CN111615309B - Method and system for planning air duct of precise air conditioner of data center machine room and adjusting variable air volume - Google Patents

Method and system for planning air duct of precise air conditioner of data center machine room and adjusting variable air volume Download PDF

Info

Publication number
CN111615309B
CN111615309B CN202010492757.2A CN202010492757A CN111615309B CN 111615309 B CN111615309 B CN 111615309B CN 202010492757 A CN202010492757 A CN 202010492757A CN 111615309 B CN111615309 B CN 111615309B
Authority
CN
China
Prior art keywords
air
temperature
cold
data center
limit value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010492757.2A
Other languages
Chinese (zh)
Other versions
CN111615309A (en
Inventor
闫军威
陈城
何敏
徐志立
马彦喆
乔富荣
黄琪
字学辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou I Mec Intelligent Technology Co ltd
Original Assignee
Guangzhou I Mec Intelligent Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou I Mec Intelligent Technology Co ltd filed Critical Guangzhou I Mec Intelligent Technology Co ltd
Priority to CN202010492757.2A priority Critical patent/CN111615309B/en
Publication of CN111615309A publication Critical patent/CN111615309A/en
Application granted granted Critical
Publication of CN111615309B publication Critical patent/CN111615309B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20718—Forced ventilation of a gaseous coolant
    • H05K7/20745—Forced ventilation of a gaseous coolant within rooms for removing heat from cabinets, e.g. by air conditioning device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a method and a system for air duct planning and variable air volume adjusting of a precision air conditioner of a data center machine room, which can control the opening of a branch static pressure box air valve corresponding to each cold channel based on the real-time total power of each cold channel aiming at the condition that the load of a rack server changes in the operation process of the data center machine room, further control the air supply volume of the air conditioner, realize the matching of the heat productivity of equipment and the cold load supply, greatly reduce the operation energy consumption of the precision air conditioner, and reduce the PUE value of the data center by combining the energy-saving optimization control of a cold source system.

Description

Method and system for planning air duct of precise air conditioner of data center machine room and adjusting variable air volume
Technical Field
The invention relates to the technical field of energy conservation of data center air conditioning systems, in particular to a method and a system for planning air ducts and adjusting variable air volume of precise air conditioners of a data center machine room.
Background
In recent years, with the rapid development of new-generation information technology, data centers are used as important infrastructures, and are carriers for various applications such as big data, artificial intelligence, AR/VR, industrial internet of things, smart cities, smart energy, smart finance, 5G and the like, and the scale of the data centers is increased explosively. Because the energy consumption of the air conditioning system of the data center is dozens of times of that of the conventional public building due to the large heat dissipation capacity of the IT equipment, the energy-saving design of the air conditioning system of the data center is particularly important.
Most of existing data center air conditioning ventilation systems adopt a rough design that cool air is firstly introduced into an empty underground layer and then is uniformly discharged through various ground ventilation openings, and the equipment density, the real-time change of equipment load and the difference of cooling load among different areas of a machine room are not considered, so that the situations that a temperature field is not uniform and an air conditioning system runs under high load often occur in a data center, and unnecessary energy waste is caused.
Therefore, a novel data center precision air conditioning air duct is designed, fine regulation and control of air quantities of different areas of the data center are achieved, and the data center precision air conditioning air duct has important practical significance.
Disclosure of Invention
In order to solve at least one technical problem, the invention provides a method and a system for planning an air duct of a precise air conditioner of a data center machine room and adjusting variable air volume, which can adjust and control the air volume and the cold volume of each cold channel according to the real-time power of a rack server in the same cold channel, and adjust the air volume and the refrigerating volume of the precise air conditioner according to the load requirements of different cold channels, thereby reducing the energy consumption of a precise air conditioning system.
In order to achieve the above object, a first aspect of the present invention provides a method for air duct planning and air volume regulation of a data center machine room precision air conditioner, wherein a plurality of precision air conditioners discharge cold air to a main static pressure box together, the main static pressure box is divided into a plurality of sub static pressure boxes by a sub static pressure box air valve, the plurality of sub static pressure boxes release cold air to each cold air duct in the data center machine room, and perform air volume regulation, the method for air volume regulation comprises:
step 1: collecting real-time power Q of each rack server through a column head cabinet of each machine room;
step 2: calculating the sum W of the real-time power of all the rack servers in the same cold channeliAccording to the real-time power sum WiAdjusting the opening D of the air valve of the corresponding sub-static pressure boxiTo the set value;
and step 3: collecting data P of pressure sensor of each cold channeliData P with hot channel pressure sensor0Calculating the pressure difference delta P1 between the two;
and 4, step 4: if the pressure difference delta P1 is greater than the set pressure difference delta P1(set)Entering step 6, otherwise entering step 5;
and 5: increase the opening D of the air valve of the sub-static pressure boxiUntil the differential pressure Δ P1 is equal to the set differential pressure Δ P1(set)；
And 6: collecting data P of a hydrostatic tank pressure sensor0According to said numberAccording to P0' and the data PiCalculating the pressure difference delta P2 between the cold channel and the static pressure box;
and 7: if the pressure difference delta P2 is greater than the set pressure difference delta P2L(set)Less than a set pressure differential Δ P2H(set)Step 9 is entered, otherwise step 8 is entered;
and 8: adjusting the air quantity of the precision air conditioner until the differential pressure delta P2 is greater than the set differential pressure delta P2L(set)Less than Δ P2H(set)；
And step 9: data T of temperature sensor of each cold channel is collectedi；
Step 10: if the temperature T of the cold aisleiIf the temperature is equal to the set temperature T0, finishing the regulation, otherwise, entering the step 11;
step 11: adjusting the cooling capacity of the cold source system until the temperature T of the cold channeliEqual to the set temperature T0, and this regulation is ended.
As a preferred technical solution, the step 2 specifically includes:
according to the real-time power sum W of all rack serversiThe percentage n% of the corresponding opening of the air valve of the sub-static pressure box is obtained by calculating the proportion between the percentage n% and the total rated power;
and the programmable controller determines the opening degree of the corresponding sub-static pressure box air valve according to the percentage n%.
As a preferred technical solution, the step 8 specifically includes:
step 8-1: judging whether the pressure difference delta P2< (delta P2L (set) or the pressure difference delta P2> -delta P2H (set) is established or not, if the pressure difference delta P2< (delta P2L) (set), improving the fan frequency of the precision air conditioner, and if the pressure difference delta P2> -delta P2H (set), reducing the fan frequency of the precision air conditioner;
step 8-2: and (3) judging whether the differential pressure delta P2 is within a section delta P2L (set < delta P2< deltaP 2H (set), ending the air volume control of the precision air conditioner if the differential pressure delta P2 is within the section, and returning to the step 8-1 to continue the air volume adjustment if the differential pressure delta P2 is not within the section delta P2L (set < deltaP 2< deltaP 2H (set)).
As a preferred technical solution, the step 11 specifically includes:
step 11-1-1: judging the temperature T of the cold pathiWhether the value is greater than a set value T0 or not, if so, entering a step 11-1-2;
step 11-1-2: opening the opening Ai of a water valve of the cold source system, judging whether the temperature Ti of the cold channel is greater than a set value T0, if so, ending the adjusting process, and if so, entering the step 11-1-3;
step 11-1-3: judging whether the opening Ai of the water valve is maximum, if not, returning to the step 11-1-2, and if so, entering the step 11-1-4;
step 11-1-4: improve water pump frequency W of cold source systemi' judging whether the cold channel temperature Ti is greater than a set value T0, if so, ending the adjusting process, and if so, entering the step 11-1-5;
step 11-1-5: judging water pump frequency WiWhether the upper limit value W0 is reached or not is judged, if the upper limit value W0 is not reached, the step is returned to the step 11-1-4, and if the upper limit value W0 is reached, the step is returned to the step 11-1-6;
step 11-1-6: reducing the outlet water temperature T of the cold source system, judging whether the cold channel temperature Ti is greater than a set value T0, if the cold channel temperature Ti is less than a set value T0, finishing the adjusting process, and if the cold channel temperature Ti is greater than a set value T0, entering the step 11-1-7;
step 11-1-7: judging whether the outlet water temperature t of the cold source system is less than a lower limit value t0, if the outlet water temperature t is less than the lower limit value t0, finishing the regulation, and if the outlet water temperature t is more than the lower limit value t0, returning to the step 11-1-6;
as a preferred technical solution, the step 11 specifically further includes:
step 11-1-1: judging the temperature T of the cold pathiWhether the value is greater than a set value T0 or not, and if the value is less than the set value T0, the step 11-2-1 is carried out;
step 11-2-1: reducing the opening Ai of the water valve, judging whether the temperature Ti of the cold channel is less than a set value T1, if so, ending the adjusting process, and if not, entering the step 11-2-2;
step 11-2-2: judging whether the opening degree of the valve reaches a lower threshold value, if not, returning to the step 11-2-1, and if so, entering the step 11-2-3;
step 11-2-3: reduce the frequency W of the water pumpi' judging whether the cold channel temperature Ti is less than a set value T1, if so, ending the adjusting process, and if so, ending the adjusting processThen step 11-2-4 is entered;
step 11-2-4: judging the frequency W of the water pumpiIf the lower limit value W1 is reached, returning to the step 11-2-3 if the lower limit value W1 is not reached, and entering the step 11-2-5 if the upper limit value is reached;
step 11-2-5: increasing the water outlet temperature T of the water system, judging whether the cold channel temperature Ti is less than a set value T1, if so, ending the adjusting process, and if not, entering the step 11-2-6;
step 11-2-6: and (4) judging whether the water outlet temperature t reaches an upper limit value t1, finishing the regulation when the water outlet temperature t reaches the upper limit value, and returning to the step 11-2-5 when the water outlet temperature t is smaller than the upper limit value.
Preferably, the temperature T0 is set to 22 ℃, and the pressure difference delta P1 is set(set)For 1KPa, set pressure differential Δ P2L(set)For 1KPa, set pressure differential Δ P2H(set)Is 2 KPa.
Preferably, the upper limit value W0 is 50Hz, and the lower limit value t0 is 7 ℃; the lower limit value W1 is 20Hz, and the upper limit value t1 is 10 ℃.
The second aspect of the present invention further provides a system for planning an air duct of a precision air conditioner in a data center machine room and adjusting a variable air volume, which is used for implementing the method for planning the air duct of the precision air conditioner in the data center machine room and adjusting the variable air volume, and comprises: the system comprises a main static pressure box, a plurality of precision air conditioners and a plurality of sub static pressure boxes, wherein the main static pressure box is connected with the sub static pressure boxes, a sub static pressure box air valve is arranged at the connection part, the precision air conditioners discharge cold air to the main static pressure box together, the main static pressure box is divided into the sub static pressure boxes through the sub static pressure box air valves, and the sub static pressure boxes release the cold air to each cold channel in a data center machine room; further comprising: the device comprises a control module, a regulating module and a sensor module; the control module is respectively and electrically connected with the sensor module and the adjusting module;
the sensor module comprises a pressure sensor, a temperature sensor, a rack server power acquisition device and a fan frequency acquisition device, and is respectively used for acquiring each key parameter of the precise air conditioner of the data center machine room;
the control module is used for processing and calculating data of each key parameter acquired by the sensor 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;
the adjusting module is used for accurately adjusting the air quantity of the cold channel, the fan frequency and the freezing water flow according to a control instruction provided by the control module, and comprises a freezing water valve, a frequency converter and a sub-static pressure box air valve, wherein the freezing water valve is used for controlling the freezing water flow, the frequency converter comprises a fan frequency converter and a freezing water pump frequency converter and is respectively used for controlling the fan frequency and the freezing water pump frequency so as to adjust the air supply quantity and the freezing water flow, and the sub-static pressure box air valve is used for controlling the air quantity.
As a preferred technical scheme, two adjacent partial static pressure boxes are mutually separated by a channel partition plate so as to avoid air circulation between the two adjacent partial static pressure boxes.
As a preferred technical scheme, the air duct planning and variable air volume adjusting system of the precise air conditioner of the data center machine room further comprises a local server;
the local server is electrically connected with the control module and the sensor module and used for collecting and storing the parameter data, the calculation processing result and the control instruction uploaded by the control module and the sensor module and visually displaying the data.
According to the method and the system for planning the air duct and adjusting the variable air volume of the precision air conditioner of the data center machine room, aiming at the condition that the rack load changes in the operation process of the data center machine room, the opening of the air valve of the sub-static pressure box corresponding to each cold channel is controlled based on the real-time total power of each cold channel, so that the air supply volume is controlled, the matching of the heat productivity of equipment and the cold load supply is realized, the occurrence of local hot spots is avoided, the operation energy consumption of the precision air conditioner can be greatly reduced, and the effects of saving energy and reducing emission of the data center are achieved.
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 air duct planning and variable air volume adjustment of a precision air conditioner in a data center machine room according to the invention;
FIG. 2 is a schematic view showing the arrangement of air ducts of the plenum box of the precision air conditioner of 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 cross-sectional view of a data center room equipment arrangement of the present invention;
FIG. 5 shows a schematic diagram of a data center room precision air conditioning system of the present invention;
FIG. 6 is a schematic diagram illustrating power collection of rack servers in each room of a data center according to the present invention;
FIG. 7 shows a PLC wiring schematic of the present invention;
fig. 8 is a flowchart illustrating a method for adjusting an air volume of a precision air conditioner according to the present invention;
FIG. 9 is a flow chart of the cooling capacity adjusting method of the cooling source system of the present invention;
fig. 10 shows a block diagram of a precision air-conditioning duct planning and variable air volume adjusting system of a data center machine room according to the present invention.
Reference numerals:
1-main static pressure box, 2-branch static pressure box air valve, 3-rack server, 4-channel partition plate, 5-branch static pressure box, 6-water valve, 7-heat exchanger, 8-fan, 9-ground air outlet, 10-cold channel pressure sensor, 11-cold channel temperature sensor, 12-data center machine room, 13-precision air conditioner, 14-static pressure box pressure sensor and 15-hot channel pressure sensor.
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 5, a first aspect of the present invention provides a method for air duct planning and air volume regulation of a data center machine room precision air conditioner, in which a plurality of precision air conditioners 13 discharge cold air to a main static pressure box 1, the main static pressure box 1 is branched to a plurality of sub static pressure boxes 5 through sub static pressure box air valves 2, and the plurality of sub static pressure boxes 5 release the cold air to each cold air channel in the data center machine room 12 and perform air volume regulation, the method for air volume regulation includes:
step 1: collecting real-time power Q of each rack server 3 through a column head cabinet of each machine room;
step 2: calculating the sum W of the real-time power of all the rack servers in the same cold channeliAccording to the real-time power sum WiAdjusting the opening D of the air valve of the corresponding sub-static pressure boxiTo the set value;
and 3, step 3: data P of pressure sensor 10 of each cold channel is collectediData P with hot channel pressure sensor 150Calculating the pressure difference delta P1 between the two;
and 4, step 4: if the pressure difference delta P1 is greater than the set pressure difference delta P1(set)Entering step 6, otherwise entering step 5;
and 5: increase the opening D of the air valve of the sub-static pressure boxiUntil the differential pressure Δ P1 is equal to the set differential pressure Δ P1(set)；
Step 6: data P of the hydrostatic tank pressure sensor 14 is collected0 ’According to said data P0 ’And said data PiCalculating the pressure difference delta P2 between the cold channel and the static pressure box;
and 7: if the pressure difference delta P2 is greater than the set pressure difference delta P2L(set)Less than a set pressure differential Δ P2H(set)Step 9 is entered, otherwise step 8 is entered;
and 8: adjusting the air quantity of the precision air conditioner until the differential pressure delta P2 is greater than the set differential pressure delta P2L(set)Less than Δ P2H(set)；
And step 9: data T of temperature sensor 11 of each cold channel is collectedi；
Step 10: if the passage is coldTemperature TiIf the temperature is equal to the set temperature T0, finishing the regulation, otherwise, entering the step 11;
step 11: adjusting the cooling capacity of the cold source system until the temperature T of the cold channeliEqual to the set temperature T0, and this regulation is ended.
According to an embodiment of the present invention, the step 2 specifically includes:
according to the real-time power sum W of all rack serversiCalculating the ratio of the opening degree of the air valve of the sub-static pressure box to the sum of the rated power to obtain the percentage n percent of the corresponding opening degree of the air valve of the sub-static pressure box;
and the programmable controller determines the opening degree of the corresponding sub-static pressure box air valve according to the percentage n%.
To further illustrate the adjustment method of the above step 1 to step 11, the following will be described in detail with reference to specific example 1.
As shown in fig. 6 to 7, embodiment 1 provides a method for planning air ducts and adjusting variable air volume of a precision air conditioner in a data center room, which includes the following steps:
s101, obtaining the real-time power of 4 rack servers respectively as 3000kW, 3500kW, 4000kW and 4500kW through the row head cabinet;
s102, calculating the total running power of the equipment in the same cold channel according to the real-time power of each rack server as follows: 15000kW, and simultaneously adjusting the opening degree of the corresponding sub-static pressure box air valve to a set value;
s103, acquiring data of the cold channel and hot channel pressure sensors 15, wherein the data are 1.5KPa and 1.1KPa, and calculating to obtain a pressure difference of 0.4 KPa;
s104, adding and dividing the opening of the static pressure large air valve until the pressure difference meets the set requirement, wherein the pressure difference is less than the set pressure difference value of 1 KPa;
s105, collecting data of a pressure sensor 14 of the static pressure box to be 3KPa, and calculating to obtain that the pressure difference between the cold channel and the static pressure box is 1.9KPa, so that the requirement of a set value of 1KPa is met;
s106, collecting data of the cold channel temperature sensor 11 to be 22.5 ℃;
s107, adjusting the cooling capacity of the cold source system until the temperature of the cold channel is changed to meet the set requirement and finishing the adjustment when the temperature of the cold channel does not meet the set requirement at 22 ℃.
To further explain the method for adjusting the opening degree of the sub-static pressure tank blast gate in step S102, the following description will be made in conjunction with embodiment 2.
Embodiment 2 provides a method for adjusting the opening of an air valve of a partial static pressure box, which comprises the following specific steps:
s201: the opening degree of an air valve of the sub-static pressure box between the main static pressure box and the sub-static pressure box is adjusted through the electric valve 6, so that the control of the air quantity of the sub-static pressure box is realized. The real-time power of the rack server matched with the sub-static pressure box is 1.5kW, the rated power of the rack server is 5kW, the power percentage is 30%, and the percentage of the target opening of the air valve of the sub-static pressure box is 30%.
It is to be understood that the present invention is implemented by a PLC in the implementation of collecting rack server power.
According to an embodiment of the present invention, step 8 specifically includes:
step 8-1: judging whether the pressure difference delta P2< (delta P2L (set) or the pressure difference delta P2> -delta P2H (set) is established or not, if the pressure difference delta P2< (delta P2L) (set), improving the frequency of the fan 8 of the precision air conditioner, and if the pressure difference delta P2> -delta P2H (set), reducing the frequency of the fan 8 of the precision air conditioner;
step 8-2: and (3) judging whether the differential pressure delta P2 is within a section delta P2L (set < delta P2< deltaP 2H (set), ending the air volume control of the precision air conditioner if the differential pressure delta P2 is within the section, and returning to the step 8-1 to continue the air volume adjustment if the differential pressure delta P2 is not within the section delta P2L (set < deltaP 2< deltaP 2H (set)).
To further illustrate step 8, the following description will be made in detail with reference to specific example 3.
As shown in fig. 8, embodiment 3 provides a method for adjusting an air volume of a precision air conditioner, which includes the following steps:
s301: the static pressure box pressure and the cold channel pressure are 0.1Kpa less than the lower limit of the set value 1Kpa, and the frequency of the fan 8 is increased.
S302: and judging that the differential pressure is 1.5Kpa within the interval of 1-2 Kpa, and finishing air conditioner air volume control.
According to an embodiment of the present invention, the step 11 specifically includes:
as shown in fig. 9, the step 11 specifically includes:
step 11-1-1: judging the temperature T of the cold pathiWhether the value is larger than a set value T0, if so, entering a step 11-1-2, and if not, entering a step 11-2-1;
step 11-1-2: opening the opening Ai of the water valve 6 of the cold source system, judging whether the temperature Ti of the cold channel is greater than a set value T0, if so, ending the adjusting process, and if so, entering the step 11-1-3;
step 11-1-3: judging whether the opening Ai of the water valve 6 is maximum, if not, returning to the step 11-1-2, and if so, entering the step 11-1-4;
step 11-1-4: improve water pump frequency W of cold source systemi ’Judging whether the cold channel temperature Ti is greater than a set value T0, if so, ending the adjusting process, and if so, entering the step 11-1-5;
step 11-1-5: judging water pump frequency Wi ’Whether the upper limit value W0 is reached or not, if the upper limit value W0 is not reached, the step is returned to the step 11-1-4, and if the upper limit value W0 is reached, the step 11-1-6 is carried out;
step 11-1-6: reducing the outlet water temperature T of the cold source system, judging whether the cold channel temperature Ti is greater than a set value T0, if the cold channel temperature Ti is less than a set value T0, finishing the adjusting process, and if the cold channel temperature Ti is greater than a set value T0, entering the step 11-1-7;
step 11-1-7: judging whether the outlet water temperature t of the cold source system is less than a lower limit value t0, if the outlet water temperature t is less than the lower limit value t0, finishing the regulation, and if the outlet water temperature t is more than the lower limit value t0, returning to the step 11-1-6;
step 11-2-1: reducing the opening Ai of the water valve 6, judging whether the cold channel temperature Ti is less than a set value T1, if so, ending the adjusting process, and if not, entering the step 11-2-2;
step 11-2-2: judging whether the opening degree of the valve reaches a lower threshold value, if not, returning to the step 11-2-1, and if so, entering the step 11-2-3;
step 11-2-3: reduce the frequency W of the water pumpi ’Judging whether the cold channel temperature Ti is less than a set value T1 or not, if so, ending the adjusting process, and if not, entering the step 11-2-4;
step 11-2-4: judging water pump frequency Wi ’Whether the lower limit value W1 is reached or not is judged, if not, the step 11-2-3 is returned, and if the upper limit value is reached, the step 11-2-5 is carried out;
step 11-2-5: increasing the water outlet temperature T of the water system, judging whether the cold channel temperature Ti is less than a set value T1, if so, ending the adjusting process, and if not, entering the step 11-2-6;
step 11-2-6: and (4) judging whether the outlet water temperature t reaches an upper limit value t1, finishing regulation when the outlet water temperature t reaches the upper limit value t1, and returning to the step 11-2-5 when the outlet water temperature t is smaller than the upper limit value t 1.
To further illustrate step 11, the following description will be made in conjunction with specific example 5.
Embodiment 4 provides a method for adjusting cooling capacity of a cooling source system, which comprises the following steps:
s401: opening the water valve 6, judging that the temperature of the cold channel is 23 ℃ higher than a set value 22 ℃, and entering a step S402;
s402: the opening degree of the water valve 6 is maximum, and the step S403 is executed;
s403: increasing the frequency of the water pump, wherein the temperature of the cold channel is 22.9 ℃ higher than a set value, and entering a step S404;
s404: when the water pump frequency 50Hz reaches the upper limit value 50Hz, the step S405 is executed;
s405: reducing the temperature of the outlet water of the water system, wherein the temperature of the cold channel is 22.1 ℃ higher than a set value of 22 ℃, and entering step S406;
s506: the outlet water temperature is 8.5 ℃ and does not reach the lower limit value of 7 ℃, and the step S405 is returned to continuously regulate and control the outlet water temperature of the water system.
As shown in fig. 5, the water valve 6 of the chilled water is adjusted to control the water amount of the chilled water, the contact area of the chilled water and the outside is increased at the heat exchanger 7, the chilled water exchanges heat with the outside, the exchanged hot air is taken away by the fan 8 and is uniformly discharged from the overground air outlets 9, and therefore the purpose of heat dissipation is achieved.
Fig. 10 shows a block diagram of a precision air-conditioning duct planning and variable air volume adjusting system of a data center machine room according to the present invention.
As shown in fig. 10, a second aspect of the present invention further provides a system for planning an air duct of a precision air conditioner in a data center room and adjusting a variable air volume, which is used to implement the method for planning an air duct of a precision air conditioner in a data center room and adjusting a variable air volume, and includes: the system comprises a main static pressure box, a plurality of precision air conditioners and a plurality of sub static pressure boxes, wherein the main static pressure box is connected with the sub static pressure boxes, a sub static pressure box air valve is arranged at the connection part, the precision air conditioners discharge cold air to the main static pressure box together, the main static pressure box is divided into the sub static pressure boxes through the sub static pressure box air valves, and the sub static pressure boxes release the cold air to each cold channel in a data center machine room; further comprising: the device comprises a control module, an adjusting module and a sensor module; the control module is respectively and electrically connected with the sensor module and the adjusting module;
the sensor module comprises a pressure sensor, a temperature sensor, a rack server power acquisition device and a fan frequency acquisition device, and is respectively used for acquiring each key parameter of a precise air conditioner of a data center machine room;
the control module is used for processing and calculating data of each key parameter acquired by the sensor 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;
the adjusting module is used for accurately adjusting the opening, the fan frequency and the chilled water flow according to a control instruction provided by the control module, and comprises a chilled water valve 6, a frequency converter and a sub-static pressure box air valve, wherein the chilled water valve 6 is used for controlling the chilled water flow, the frequency converter comprises a fan frequency converter and a chilled water pump frequency converter which are respectively used for controlling the fan frequency and the chilled water pump frequency so as to adjust the air supply amount and the chilled water flow, and the sub-static pressure box air valve is used for controlling the air quantity.
Furthermore, two adjacent partial static pressure boxes are mutually separated by a channel partition plate 4 so as to avoid air circulation between the two adjacent partial static pressure boxes. The sub-static pressure box channels are guaranteed not to interfere with each other when cold energy is supplied to different cold channels, and dynamic adjustment is carried out according to cold loads of different cold channels.
Furthermore, the air duct planning and variable air volume adjusting system of the precise air conditioner of the data center machine room also comprises a local server;
the local server is electrically connected with the control module and the sensor module and used for collecting and storing the parameter data, the calculation processing result and the control instruction uploaded by the control module and the sensor module and visually displaying the data.
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 planning an air duct of a precision air conditioner in a data center room and adjusting a variable air volume, and when the program of the method for planning an air duct of a precision air conditioner in a data center room and adjusting a variable air volume is executed by a processor, the steps of the method for planning an air duct of a precision air conditioner in a data center room and adjusting a variable air volume are implemented.
The invention provides a method and a system for planning air channels and adjusting variable air volume of a precision air conditioner of a data center machine room, aiming at the situation that the load of a rack changes in the operation process of the data center machine room, the opening of a branch static pressure box air valve corresponding to each cold channel is controlled based on the real-time total power of each cold channel, so that the air supply volume is controlled, the matching of the heat productivity of equipment and the cold load supply is realized, the occurrence of local hot spots is avoided, the operation energy consumption of the precision air conditioner 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 in 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 implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, 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 capable of storing 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 (7)

1. A method for planning air passages of precise air conditioners in a data center machine room and adjusting variable air volume is characterized in that a plurality of precise air conditioners discharge cold air to a main static pressure box together, the main static pressure box is divided into a plurality of sub static pressure boxes through a sub static pressure box air valve, the plurality of sub static pressure boxes release the cold air to each cold passage in the data center machine room and adjust the air volume, and the air volume adjusting method comprises the following steps:
step 1: collecting real-time power Q of each rack server through a column head cabinet of each machine room;
step 2: calculating the sum W of the real-time power of all the rack servers in the same cold channeliAccording to the real-time power sum WiAdjusting the opening D of the air valve of the corresponding sub-static pressure boxiReaching a set value;
and 3, step 3: collecting data P of pressure sensors of each cold channeliData P with hot channel pressure sensor0Calculating the pressure difference delta P1 between the two;
and 4, step 4: if the pressure difference delta P1 is greater than the set pressure difference delta P1(set)Entering step 6, otherwise entering step 5;
and 5: increase the opening D of the air valve of the sub-static pressure boxiUntil the differential pressure Δ P1 is equal to the set differential pressure Δ P1(set)；
Step 6: collecting data P of a hydrostatic tank pressure sensor0 ’According to said data P0 ’And said data PiCalculating the pressure difference delta P2 between the cold channel and the static pressure box;
and 7: if the pressure difference delta P2 is greater than the set pressure difference delta P2L(set)Less than a set pressure differential Δ P2H(set)Step 9 is entered, otherwise step 8 is entered;
and 8: adjusting the air quantity of the precision air conditioner until the differential pressure delta P2 is greater than the set differential pressure delta P2L(set)Less than Δ P2H(set)；
And step 9: data T of temperature sensors of all cold channels is collectedi；
Step 10: if the temperature T of the cold aisleiIf the temperature is equal to the set temperature T0, finishing the regulation, otherwise, entering the step 11;
step 11: adjusting the cooling capacity of the cold source system until the temperature T of the cold channeliEqual to the set temperature T0, and this regulation is ended.
2. The method for air duct planning and variable air volume adjusting of the precision air conditioner of the data center machine room according to claim 1, wherein the step 2 specifically comprises:
according to the real-time power sum W of all rack serversiThe percentage n% of the corresponding opening of the air valve of the sub-static pressure box is obtained by calculating the proportion between the percentage n% and the total rated power;
and the programmable controller determines the opening degree of the corresponding sub-static pressure box air valve according to the percentage n%.
3. The method for air duct planning and air volume change adjustment of the precision air conditioner of the data center machine room according to claim 1, wherein the step 8 specifically comprises:
step 8-1: judging pressure difference delta P2<ΔP2L(set)Or pressure difference Δ P2>ΔP2H(set)If the pressure difference is delta P2<ΔP2L(set)Increasing the fan frequency of the precision air conditioner if the pressure difference is delta P2>ΔP2H(set)Reducing the fan frequency of the precision air conditioner;
step 8-2: determining whether the differential pressure Δ P2 is within the interval Δ P2L(set)<ΔP2< P2H(set)If the air volume control is within the interval, the air volume control of the precision air conditioner is ended, and if the air volume control is not within the interval Δ P2L(set)<ΔP2< P2H(set)And returning to the step 8-1 to continue air volume regulation.
4. The method for air duct planning and variable air volume adjusting of the precision air conditioner of the data center machine room according to claim 1, wherein the step 11 specifically comprises:
step 11-1-1: judging the temperature T of the cold pathiWhether the value is greater than a set value T0 or not, if so, entering a step 11-1-2;
step 11-1-2: opening the opening Ai of a water valve of a cold source system, judging whether the temperature Ti of a cold channel is greater than a set value T0, if so, ending the adjusting process, and if so, entering the step 11-1-3;
step 11-1-3: judging whether the opening Ai of the water valve is maximum, if not, returning to the step 11-1-2, and if so, entering the step 11-1-4;
step 11-1-4: improve water pump frequency W of cold source systemi ’Judging whether the cold channel temperature Ti is greater than a set value T0, if so, ending the adjusting process, and if so, entering the step 11-1-5;
step 11-1-5: judging water pump frequency Wi ’Whether the upper limit value W0 is reached or not, if the upper limit value W0 is not reached, the step is returned to the step 11-1-4, and if the upper limit value W0 is reached, the step 11-1-6 is carried out;
step 11-1-6: reducing the outlet water temperature T of the cold source system, judging whether the cold channel temperature Ti is greater than a set value T0, if the cold channel temperature Ti is less than a set value T0, finishing the adjusting process, and if the cold channel temperature Ti is greater than a set value T0, entering the step 11-1-7;
step 11-1-7: and judging whether the outlet water temperature t of the cold source system is less than a lower limit value t0, if the outlet water temperature t is less than the lower limit value t0, finishing the regulation, and if the outlet water temperature t is greater than the lower limit value t0, returning to the step 11-1-6.
5. The method for air duct planning and air volume change adjustment of the precision air conditioner of the data center machine room according to claim 4, wherein the step 11 further comprises:
step 11-1-1: judging the temperature T of the cold pathiWhether the value is larger than a set value T0 or not, if the value is smaller than the set value T0, the step 11-2-1 is carried out;
step 11-2-1: reducing the opening Ai of the water valve, judging whether the temperature Ti of the cold channel is less than a set value T1, if so, ending the adjusting process, and if not, entering the step 11-2-2;
step 11-2-2: judging whether the opening degree of the valve reaches a lower threshold value, if not, returning to the step 11-2-1, and if so, entering the step 11-2-3;
step 11-2-3: reduce the frequency W of the water pumpi ’Judging whether the cold channel temperature Ti is less than a set value T1 or not, if so, ending the adjusting process, and if not, entering the step 11-2-4;
step 11-2-4: judging water pump frequency Wi ’Whether the lower limit value W1 is reached or not is judged, if not, the step 11-2-3 is returned, and if the upper limit value is reached, the step 11-2-5 is carried out;
step 11-2-5: increasing the water outlet temperature T of the water system, judging whether the cold channel temperature Ti is less than a set value T1, if so, ending the adjusting process, and if not, entering the step 11-2-6;
step 11-2-6: and (4) judging whether the outlet water temperature t reaches an upper limit value t1, finishing regulation when the outlet water temperature t reaches the upper limit value t1, and returning to the step 11-2-5 when the outlet water temperature t is smaller than the upper limit value t 1.
6. The method for air duct planning and air volume change control of a precision air conditioner in a data center room as claimed in any one of claims 1 to 5, wherein the set temperature T0 is 22 ℃, and the set pressure difference Δ P1(set)For 1KPa, set pressure differential Δ P2L(set)For 1KPa, set pressure differential Δ P2H(set)Is 2 KPa.
7. The method for air duct planning and air volume change adjustment of the precise air conditioner of the data center machine room as claimed in claim 5, wherein the upper limit value W0 is 50Hz, and the lower limit value t0 is 7 ℃; the lower limit value W1 is 20Hz, and the upper limit value t1 is 10 ℃.
CN202010492757.2A 2020-06-03 2020-06-03 Method and system for planning air duct of precise air conditioner of data center machine room and adjusting variable air volume Active CN111615309B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010492757.2A CN111615309B (en) 2020-06-03 2020-06-03 Method and system for planning air duct of precise air conditioner of data center machine room and adjusting variable air volume

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010492757.2A CN111615309B (en) 2020-06-03 2020-06-03 Method and system for planning air duct of precise air conditioner of data center machine room and adjusting variable air volume

Publications (2)

Publication Number Publication Date
CN111615309A CN111615309A (en) 2020-09-01
CN111615309B true CN111615309B (en) 2022-05-31

Family

ID=72200368

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010492757.2A Active CN111615309B (en) 2020-06-03 2020-06-03 Method and system for planning air duct of precise air conditioner of data center machine room and adjusting variable air volume

Country Status (1)

Country Link
CN (1) CN111615309B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114144016B (en) * 2020-09-03 2024-07-26 中国联合网络通信集团有限公司 Cabinet cooling system and control method thereof
CN112594817A (en) * 2020-12-24 2021-04-02 武汉工程大学 Cooling system and method for energy-saving data machine room
CN113950230B (en) * 2021-10-19 2024-04-30 中国联合网络通信集团有限公司 Computer room air conditioner control method, device, equipment and storage medium
CN113835460B (en) * 2021-11-23 2022-05-03 中铁建设集团有限公司 Data computer lab intelligence environmental control system based on hydrodynamics analog digital twin
CN114845523B (en) * 2022-04-11 2023-03-24 广东云下汇金科技有限公司 Refrigeration control method and device for data center precision air conditioner
CN115843170A (en) * 2022-12-16 2023-03-24 广东志享信息科技有限公司 Energy-saving control system for air conditioner in machine room
CN117062419B (en) * 2023-10-11 2023-12-19 北京科技大学 Multi-terminal supply-demand matched data center cold source system parameter optimization method and device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105864884A (en) * 2015-01-23 2016-08-17 上海宽带技术及应用工程研究中心 Data center air supply system
CN105020845B (en) * 2015-03-09 2018-03-06 厦门立思科技股份有限公司 A kind of air-conditioning system linkage energy-saving control system and method
CN104748326A (en) * 2015-03-17 2015-07-01 广东申菱空调设备有限公司 Chilled water precision air conditioner and energy-conservation control method thereof
US10342163B2 (en) * 2015-12-02 2019-07-02 Google Llc Cooling a data center

Also Published As

Publication number Publication date
CN111615309A (en) 2020-09-01

Similar Documents

Publication Publication Date Title
CN111615309B (en) Method and system for planning air duct of precise air conditioner of data center machine room and adjusting variable air volume
CN111867330B (en) Method and system for adjusting communication machine building machine room based on IT load change
CN111601491B (en) Variable air volume energy-saving target regulation and control method and system for precise air conditioner of data center machine room
CN102483256B (en) Air conditioning system for controlling server room, and air conditioning control method
CN111836523B (en) Three-level adjusting method and system for air conditioner of communication machine building
CN109475068B (en) Multi-cold-source modularized partition cooling energy-saving system of data center and control method
CN107255355B (en) Air conditioning system control device and method
CN109682019B (en) Method for online optimization of secondary side outlet water temperature of chilled water heat exchanger of central air conditioner
CN114857687B (en) Control system and method for water-cooled central air conditioner cooling water system
CN114396714A (en) System and method for automatically controlling and operating system starting number
CN113883689B (en) Air conditioning system
CN209749040U (en) Data center cooling system
CN103673208A (en) Temperature control method, device and system
CN117062419B (en) Multi-terminal supply-demand matched data center cold source system parameter optimization method and device
CN104964394A (en) Central air-conditioning energy efficiency control system based on linkage of wind and water and control method
CN117082833A (en) Temperature differential pressure energy-saving control method for data center air conditioner chilled water system
RU126357U1 (en) DATA PROCESSING CENTER
CN109698506B (en) Response management method for flexible load interruption in building
CN116390455A (en) Modularized data center machine room with cabinet in fish scale type arrangement and control method
CN115796066B (en) Energy-saving method of data center air conditioning system based on pre-refrigeration
CN217881677U (en) Energy storage battery and thermal management system thereof
CN113268796B (en) Automatic type selection algorithm for heating ventilation air conditioning system equipment
CN115581056A (en) Energy-saving prediction control method and system suitable for water cooling system of data center
CN116341401A (en) Data center machine room model for optimizing airflow organization and layout analysis method
CN114980666A (en) Control method and system for liquid cooling heat dissipation system of data center

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant