outlet temperature reaches the lower limit of the set value and the load factor of a refrigeration host reaches; when all return air temperatures T 'are monitored and T' < TH is met, entering step 9;
and step 9: collecting the return air temperature Txy ', x is 1-n, y is 1-m of the ith inter-row precision air conditioner of the xth cold channel, judging whether Txy' is greater than TL or not, and if yes, returning to the step 8; if Txy' < TL, reducing the water valve opening degree of the y-th inter-row precision air conditioner of the x-th cold channel and reducing the flow of the chilled water; judging whether Txy ' meets Txy ' > TL after the opening of the water valve is adjusted every time, if so, returning to the step 8, and if the return air temperature Txy ' < TL, continuously reducing the opening of the water valve; when the opening degree of the water valve is minimum, judging whether Txy ' meets Txy ' > TL, if yes, returning to the step 8, and if the return air temperature Txy ' < TL, increasing the temperature of the outlet water of the refrigeration host of the cold source system; judging whether Txy ' meets Txy ' > TL after the outlet water temperature of the chilled water is regulated each time, if so, returning to the step 8, and if the return air temperature Txy ' < TL, continuously increasing the outlet water temperature of the chilled water of the refrigeration host of the cold source system; when the temperature of the frozen outlet water reaches an upper limit value t1 and the load factor of the refrigeration host reaches a lower limit value, if the return air temperature Txy' < TL, the number of running refrigeration hosts is reduced; and if the return air temperature Txy' > TL, returning to the step 8.
2. The method for regulating and controlling the variable air volume of the precise air conditioner among the data center columns based on the IT load change as claimed in claim 1, wherein the following differential pressure regulation process of step 2 has a priority level higher than that of step 1 in order to ensure the safe operation of IT equipment, and specifically comprises:
step 2-1: if the pressure difference delta Pi is smaller than the set pressure difference lower limit value delta PL, the frequency Fi of the precise air-conditioning fan between the i-th cold channel rows is synchronously increased through a frequency converter; if the pressure difference delta Pi is larger than the set pressure difference upper limit value delta PH, the frequency Fi of the precise air conditioner fan between the i-th cold channel rows is synchronously reduced through a frequency converter;
step 2-2: judging whether the pressure difference delta Pi is within an interval delta PL <. delta Pi <. delta PH, if so, ending the pressure difference adjusting process, and if not, returning to the step 2-1 to continue pressure difference adjustment until the pressure difference delta Pi meets the pressure difference delta PL <. delta Pi <. delta PH.
3. The method for regulating and controlling the variable air volume of the precision air conditioner between the data center columns based on the IT load change according to claim 1, wherein the step 8 specifically comprises the following steps:
step 8-1: judging whether the air return temperature Tij 'of the inter-row precise air conditioner is greater than a set air return temperature upper limit value TH, and entering a step 8-2 if the air return temperature Tij' is greater than the set air return temperature upper limit value TH; if not, ending the regulation control;
step 8-2: opening a large water valve opening Aij of a jth inter-row precision air-conditioning chilled water system of an ith cold channel, judging whether the return air temperature Tij' is greater than a set return air temperature upper limit value TH, if so, ending the regulation process, and if so, entering the step 8-3;
step 8-3: judging whether the opening Aij of the water valve is maximum, if not, returning to the step 8-2, and if so, entering the step 8-4;
step 8-4: increasing the frequency f of a chilled water pump of a cold source system through a frequency converter, increasing the flow of chilled water of the whole air conditioning system, further increasing the flow of chilled water of the inter-row precise air conditioners, judging whether the return air temperature Tij' is greater than a set return air temperature upper limit value TH, if so, ending the regulation process, and if so, entering the step 8-5;
and 8-5: judging whether the water pump frequency f reaches an upper limit value fh, if not, returning to the step 8-4, and if so, entering the step 8-6;
and 8-6: reducing the water outlet temperature t of a refrigeration host of a cold source system, judging whether the return air temperature Tij ' is greater than a set return air temperature upper limit value TH, ending the adjusting process if the return air temperature Tij ' is less than the set return air temperature upper limit value TH, and entering the step 8-7 if the return air temperature Tij ' is greater than the set return air temperature upper limit value TH;
and 8-7: judging whether the outlet water temperature t of the refrigeration host of the cold source system is adjusted to a lower limit value t0, if so, entering the step 8-8, and if so, returning to the step 8-6;
and 8-8: when the outlet water temperature reaches the lower limit of the set value and the load rate of the refrigeration host reaches the upper limit, if the return air temperature Tij' is greater than TH, the number of running refrigeration hosts is increased; when all return air temperatures T 'have been monitored and T' < TH has been met, step 9 is entered.
4. The method for regulating and controlling the variable air volume of the precision air conditioner between the data center columns based on the IT load change according to claim 1, wherein the step 9 specifically comprises:
step 9-1: judging whether the air return temperature Txy' of the inter-row precise air conditioner is smaller than the set air return temperature lower limit value TL, if so, entering the step 9-2, otherwise, returning to the step 8;
step 9-2: reducing the opening Axy of a water valve of the precision air-conditioning chilled water system between the ith row of the xth cold channel, judging whether the return air temperature Txy ' is less than the set return air temperature lower limit value TL, returning to the step 8 if the return air temperature Txy ' is greater than the set return air temperature lower limit value TL, and entering the step 9-3 if the return air temperature Txy ' is less than the set return air temperature lower limit value TL;
step 9-3: judging whether the opening Axy of the water valve reaches a lower threshold value, if not, returning to the step 9-2, and if so, entering the step 9-4;
step 9-4: increasing the outlet water temperature t of the refrigeration host of the cold source system, judging whether Txy' is less than a set return air temperature lower limit value TL, entering the step 9-5 if the condition is satisfied, and returning to the step 8 if the condition is not satisfied;
step 9-5: judging whether the outlet water temperature t of the refrigeration host reaches an upper limit value t1, if so, returning to the step 9-4, and if so, entering the step 9-6;
and 9-6: judging whether the load rate of the refrigeration host reaches a lower limit and the number of running hosts is greater than the lower limit, and if the condition is met, reducing the number of running hosts; and if the return air temperature Txy' > TL, returning to the step 8.
5. An IT load change-based variable air volume regulation and control system for a data center inter-column precise air conditioner, which is used for realizing the IT load change-based variable air volume regulation and control method for the data center inter-column precise air conditioner, according to any one of claims 1 to 4, and is characterized by comprising the following steps: the inter-row precise air conditioners are used for directly providing cold energy for the rack IT equipment in the cold channel, different row head cabinets respectively supply power to the corresponding rack IT equipment in the same cold channel, and the total power consumption data of the rack IT equipment in each row is collected through the power consumption collecting device; further comprising: the system comprises a local server, a control module (PLC), an adjusting module, a network sensor module and a PLC sensor module; the local server is connected with the network sensor module in a 5G, NB-IoT or Ethernet mode, and is connected with the control module in a 5G or Ethernet mode; the control module (PLC) is electrically connected with the PLC sensor module and the adjusting module;
the local server comprises a database, a data acquisition program, a data processing program and a data interface program; a data acquisition program acquires data of the network sensor module; the data processing program is used for processing various data acquired by the network sensor module and storing the data in a database in a classified manner; the data interface program sends the classified key control parameters to the control module (PLC);
the network sensor module comprises an air supply temperature sensor and a rack IT equipment power consumption acquisition device which are respectively used for acquiring each key parameter of the precision air conditioner between the machine room columns of the data center; the network sensor module is connected with the local server by adopting one or more of 5G, NB-IoT and Ethernet connection modes;
the PLC sensor module comprises a return air temperature sensor and a pressure sensor which are respectively used for collecting each key parameter of a cold channel and a hot channel of the precision air conditioner between the machine room columns of the data center; electrically connected to a control module (PLC);
the control module (PLC) is used for processing and calculating data of each key parameter collected in the PLC sensor module, the local server and the adjusting module, generating a control instruction according to the difference between the real-time value and the target value of the controlled variable, and sending the control instruction to the adjusting module;
and the adjusting module is used for accurately adjusting related equipment according to the control instruction provided by the control module (PLC) and returning the data of each key parameter to the control module (PLC). The adjusting module comprises an inter-row precise air conditioner fan frequency converter, an inter-row precise air conditioner water valve, a chilled water pump frequency converter, a refrigeration host outlet water temperature setting and a refrigeration host number setting, wherein the inter-row precise air conditioner fan frequency converter is used for controlling the fan frequency; the inter-row precise air-conditioning water valve is used for adjusting the opening degree of the water valve; the chilled water pump frequency converter is used for controlling the frequency of the chilled water pump; the outlet water temperature of the refrigeration main machine is set to be used for adjusting the outlet water temperature of the chilled water; the number of the refrigeration hosts is set for starting and stopping the refrigeration hosts. The inter-row precise air-conditioning fan frequency converter and the inter-row precise air-conditioning water are controlled by a data computer room PLC; the frequency converter of the freezing water pump, the setting of the outlet water temperature of the refrigeration host and the setting of the number of the refrigeration hosts are controlled by a cold source host PLC.
6. The data center inter-row precise air conditioner variable air volume regulation and control system based on IT load change of claim 5, characterized in that the inter-row precise air conditioner is arranged in a cold channel to directly provide cold for IT equipment of a rack.
7. The IT load change-based inter-row precise air conditioning variable air volume regulation and control system for the data center, according to claim 5, is characterized by further comprising a local server;
and the local server is used for collecting and storing parameter data, calculation processing results and control instructions uploaded by the control module (PLC) and the network sensor module, and visually displaying the data.
8. The IT load change-based inter-train precise air conditioning variable air volume regulation and control system of a data center, as claimed in claim 5, wherein an air conditioning variable air volume regulation and control model is built in the control module (PLC), the air conditioning variable air volume regulation and control model generates a control command according to a difference between a real-time value and a target value of a controlled variable, and sends the control command to the regulation module.
9. The IT load change-based variable air volume regulating and controlling system for the precision air conditioner among the data center columns according to claim 8, the system also includes an ethernet/5G/NB-IoT platform and a cloud computing center, the Ethernet/5G/NB-IoT platform is connected with the network sensor module downwards and connected with a local server upwards, the local server collects historical operation parameter data generated by the network sensor module and the control module (PLC), then the data are transmitted to the cloud computing center through a 5G/4G network, the cloud computing center carries out cloud computing processing based on historical operating parameter data and optimizes an air conditioning air variable regulation and control model, and then, the optimized air conditioning air variable regulation and control model is pushed to the control module (PLC) through a 5G/4G network.
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