KR102302982B1 - Control method of cooling module system for data center - Google Patents

Abstract

The present invention relates to a method for controlling a modular cooling system for a data center, which can minimize energy consumption. The method of the present invention comprises the steps of: setting the temperature and humidity of supplied air; measuring the temperature and humidity of ventilation and the supplied air to provide the same for a control unit; controlling a unit air module; measuring a differential pressure; and controlling an opening degree of a cold water valve.

Description

Control method of modular cooling system for data center {Control method of cooling module system for data center}

The present invention relates to a control method of a modular air conditioning system for a data center, and more particularly, based on the differential pressure between the hot zone and the cool zone, and the supply air temperature, by controlling the amount of airflow and the temperature of the supply air to control the air conditioning operation of the server room It relates to a control method of a modular cooling system for a data center that can minimize the energy required for the operation and can easily control the temperature of supply air even during low-load operation.

In general, data centers lease computer equipment or network equipment to companies and individuals, or provide services such as maintenance and repair by attracting customer equipment. It is installed and includes a work space where workers can work.

On the other hand, since the device including the above-described server rack does not operate smoothly at high temperature, and heat is generated during operation, the data center requires a cooling device for cooling it.

Furthermore, in the case of electronic parts or circuits in the data center, if there is a lot of moisture, there is a risk of a short circuit, and if the moisture is too little, there is a high possibility that problems such as fire or damage to electronic parts due to generation of static electricity and sparks may occur.

Therefore, the data center is equipped with an air conditioner for cooling and constant temperature and humidity, and as an example of this technology, a computer room and a rack are disclosed in Korean Patent Publication Nos. 10-0478755, 10-1103394, and 10-2010-0013312. Techniques for various air conditioners to be installed in

However, since the conventional air conditioning system of the data center controls only the temperature information, it is possible to obtain an average value for the information necessary for control, but it is difficult to obtain accurate data of the entire server rack, so the accuracy of the control is lowered, and it is partially overheated. There are problems such as where there may be.

The present invention can minimize the energy required for the air conditioning operation of the server room by controlling the air flow rate and the supply air temperature based on the differential pressure between the hot zone and the cool zone and the supply air temperature, and control the temperature of the supply air even during low load operation An object of the present invention is to provide a method for controlling this easy modular cooling system for a data center.

The method for controlling a modular air conditioning system for a data center according to the present invention is provided at one side of a server room, introduces air (ventilation) in the room, cools the introduced air, converts the supplied air to supply air, and provides it back to the room, The unit air conditioning modules are stacked and arranged in horizontal rows to form a single cooling system, a hot zone where relatively hot air ventilation flows, and a cool zone where relatively cold air supply air flows. A differential pressure sensor provided on the boundary line, a supply air temperature and humidity sensor provided on a line through which the supply air flows and measuring the temperature and humidity of the air supplied to the server room, and a supply air temperature and humidity sensor provided on the line through which the ventilation flows, the unit A ventilation temperature and humidity sensor for measuring the temperature and humidity of ventilation flowing into the air module, and a control unit for controlling the unit air conditioning module based on the measurement values provided by the supply air temperature and humidity sensor and the ventilation temperature and humidity sensor; The steps of setting the temperature and humidity of the ventilation temperature and humidity sensor and the supply air temperature and humidity sensor, respectively, measuring the temperature and humidity of the ventilation and supply air and providing them to a control unit; , controlling the unit air module based on humidity, measuring the differential pressure between the hot zone and the cool zone of the server room, and the air supply amount of the unit air conditioning module based on the differential pressure and the supply air temperature between the hot zone and the cool zone of the server room and and controlling the opening degree of the cold water valve.

At this time, the unit air conditioning module according to the present invention has a module housing in which an intake port for introducing external air or indoor air is formed on the front side, and an air supply port for supplying air passing through the interior to the room is formed on the opposite rear side; , a blower provided on the intake port side of the inside of the module housing to blow the air introduced through the intake port to the rear, and provided behind the blower in the module housing, blown by the blower A cooling coil unit for cooling by passing the cooled air and converting it to supply air; It is provided on the air supply port side of the inside of the module housing, and includes an air supply damper for selectively opening and closing the air supply port.

And in the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module based on the differential pressure and the supply air temperature between the hot zone and the cool zone of the server room according to the present invention, the pressure between the hot zone and the cool zone When the difference is within the set value range, the blower fan of the blower is controlled to maintain the air volume of the blower, or when the pressure difference between the hot zone and the cool zone is higher than the set value, When the blower fan of the blower is controlled so that the output of the blower is lowered, or when the pressure difference between the hot zone and the cool zone is lower than a corresponding set value, the output of the blower is raised so that the output of the blower is raised Controls the blower fan.

In addition, in the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module based on the differential pressure and the supply air temperature between the hot zone and the cool zone of the server room according to the present invention, when the supply air temperature is within a set temperature range, Control to maintain a partial cold water valve opening rate, or when the supply air temperature is higher than the set temperature range, control to increase the cold water valve opening rate of the cooling coil unit, or when the supply air temperature is lower than the set temperature range, the Controlled so that the opening rate of the cold water valve in the cooling coil part is reduced.

The method for controlling a modular cooling system for a data center according to the present invention has the following effects.

First, based on the differential pressure between the hot zone and the cool zone and the supply air temperature, it is possible to minimize the energy required for the air conditioning operation of the server room by controlling the air supply volume and the supply air temperature, and the temperature control of the supply air during low-load operation is also possible. have an easy effect.

Second, by minimizing the volume of a plurality of unit air conditioning modules each equipped with a blower fan and cooling coil, site accessibility is improved, and a plurality of units brought into the installation site using the cargo elevator of the building and brought into the installation site Since the installation of the air conditioner is completed by arranging and connecting the air conditioning modules in stacking, horizontal and vertical lines corresponding to the cooling capacity, installation is easier than the conventional air conditioning system, reducing the impact on the construction period, and the hinged front As the frame and the blower selectively rotate, the front surface of the unit air conditioning module is opened, so the maintenance of the blowing fan, which is the driving chain of the unit air conditioning module, is convenient, and it is opened from the front of the device without the need to enter the inside of the device. Provides modular cooling systems for possible data centers.

1 is an exemplary view showing a modular cooling system for a data center according to an embodiment of the present invention.
2 is an exemplary view illustrating a state in which a modular air conditioning system for a data center according to an embodiment of the present invention is installed on one side of a server room.
3 is an exemplary view showing a unit air conditioning module of a modular air conditioning system for a data center according to an embodiment of the present invention.
4 is an exemplary view showing a state in which the front frame of the unit air conditioning module is opened according to an embodiment of the present invention.
5 is an exemplary view showing a state in which the filter unit is separated from the unit air conditioning module according to an embodiment of the present invention.
6 is an exemplary view illustrating a cooling system by arranging a plurality of unit air conditioning modules in a stacked horizontal row furnace according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so at the time of the present application, they are equivalent It should be understood that there may be variations.

The present invention can minimize the energy required for the air conditioning operation of the server room by controlling the air flow rate and the supply air temperature based on the differential pressure between the hot zone and the cool zone and the supply air temperature, and control the temperature of the supply air even during low load operation A method for controlling this easy modular air conditioning system for a data center is as follows with reference to the drawings.

First, the modular air conditioning system for a data center according to an embodiment of the present invention with reference to FIGS. 3 to 6 introduces external air or indoor air, cools the introduced air, converts it to supply air, and provides it back to the room. , including a plurality of unit air conditioning modules 100, the plurality of which are arranged in stacked or horizontal rows to constitute one air conditioning system, and are electrically connected to each of the unit air conditioning modules 100, and each of the unit air conditioning modules ( and a control unit 200 for controlling 100).

Therefore, the number of the unit air conditioning module 100 according to an embodiment of the present invention is determined according to the size of the data center, and the total or plurality of unit air conditioning modules ( 100) can be controlled to be driven.

Here, looking at the unit air conditioning module 100, the unit air conditioning module 100 includes a module housing 110, a blower unit 120, a cooling coil unit 130, a humidifier unit 140, and a supply air damper unit. (150).

First, the module housing 110 forms an intake port (a) for introducing ventilation, which is external air or indoor air, on the front side, and provides air converted to supply air through the inside on the opposite rear side to the room. Form a supply port (b).

Looking at the module housing 110 in more detail, the module housing 110 includes a frame 111 that forms sides of a hexahedron, and the frame 111 is a member with a hollow inside for thermal insulation, and the frame ( 111) can be formed.

And the upper panel 112 is coupled to the upper side of the frame 111, and the upper panel 112 is preferably made of a plate-like material with high thermal insulation properties, and is coupled to the upper side of the frame 111, The upper side of the frame 111 is sealed.

In addition, a support frame 113 is coupled to the lower side of the frame 111 , and the support frame 113 is on the same plate as the upper panel 112 , but the thickness thereof is a predetermined height between the frame 111 and the ground. The frame 111 and the frame 111 are formed to have a thick corresponding thickness to support the base material installed inside the frame 111 , and form a pedestal while sealing the lower side of the frame 111 .

In addition, left and right panels 114 and 115 are coupled to the left and right sides of the frame 111, respectively. The left and right sides of the frame 111 are coupled to each other to seal the left and right sides of the frame 111 , respectively.

A front frame 116 is coupled to the intake port (a) which is the front side of the frame 111, and the front frame 116 has one side hinged on the intake port (a) which is the front side of the frame 111 (h). coupled to, the front frame 116 rotates about the hinge (h) about the axis, and the front frame 116 opens and closes the intake port (a) on the front side of the frame (111).

At this time, a plurality of filter units 160 are mounted on the front frame 116, and the front frame 116 is divided into a plurality of mounting spaces, and a size corresponding to the area of the mounting space is provided in each of the divided mounting spaces. A filter unit 160 having a filter unit 160 is provided to filter foreign substances in the air introduced into the intake port (a), and a filter differential pressure sensor is provided around the filter unit 160, and the air before passing through the filter and the filter The filter replacement cycle can be known by the differential pressure of the air passing through it.

Therefore, as the front frame 116 opens the front surface of the unit air conditioning module 100 while selectively rotating about the hinge h as an axis, for the maintenance of the unit air conditioning module 100, the unit air conditioning module ( 100), the front frame 116 is opened from the front without the need to form a separate entrance, and maintenance work can be performed conveniently.

And the blower 120 is provided at the intake port (a) side of the inside of the module housing 110, and blows the air introduced through the intake port (a) to the rear.

At this time, the blower 120 is coupled and fixed in a vertical line inside the module housing 110 and includes a fixing bracket 121 having a rectangular hole in the center, and one side of the hole of the fixing bracket 121 . It is coupled to the hinge (h) and includes a mounting bracket (122) for selectively rotating the hinge (h) as an axis, and includes a blowing fan (123) mounted on the mounting bracket (122).

Therefore, the blower 120 selectively rotates about the hinge as an axis, like the front frame 116, while the front surface of the unit air conditioning module 100 is opened, and at the same time, the blower fan 123 moves to the module housing ( Since the inside of 110 is exposed to the front of the module housing 110 , maintenance and replacement of the blower fan 123 , which is the driving body of the unit air conditioning module 100 , is convenient.

In addition, a cooling coil unit 130 is provided behind the blowing unit 120 in the module housing 110 , and the cooling coil unit 130 receives the air blown by the blowing unit 120 . After cooling by passing through, it is switched to supply air.

At this time, the cooling coil unit 130 is a low static pressure cooling coil, and the air moving along the inside of the module housing 110 is cooled to a temperature corresponding to the preset supply air temperature by passing air through the cooling fins, By heat exchange between the refrigerant flowing along the cooling fins and air, the air passing through the cooling fins is cooled and converted to supply air, and it is preferable to use cold water as the refrigerant, and cold water among the cooling coils of the cooling coil unit 130 . A leak sensor may be provided in the pipe through which it flows, so as to detect a leak of cold water.

And a humidifying unit 140 is provided behind the cooling coil unit 130 among the inside of the module housing 110 , and the humidifying unit 140 selectively humidifies the supply air that has passed through the cooling coil unit 130 . do.

At this time, the humidifier 140 is a vaporization type humidifier, and is vaporized by the air flowing along the inside of the module housing 110 to perform humidification.

In addition, a supply air damper unit 150 is provided on the inner middle air supply port (b) side of the module housing 110, and the air supply damper unit 150 selectively opens and closes the air supply port (b).

The air supply damper unit 150 includes a storage plate 151 for discharging the discharged supply air at a uniform flow rate, the storage plate 151 being disposed on the opening side of the supply air damper unit 150. , by passing the supply air supplied to the room through the low-speed airflow grids formed on the entire surface, uniformly distributing the discharge air volume of the supply air and flowing out.

In addition, a supply air volume sensor is provided around the supply air damper unit 150 to measure the air volume of the air supplied to the server room through the supply air damper unit 150 , and transmit the measured value to the control unit 200 . do.

A control method of a modular cooling system for a data center according to an embodiment of the present invention with reference to FIGS. 1 and 6 is as follows.

First, the unit air conditioning modules 100 of the modular air conditioning system for a data center are electrically connected to each other while being stacked and arranged in horizontal rows at one side of the server room of the data center, and electrically connected to one control unit 200, the control unit ( 200) to cool the server room, which is the interior of the data center.

At this time, the control unit 200 is based on the differential pressure between the hot zone and the cool zone of the server room, the ventilation temperature, and the supply air temperature of the unit air conditioning module based on the blowing fan 123 and the cooling coil unit 130, And to control the air supply damper unit 150, the blowing fan 123 and the cooling coil unit 130 is controlled based on the supply air temperature, the blowing fan 123 and the air supply damper unit 150 is the server rack It is controlled based on the measured value of either the differential pressure or the ventilation temperature or the supply air temperature.

Here, a temperature/humidity sensor is provided in each of the inside or outside of the unit air conditioning module 100 and the server room of the data center. to detect the temperature and humidity of each ventilation flowing into the unit air conditioning module 100 , and transmit temperature and humidity information of the ventilation and supply air thereto to the control unit 200 .

In detail, the temperature/humidity sensor includes a ventilation temperature/humidity sensor 201 and a supply air temperature/humidity sensor 202 , wherein the ventilation temperature/humidity sensor 201 is an intake port of the unit air conditioning module 100 . (a) is provided on the side or a hot zone of the server room or a passage through which ventilation flows, and detects the temperature and humidity of ventilation flowing into the intake port (a) of the unit air conditioning module 100 .

And the supply air temperature/humidity sensor 202 is provided on the air supply port (b) side of the unit air conditioning module 100 or on the cool zone of the server room or the passage through which the supply air flows, the unit air conditioning module ( 100) detects the temperature and humidity of the supply air flowing out from the supply port (b).

In addition, a differential pressure sensor 203 is provided on a boundary line between a hot zone and a cool zone with the server racks installed in the server room as a boundary, and the differential pressure sensor 203 is a hot zone and Measure the differential pressure between cool zones.

Based on the differential pressure measured by the differential pressure sensor 203 or the supply air temperature, the blowing unit 120 and the cooling coil unit 130 are controlled for each operation mode.

The control method of a modular air conditioning system for a data center according to an embodiment of the present invention includes the steps of setting the temperature and humidity of supply air in the control unit 200, and the ventilation temperature and humidity sensor 201 and the supply air temperature and humidity sensor 202. The steps of measuring the temperature and humidity of ventilation and supply air, respectively, and providing them to the control unit 200, and the control unit 200 controlling the unit air module 100 based on the temperature and humidity of the ventilation provided and the temperature and humidity of the supply air Step, measuring the differential pressure between the hot zone and the cool zone of the server room, and controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module 100 based on the differential pressure and the supply air temperature between the hot zone and the cool zone of the server room controlled in sequence.

Here, in the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module 100 based on the differential pressure and the supply air temperature between the hot zone and the cool zone of the server room, the pressure difference between the hot zone and the cool zone When it is within the set value range, the control unit 200 controls the blowing fan 123 of the blower 120 so that the air volume of the blower 120 is maintained, so that the air volume of the supply air is continuously maintained. .

And in the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module 100 based on the differential pressure and the supply air temperature between the hot zone and the cool zone of the server room, the pressure difference between the hot zone and the cool zone If it is higher than the set value, the control unit 200 controls the blowing fan 123 of the blower 120 so that the output of the blower 120 is lowered, thereby controlling the amount of air supplied to be reduced.

In addition, in the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module 100 based on the differential pressure and the supply air temperature between the hot zone and the cool zone of the server room, the pressure between the hot zone and the cool zone When the difference is lower than the set value, the control unit 200 controls the blowing fan 123 of the blower 120 to increase the output of the blower 120 to control the amount of air supplied to increase.

Therefore, it is preferable that the air supply amount is controlled by following the differential pressure between the hot zone and the cool zone of the server room. Operation is made to maintain the indoor set temperature due to consumption, and interlocking with the supply air damper unit 150 may be automatically operated by manually setting the temperature through the control unit or specifying a specific period according to the needs of the manager.

In addition, in the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module 100 based on the differential pressure between the hot zone and the cool zone of the server room and the supply air temperature, when the supply air temperature is within a set temperature range, the cooling coil unit ( 130) of the cold water valve (not shown) is controlled so that the opening degree is maintained.

And in the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module 100 based on the pressure differential between the hot zone and the cool zone of the server room, the ventilation temperature, and the supply air temperature, when the supply air temperature is higher than the set temperature range, the Controlled so that the opening rate of the cold water valve of the cooling coil part is increased.

In addition, in the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module 100 based on the differential pressure between the hot zone and the cool zone of the server room, the ventilation temperature, and the supply air temperature, when the supply air temperature is lower than the set temperature range, Controlled so that the opening rate of the cold water valve of the cooling coil part is reduced.

Therefore, in the cooling coil unit 130 made of a low static pressure cooling coil, the cooling water valve that opens and closes the flow of cold water in response to the control signal of the control unit 200 based on the supply air temperature is proportionally controlled, and humidification is also controlled by ventilation and supply air condition. Humidification is controlled according to the indoor dew point temperature according to the dry bulb temperature, furnace top temperature, relative humidity, and absolute humidity values.

In addition, in the method for controlling a modular air conditioning system for a data center according to an embodiment of the present invention, when an abnormality occurs in any one of the unit air conditioning modules 100, a safe logic operation (control) is performed, for example, the unit air conditioning unit 100 When a critical alarm occurs in any one unit air conditioning module 100 through state monitoring between the modules 100, the unit air conditioning module 100 around the unit air conditioning module 100 in which the critical occurs is provided with air supply amount and cooling valve. drive to the maximum value.

Here, the air supply damper 150 of the unit air conditioning module 100 is opened to 30% or less, the blowing fan 123 of the unit air conditioning module 100 is stopped, and the cold water valve is closed, so that the damper is closed. Damage to the unit air conditioning module 100 due to the operation of the blowing fan 123 is prevented.

And when a short circuit or an out-of-range value of each sensor is detected, an alternative logic is operated with an alarm. When the supply air temperature/humidity sensor alarms, the operation is based on the cool zone temperature, and when the supply air volume sensor alarms, the remaining normal sensor values are operated. It operates based on the standard, and when the cool zone temperature/humidity sensor alarms, it operates based on the remaining normal sensor values.

In addition, an alarm is generated when a water leak occurs by a water leak sensor provided in the cooling coil unit and the humidifying unit, but the unit air conditioning module 100 is controlled to operate normally, and the filter replacement time can be known through the filter differential pressure sensor.

Although the present invention has been described with reference to the embodiment shown in the drawings, which is only exemplary, those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

a: intake port b: intake port
h: hinge 100: unit air conditioning module
110: module housing 111: frame
112: upper panel 113: support frame
114: left panel 115: right panel
116: front frame 120: blower
121: fixing bracket 122: mounting bracket
123: blow fan 130: cooling coil part
140: humidification unit 150: air supply damper unit
151: storage plate 160: filter unit
200: control unit 201: ventilation temperature sensor
202: supply air temperature sensor 203: differential pressure sensor

Claims (8)

It is provided on one side of the server room, introduces air (ventilation) in the room through the intake port formed in the front, converts the introduced air to supply air while cooling, and provides it back to the room through the air supply port formed in the rear, and is coupled to the intake port The filter unit provided on the front frame is equipped with a filter differential pressure sensor that measures the differential pressure between the air before and after passing through the filter unit and informs the replacement cycle of the filter, and the cooling capacity required in the room of the data center. A plurality of unit air conditioning modules that are stacked and arranged in horizontal rows according to A differential pressure sensor provided on the boundary line of the cool zone to measure the differential pressure between the hot zone and the cool zone, and provided on the air supply port side of the unit air conditioning module, A supply air temperature and humidity sensor for measuring the temperature and humidity of the supply air flowing out of the appliance, and a ventilation temperature and humidity sensor provided on the ventilation port side of the unit air conditioning module to measure the temperature and humidity of the ventilation flowing into the intake port of the unit air conditioning module, and A control unit for controlling only some of the plurality of unit air conditioning modules or controlling all of the plurality of unit air conditioning modules based on the measurement values provided by the supply air temperature and humidity sensor and the ventilation temperature and humidity sensor,
setting the temperature and humidity of the supply air to the control unit;
Measuring the temperature and humidity of ventilation and supply air, respectively, with the ventilation temperature and humidity sensor and the supply air temperature and humidity sensor, and providing them to the control unit;
controlling the unit air module based on the temperature and humidity of the ventilation provided by the controller and the temperature and humidity of the supply air;
measuring a differential pressure between a hot zone and a cool zone of the server room; and
and controlling an air supply amount of the unit air conditioning module and an opening degree of a cold water valve based on the differential pressure and supply air temperature between the hot zone and the cool zone of the server room.
The method according to claim 1,
The unit air conditioning module is
a module housing in which an intake port for introducing external air or indoor air is formed on the front side, and an air supply port for supplying air passing through the interior to the room on the opposite rear side is formed;
a blower provided on the intake port side of the module housing to blow the air introduced through the intake port to the rear;
a cooling coil part provided behind the blower part in the module housing to pass the air blown by the blower part to cool it and then convert it to supply air;
a humidifier provided behind the cooling coil part in the module housing to selectively humidify the supply air passing through the cooling coil part;
A control method of a modular cooling system for a data center comprising a; an air supply damper provided on the air supply port side of the module housing to selectively open and close the air supply port.
3. The method according to claim 2,
In the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module based on the differential pressure and supply air temperature between the hot zone and the cool zone of the server room,
When the pressure difference between the hot zone and the cool zone is within a corresponding set value range, the control of the modular cooling system for a data center that controls the blowing fan of the blower so that the air volume of the blower is maintained Way.
3. The method according to claim 2,
In the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module based on the differential pressure and supply air temperature between the hot zone and the cool zone of the server room,
When the pressure difference between the hot zone and the cool zone is higher than a corresponding set value, the control method of the modular cooling system for a data center for controlling the blowing fan of the blower so that the output of the blower goes down.
3. The method according to claim 2,
In the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module based on the differential pressure and supply air temperature between the hot zone and the cool zone of the server room,
When the pressure difference between the hot zone and the cool zone is lower than a corresponding set value, the control method of a data center modular air conditioning system for controlling the blowing fan of the blower to increase the output of the blower.
3. The method according to claim 2,
In the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module based on the differential pressure and supply air temperature between the hot zone and the cool zone of the server room,
When the supply air temperature is within a set temperature range, a control method of a modular cooling system for a data center for controlling so that an opening rate of the cooling water valve of the cooling coil unit is maintained.
3. The method according to claim 2,
In the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module based on the pressure differential between the hot zone and the cool zone of the server room, the ventilation temperature, and the supply air temperature,
When the supply air temperature is higher than a set temperature range, a control method of a modular cooling system for a data center for controlling an opening rate of a cooling water valve of the cooling coil unit to increase.
3. The method according to claim 2,
In the step of controlling the air supply amount and the cold water valve opening degree of the unit air conditioning module based on the pressure differential between the hot zone and the cool zone of the server room, the ventilation temperature, and the supply air temperature,
When the supply air temperature is lower than a set temperature range, a control method of a modular cooling system for a data center for controlling so that an opening rate of the cooling water valve of the cooling coil unit is reduced.

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