KR20220143366A - Oac managing server, oac system and operating method thereof - Google Patents

Abstract

An embodiment of the present invention is to provide an outdoor air conditioner management server, an outdoor air conditioner system, and an operation method thereof with improved performance in controlling the temperature and humidity of outdoor air provided to a clean room. According to an embodiment of the present invention, an outdoor air conditioner system may comprise: an outdoor air conditioner management server which stores and provides outdoor air-related information and operating condition parameters and controls operation of an outdoor air conditioner based on operation control information transmitted from a calculation processing server; and the calculation processing server which acquires operation control information by applying operating point derivation logic modeled on the basis of past history data of the outdoor air conditioner and reflecting the operating condition parameters.

Description

Ojogi management server, Ojogi system, and operating method thereof

The present invention relates to an external device management server, an external device system, and an operating method thereof.

If the set values are set leisurely to control the temperature and humidity of the outside air supplied to a clean room, energy may be used excessively.

In addition, when the operator directly changes the set value to meet the supply specification according to the temperature and humidity conditions of the outside air, an error such as an operator's operation error may occur, which may cause a setback in the production and supply of the product or lead to an accident.

Accordingly, the operator has been looking for a way to efficiently control the temperature and humidity of the outside air supplied to the clean room.

An embodiment of the present invention is to provide an outdoor air unit management server, an outdoor unit system, and an operating method thereof with improved temperature and humidity control performance of outdoor air provided to a clean room.

An external device system according to an embodiment of the present invention includes: an external device management server for storing and providing external air related information and operating condition parameters, and controlling the driving of the external device based on the operation control information transmitted from the calculation processing server; and an arithmetic processing server configured to obtain the operation control information by applying the outdoor air related information to an operating point derivation logic modeled based on the past history data of the outdoor air unit and then reflecting the operating condition parameter.

The operating method of the outdoor air unit system according to an embodiment of the present invention includes the current outdoor air temperature, the current absolute humidity, the current precooling coil valve rear end temperature, the current preheating coil valve rear end temperature, and the current cooling and dehumidifying valve rear end temperature measured in the outdoor air unit. collecting outdoor air-related information including at least one of the opening degrees; receiving an operating condition parameter; and applying the outdoor air-related information to an operating point derivation logic modeled based on the past history data of the outdoor unit, and then reflecting the operating condition parameter, a pre-heating coil set point of the outdoor unit, and The method may include acquiring operation control information including a pre-cooling coil set point.

A foreign bird management server according to an embodiment of the present invention, but stores information related to the foreign bird management server, including outdoor air related information and operating condition parameters, a database for storing some of the stored information in a table format; a user interface for receiving data input by a user, storing the data in the database, and outputting information related to control of an external device through a display; an arithmetic processing unit configured to obtain the operation control information by applying the outdoor air-related information to an operating point deriving logic modeled based on the past history data of the outdoor air unit, and then reflecting the operating condition parameter; and a controller configured to collect the outdoor air-related information by monitoring the operation of the outdoor air unit, and to control the operation of the outdoor air unit, including a preheating coil valve and a precooling coil valve of the outdoor unit, based on the operation control information. have.

According to the present embodiments, it is possible to derive an optimal operating point for efficient control of the temperature and humidity of the outdoor air supplied to the clean room, and the effect of automatically operating the outdoor air unit based on the derived optimal operating point can be expected.

In addition, since the present embodiment automatically drives the external device based on the optimum operating point, it is possible to prevent an operator error in operation, save energy, and reduce manpower when changing a set value required for driving the external device.

1 is a diagram showing the configuration of an external device system according to an embodiment of the present invention.
2 is a view showing a detailed configuration of an external device according to an embodiment of the present invention.
3 is an exemplary view showing an example of display of the operating state of the external device system according to an embodiment of the present invention.
4 is an exemplary diagram for explaining a method of calculating an operating point derivation logic according to an embodiment of the present invention.
5 is an exemplary diagram for explaining a method for acquiring operation control information according to an embodiment of the present invention.
6 to 8 are exemplary views illustrating an optimal operating point for each season according to an embodiment of the present invention.
9 is a view showing the configuration of an external device system according to another embodiment of the present invention.
10 is a flowchart for explaining a method of operating an external device system according to an embodiment of the present invention.
11 to 13 are flowcharts for describing a part of FIG. 10 in detail.

Hereinafter, a preferred embodiment of the present invention will be described based on the accompanying drawings.

1 is a diagram showing the configuration of an external device system according to an embodiment of the present invention, and FIG. 2 is a diagram showing a detailed configuration of the external device according to an embodiment of the present invention.

Referring to FIG. 1 , the outdoor air conditioner system 20 may include an outside air conditioner 100 , an outdoor air conditioner management server 200 , and an operation processing server 300 .

The clean room 10 is managed so that particles floating in the air in a room such as a work space are below a prescribed value, and even if raw materials and chemicals including gas are supplied to the room for product production, the It may mean a space in which cleanliness is maintained. In this case, the clean room 10 may be managed for environmental conditions including temperature, humidity, pressure, airflow, noise and vibration.

In order to maintain the clean state of the above-described clean room 10 , the outdoor air unit 100 may be introduced to manage the heating/cooling load by introducing outdoor air, which is outdoor air.

Referring to FIG. 2 , the external air conditioner 100 includes a pre-heating coil 101 , a pre-cooling coil 102 , and a cooling coil based on an inlet through which external air is introduced. 103, a water showering system (WSS) 104, a heating coil 105, a humidifier 106, and a blower fan 107, including the components arranged in order, the outside air flowing in through the inlet outlet can be made to advance into In this case, the outer tank 100 may be located outside the clean room 10 . Although not shown, it will be understood that the external heater 100 may additionally include the preheating coil 101 and various valves for controlling the operation of each of the above-described components.

Referring to FIG. 1 , the external device management server 200 may be connected to the external device 100 to control the operation of the external device 100 .

The operation state of the outdoor unit is largely divided into winter and summer, and is operated differently. It can be discharged after humidification so that it becomes the same absolute humidity as the absolute humidity set inside the room 10 . In summer, high temperature and high humidity outside air is passed through several stages of cooling coil to dehumidify it to the same absolute humidity as the internal set absolute humidity of the clean room 10. ) to be heated and then discharged into the clean room 10 so that the internal humidity value of the clean room can be adjusted.

The external device management server 200 may be configured to store and provide external air related information and operating condition parameters, and to control the driving of the external device 100 based on the operation control information transmitted from the calculation processing server 300 . .

Referring to FIG. 1 , the external device management server 200 may include a database 210 , a user interface 230 , and a controller 250 .

The database 210 stores information related to the outdoor air unit system 20, including outdoor air related information and operating condition parameters, and some of the stored information may be stored in a table format.

The outdoor air-related information includes at least one of the current outdoor air temperature, the current absolute humidity, the current pre-cooling coil valve rear end temperature, the current pre-heating coil valve rear end temperature, and the current cooling/dehumidifying valve rear end temperature and opening degree measured in the outdoor air unit 100. can do.

In addition, the operating condition parameters are the normal mode target temperature (set point) application period, target temperature change range limit, target temperature minimum and maximum limit, target temperature increase/decrease range, rapid change mode application period, sudden change mode condition and control valve (control valve) : CV) may include manual changes. In this case, the control valve may mean a preheating coil valve and a precooling coil valve, but is not limited thereto, and further includes a valve required to maintain the preheating coil temperature and the precooling coil temperature at the preheating coil target temperature and the precooling coil target temperature. It will also be possible to do.

The operating condition parameter is arbitrarily determined so that when the operation of the external device 100 is controlled based on the driving control information derived by calculating the operation point derivation logic, the operating state of the external device 100 can be controlled so that the operating state does not change suddenly and is stable. It may be losing information. These operating condition parameters may be reflected before determining final operation control information to be described later. A detailed description thereof will be given later.

The database 210 may store current operation state information transmitted from the arithmetic processing server 300 . At this time, the current operation state information is information indicating whether the operation state of the arithmetic processing server 300 is normal or abnormal, and may be in the form of information set in advance (eg, a flag, a symbol, an English abbreviation, etc.) have.

For example, it may be 1 when the operation state of the operation processing server is normal, and 0 when the operation state of the operation processing server is abnormal.

As will be described later, the arithmetic processing server 300 must estimate the driving point derivation logic for deriving the optimal operating point of the external device 100 through machine learning based on past history data, There is a need to recognize whether the arithmetic processing server 300 is operating normally on the external device system 20 side.

To this end, the arithmetic processing server 300 may periodically or non-periodically transmit its operating state to the external device management server 200 .

3 is an exemplary view showing an example of display of the operating state of the external device system according to an embodiment of the present invention.

The user interface 230 may receive data input by the user, store it in the database 210 , and output information related to the control of the external device 100 through a display (not shown).

In addition, the user interface 230 may output information on the current operation state of the calculation processing server 300 so that the user can check whether the calculation processing server 300 is operating normally.

Referring to FIG. 3 , the user interface 230 includes a communication state (1)) of the operation processing server, a communication state (2)) of the management server of the ostrich, a period (3) of storing the current value in the database (3)), of current operation state(4)), operation mode (summer, winter, change of season)(5)), current SP(set point)(6)), present PV(present value)(7)), current CV output(control) valve output)(8)), AI algorithm status (9)), whether AI mode is used (10)), AISP application period (11)), |AISP-SP| Maximum change width(12)), SP change maximum value(13)), SP change width minimum value(14)), AISP increase/decrease width(15)), AI sudden change mode alarm(16)), CV(control valve) change direction (17)), valve manual change value (18)), sudden change mode occurrence condition (19)), AI sudden change mode data acceptance period (20)), waiting time before auto change after CV manual change (21)) and The maximum CV manual change value (when the CV manual change value is received through the integrated DB) 22) can be output through a display (not shown).

The user may check the overall operating state of the external device system 20 through the information output through the user interface 230 described above, or may input information such as operating condition parameters.

The controller 250 collects outdoor air related information by monitoring the operation of the outer heat generator 100 , and the operation of the outer tank 100 including the preheating coil valve and the precooling coil valve of the outer tank 100 based on the operation control information. can be controlled.

The operation control information may include a pre-heating coil set point and a pre-cooling coil set point. In this case, the controller 250 may control the preheating coil valve based on the preheating coil target temperature, and may control the precooling coil valve based on the precooling coil target temperature.

The controller 250 controls the external heater 100 including the preheating coil valve and the precooling coil valve to maintain the preheating coil target temperature and the precooling coil target temperature.

For example, since pre-cooling lowers the temperature, if the current value is higher than the pre-cooling coil target temperature, the pre-cooling coil valve is opened, and pre-heating is to increase the temperature. will be.

4 is an exemplary diagram for explaining a method of calculating a driving point derivation logic according to an embodiment of the present invention, and FIG. 5 is an exemplary diagram for explaining a method for obtaining operation control information according to an embodiment of the present invention to be.

The calculation processing server 300 may acquire driving control information by applying the outdoor air related information to the driving point derivation logic modeled based on the past history data of the external air unit 100 and then reflecting the operating condition parameters.

Referring to FIG. 4 , the past history data of the outdoor air unit are external air absolute humidity (W0), outdoor temperature (T0), cooling and dehumidifying valve opening (V3), precooling coil valve rear end temperature (T2), and WSS (water showering system) rear end It may include a dew point temperature (DP3).

As shown in FIG. 5 , the calculation processing server 300 determines the relationship between the past history data of the outdoor unit 100 including the absolute humidity of the outdoor air, the outdoor temperature, the cooling/dehumidifying valve opening degree, the pre-cooling coil valve rear end temperature, and the WSS rear end dew point temperature. The operating point derivation logic can be derived by performing polynomial regression analysis based on the linear model.

Specifically, the operating point derivation logic is outside air temperature coefficient, current outside air temperature, outside air absolute humidity coefficient, current outside air absolute humidity, cooling and dehumidifying valve opening coefficient, current cooling and dehumidifying valve opening, precooling coil valve rear end temperature coefficient, precooling coil valve rear end temperature And it may be that the result of polynomial regression analysis based on the value of the y-intercept may be the dew point temperature after the water showering system (WSS).

At this time, the above-mentioned coefficients are based on past history data, the current outside temperature (T0), the current absolute humidity (W0), the current cooling/dehumidifying valve opening (V3), and the precooling coil valve rear end temperature (T2) and the WSS rear end. It may be a coefficient of a regression equation obtained by obtaining the relationship between the dew point temperature (DP3). When polynomial regression analysis is performed with historical data for a certain period in the past, including absolute humidity of outside air, outside air temperature, cooling/dehumidifying valve opening, precooling coil valve rear end temperature, and WSS rear end dew point temperature, a relational expression can be derived. , the corresponding constant is the coefficient of the relational expression.

In this embodiment, the arithmetic processing server 300 may collect past history data from the external devices 100 to which the WSS is applied when collecting the past history data. In this case, the subject that collects the past history data is not limited to the calculation processing server 300 , and may be other components including the controller 250 .

The calculation processing server 300 applies the current outside air temperature, the current absolute humidity of the outside air, and the current cooling and dehumidifying valve opening degree to the operating point derivation logic, but the cooling and dehumidifying valve opening degree (V3) is the lowest (low limit) and the WSS rear end dew point temperature (D3) ) at the target value of the precooling coil valve rear end temperature (T2) can be calculated.

The calculation processing server 300 calculates a pre-heating coil set point SP1 and a pre-cooling coil set point SP2 based on the calculated pre-cooling coil valve rear end temperature. can do.

In FIG. 5 , ⓐ is a graph including the target DP3 (dew point temperature at the rear end of WSS), and ⓑ may mean a graph including the currently measured DP3 (dew point temperature at the end of WSS).

When the temperature T2 at the rear end of the precooling coil valve is determined due to the characteristics of the outer tank 100 having the WSS, the dew point temperature DP3 at the rear end of the WSS may be determined. In this case, the cooling/dehumidifying valve opening degree V3 may be the lowest value (low limit), because the temperature T2 at the rear end of the precooling coil valve maintaining the lowest value of the cooling/dehumidifying valve opening degree is efficient in terms of energy.

For example, if T2 is 30°C and DP3 is 10°C, the cooling/dehumidifying valve must work as much as 20°C to match DP3. If, as the low limit of the cooling and dehumidifying valve, the amount of work that can be done is 5°C, and T2 that can maintain it is set to 15°C, 15 - 5 = 10, DP3 of 10°C can be adjusted. . That is, the amount of work of the cooling and dehumidifying valve is maintained at the lowest level, and the T2 value that can match DP3 is calculated.

The calculation processing server 300 calculates the pre-cooling coil valve rear end temperature coefficient based on the delta value between the actually measured current WSS rear end dew point temperature and the target WSS rear end dew point temperature derived through the operation point derivation logic, and the calculated pre-cooling The coil valve downstream temperature coefficient can be updated in the operating point derivation logic.

The driving point derivation logic may be a process of finding a target while continuously updating the slope when a polynomial regression equation is replaced with a simple linear equation.

Referring to FIG. 5, when the operating point derivation logic is replaced with a linear equation, when DP3 (dew point temperature after WSS) is the same as the result of adding b to the product of slope g and T2, increase the slope g or It is the process of adjusting DP3 to target DP3 while decreasing it (ⓑ -> ⓐ). That is, whenever the slope is updated, a new T2 that is the x-axis is derived, and the target preheating coil temperature SP1 and the precooling coil target temperature SP2 are calculated based on this. In this case, the arithmetic processing server 300 may apply a weighted moving average when changing g, which is the slope, every period, and may prevent a sudden change in the slope by dot product of the difference between the target value and the current value. For example, the target DP3 from DP3 is sequentially derived as follows from ⓑ -> ⓒ -> ⓐ according to the updated T2 coefficient by preventing the rapid change of the T2 coefficient, which is the x-axis. In this case, the weighted moving average may mean giving the greatest weight to the most recent data.

In the above-described replacement process, the calculation processing server 300 calculates the sum of the values of the current outdoor temperature (T0), the current absolute humidity (W0), the current cooling and dehumidification valve opening (V3), and the y-intercept in the operation point derivation logic. b, and the product of the temperature coefficient at the rear end of the precooling coil valve and the temperature T2 at the rear end of the precooling coil valve may be replaced by the product of the slope g and the temperature at the rear end of the precooling coil valve T2.

The target WSS rear end dew point temperature DP3 calculated through the operation point derivation logic may mean ⓐ of FIG. 5 , and the actually measured current WSS rear end dew point temperature DP3 may mean ⓑ of FIG. 5 .

)에서 운전점 도출 로직을 통해서는 산출된 타겟 WSS 후단 노점온도(

)를 빼면 DP3의 델타(delta)값이 산출될 수 있다. 이때, 실제 측정된 현재 WSS 후단 노점온도를 산출하는 로직과 운전점 도출 로직을 통해서는 산출된 타겟 WSS 후단 노점온도의 차를 산출하기 위한 로직을 통해 새로운 T2 계수(coefficient)가 도출될 수 있는 것이다. 이 값을 다음 운전점 도출 로직에 업데이트할 수 있는 것이다. 이렇게 새로운 T2 계수가 업데이트된 운전점 도출 로직은 도 5의 ⓒ를 의미할 수 있다.The actual measured current WSS downstream dew point temperature (

), the dew point temperature at the rear end of the target WSS calculated through the

), the delta value of DP3 can be calculated. At this time, a new T2 coefficient can be derived through the logic for calculating the difference between the calculated target WSS rear end dew point temperature and the logic for calculating the actually measured current WSS rear end dew point temperature and the operating point derivation logic. . This value can be updated to the next operating point derivation logic. In this way, the operation point derivation logic in which the new T2 coefficient is updated may refer to ⓒ in FIG. 5 .

In the above-described updating process of the T2 coefficient, a weighted moving average of the T2 coefficient of the existing driving point derivation logic and the newly calculated T2 coefficient may be updated in the driving point derivation logic using a weighted moving average.

Thereafter, the calculation processing server 300 may derive the preheating coil target temperature SP1 and the precooling coil target temperature SP2 based on the operating point derivation logic reflecting the newly updated T2 coefficient.

The arithmetic processing server 300 may repeatedly perform the above-described operation control information at preset intervals.

를 추정할 수 있다.On the other hand, the calculation processing server 300 uses the updated T2 coefficient to input the new input of FIG.

can be estimated.

6 to 8 are exemplary views illustrating an optimal operating point for each season according to an embodiment of the present invention.

The calculation processing server 300 may correct the calculated preheating coil target temperature and precooling coil target temperature according to season-specific correction conditions. At this time, the arithmetic processing server 300 performs season-specific correction immediately after deriving the preheating coil target temperature SP1 and the precooling coil target temperature SP2 based on the operating point deriving logic, or operating in the database 210 . Seasonal correction can be performed before transmitting control information.

6 shows the optimal operating point for the first changing season (CASE 1 for changing seasons), FIG. 7 shows the optimal operating point for the second changing season (CASE 2 for changing seasons), and FIG. 8 shows the optimum operating point for the summer.

The calculation processing server 300 may include at least one of a changing season correction condition, a winter season correction condition, and a summer season correction condition so that the outdoor unit 100 can operate at the optimal operating point for each season, as shown in FIGS. 6 to 8 . have.

0.1의 기준에 맞게 예열 코일 목표온도 및 예냉 코일 목표온도를 조정할 수 있다. 이때, 제1 환절기 보정조건은 도 6의 제1 환절기 최적 운전점을 고려한 보정조건을 의미할 수 있다.First, the first changing season correction condition may be that the temperature (T2) of the rear end of the precooling coil valve cannot be changed by more than 0.1 degree. The arithmetic processing server 300 may reflect only the direction of whether to increase or decrease the target temperature so that the target temperature SP suggested by the operation point derivation logic does not differ by 0.1 degree or more from the current T2. That is, the arithmetic processing server 300 SP = T2

It is possible to adjust the preheating coil target temperature and the precooling coil target temperature according to the standard of 0.1. In this case, the first changing season correction condition may refer to a correction condition in consideration of the first changing season optimum operating point of FIG. 6 .

Second, the calculation processing server 300 reflects the direction of whether to increase or decrease the target temperature based on the optimum target temperature (SP) calculated by the operating point derivation logic according to the second changing season correction condition and pre-cooling at the same time It can be corrected so that the enthalpy of supercooling and dehumidification becomes 1:1.9. In this case, the second changing season correction condition may refer to a correction condition in consideration of the second changing season optimum operating point of FIG. 7 .

That is, the calculation processing server 300 may calculate SP = T2 - 0.1 when V3 (cooling and dehumidifying valve opening) > the low limit in order to prevent a situation in which the cooling and dehumidifying valve opening degree is continuously opened.

Third, the calculation processing server 300 may correct the target temperature SP so that the enthalpy of pre-cooling and cooling/dehumidifying becomes 1:1.9 according to the summer correction conditions, regardless of the operation point derivation logic. In this case, the summer correction condition may refer to a correction condition in consideration of the summer optimum operating point of FIG. 8 .

The calculation processing server 300 checks whether the absolute value of the difference between the preheating coil target temperature and the precooling coil target temperature and each current value satisfies the sudden change mode condition, and according to the check result, the operation control information is converted into the normal mode. It can be output as , or output in rapid change mode.

9 is a diagram showing the configuration of a foreign joggi management server according to an embodiment of the present invention, and the case in which the calculation processing server of FIG. 1 is implemented inside the foreign joggi management server will be described as an example.

Referring to FIG. 9 , the outdoor air conditioner system 20 may include an outside air conditioner 100 and an outdoor air conditioner management server 200 .

The clean room 10 is a space in which particles floating in the air of a room, such as a work space, are managed below a prescribed value, and the cleanliness prescribed in the supply utility is maintained even for materials, chemicals, and gases supplied to the room. can mean In addition, in the clean room 10, environmental conditions including temperature, humidity, pressure, airflow, noise, and vibration can also be managed.

In order to maintain the clean state of the above-described clean room 10, the outdoor air unit 100 is introduced to manage the heating/cooling load by introducing outdoor air, which is outdoor air.

The foreign device management server 200 may include a database 210 , a user interface 230 , a controller 250 , and an arithmetic processing unit 270 .

The database 210 stores information related to the outdoor air management server 200, including outdoor air related information and operating condition parameters, and some of the stored information may be stored in a table format.

The user interface 230 may receive data input by the user, store it in the database 210, and output information related to control of the external device through a display (not shown).

The controller 250 collects outdoor air related information by monitoring the operation of the outer heat generator 100 , and operates the outer tank 100 including the preheating coil valve and the precooling coil valve of the outer tank 100 based on the operation control information. can be controlled.

The calculation processing unit 270 may acquire operation control information by applying the outdoor air related information to the operating point derivation logic modeled based on the past history data of the outdoor air unit 100 and then reflecting the operating condition parameters.

The outdoor air-related information includes at least one of the current outdoor air temperature, the current absolute humidity, the current pre-cooling coil valve rear end temperature, the current pre-heating coil valve rear end temperature, and the current cooling/dehumidifying valve rear end temperature and opening degree measured in the outdoor air unit 100. can do.

In addition, the operating condition parameters are the normal mode target temperature (set point) application period, target temperature change range limit, target temperature minimum and maximum limit, target temperature increase/decrease range, rapid change mode application period, sudden change mode condition and control valve (control valve) : CV) may include manual changes.

The operating condition parameter is arbitrarily determined so that when the operation of the external device 100 is controlled based on the driving control information derived by calculating the operation point derivation logic, the operating state of the external device 100 can be controlled so that the operating state does not change suddenly and is stable. It may be losing information.

The calculation processing unit 270 calculates the relationship between past history data of the outdoor air heater including absolute humidity, outdoor temperature, cooling/dehumidification valve opening, pre-cooling coil valve rear end temperature, and WSS (Water showering system) rear end dew point temperature based on a linear model. By performing polynomial regression analysis, the operating point derivation logic can be derived.

10 is a flowchart for explaining a method of operating an external device system according to an embodiment of the present invention.

First, the outdoor air unit system 20 is at least one of the current outdoor air temperature, the current absolute humidity, the current pre-cooling coil valve rear end temperature, the current pre-heating coil valve rear end temperature, and the current cooling/dehumidifying valve rear end temperature and opening degree measured by the outdoor air unit 100. Outdoor air-related information including one or more may be collected (S101).

Next, the external device system 20 may receive the operating condition parameter (S103). In this case, the operating condition parameter may be a value arbitrarily set based on information to be considered when controlling the operation of the external device 100 .

Next, the external device system 20 applies the external air related information to the operating point derivation logic modeled based on the past history data of the external device 100 and reflects the operating condition parameters to target the preheating coil of the external device 100 . Operation control information including a temperature (pre-heating coil set point) and a pre-cooling coil set point (pre-cooling coil set point) may be acquired ( S105 ).

At this time, the outdoor air conditioning system 20 applies the current outdoor temperature, the current absolute humidity, and the current cooling and dehumidifying valve opening to the operating point derivation logic, but the cooling and dehumidifying valve opening is the lowest (low limit) and the WSS rear dew point temperature is the target value. The temperature at the rear end of the phosphorus precooling coil valve can be calculated.

Also, the outer heating system 20 may calculate a pre-heating coil set point and a pre-cooling coil set point based on the calculated pre-cooling coil valve rear end temperature.

Next, the external device system 20 calculates the temperature coefficient at the rear end of the precooling coil valve based on the delta value between the actually measured current WSS rear end dew point temperature and the target WSS rear end dew point temperature derived through the operation point derivation logic, and the calculated The temperature coefficient at the rear end of the precooling coil valve may be updated in the operation point derivation logic (S107).

FIG. 11 is a flowchart for describing a part of FIG. 10 in detail, and a case in which the operation state of the arithmetic processing server is checked will be described as an example.

Referring to FIG. 11 , the database 210 of the external device management server 200 may store current operation state information transmitted from the calculation processing server 300 ( S201 ).

At this time, the current operation state information is information indicating whether the operation state of the arithmetic processing server 300 is normal or abnormal, and may be in the form of information set in advance (eg, a flag, a symbol, an English abbreviation, etc.) have.

For example, it may be 1 when the operation state of the operation processing server is normal, and 0 when the operation state of the operation processing server is abnormal.

The arithmetic processing server 300 may transmit the current operation state information to the foreign guinea pig management server 200 according to a pre-set condition, including a preset period, a response to a request from the foreign guinea pig management server 200 .

Step S201 may be a step in which the operation processing server 300 transmits the current operation state information for the first time before the operation point derivation logic operation.

Next, the foreign device management server 200 may determine whether the calculation processing server 300 is operating normally based on the current operation state information transmitted from the calculation processing server 300 ( S203 ).

In this case, the user interface 230 may output current operation state information through a display (not shown) so that the user can check whether the operation processing server 300 is operating normally.

Steps S201 and S203 described above may be performed before step S101 of FIG. 10 , but are not limited thereto.

Although not shown, the calculation processing server 300 may transmit its current operation state information to the external device management server 200 even afterward.

FIG. 12 is a flowchart for explaining a part of FIG. 10 in detail, and a case in which operation control information is acquired will be described as an example.

Before the step of acquiring the operation control information of step S105 of FIG. 10 , the outdoor air conditioner system 20 is the outside air absolute humidity, outside air temperature, cooling/dehumidifying valve opening degree, pre-cooling coil valve rear end temperature, and WSS (Water showering system) rear end dew point temperature By performing polynomial regression analysis based on a linear model on the relationship between past history data of the exogenous device 100 including

Next, the controller 200 in the external device management server 200 of the external device system 20 may transmit and store the external device related information measured by the external device 100 to the database 210 (S303, S305). ).

In this case, the database 210 may store outdoor air related information, and some of the stored information may be stored in a table format.

The outdoor air-related information includes at least one of the current outdoor air temperature, the current absolute humidity, the current pre-cooling coil valve rear end temperature, the current pre-heating coil valve rear end temperature, and the current cooling/dehumidifying valve rear end temperature and opening degree measured in the outdoor air unit 100. can do.

Next, the database 210 may transmit outdoor air-related information according to the request of the calculation processing server 300 (S307).

Next, the database 210 may receive and store the operating condition parameters input by the user through the user interface 230 ( S309 and S311 ).

At this time, the operating condition parameters are the normal mode target temperature (set point) application period, target temperature change range limit, target temperature minimum and maximum limit, target temperature increase/decrease range, rapid change mode application period, sudden change mode condition and control valve (control valve) : CV) may include manual changes.

The operating condition parameter is arbitrarily determined so that when the operation of the external device 100 is controlled based on the driving control information derived by calculating the operation point derivation logic, the operating state of the external device 100 can be controlled so that the operating state does not change suddenly and is stable. It may be losing information. These operating condition parameters may be reflected before obtaining final operation control information, which will be described later.

Next, the database 210 may transmit the operation condition parameter according to the request of the arithmetic processing server 300 (S313).

Next, the calculation processing server 300 applies the outdoor air related information to the driving point derivation logic modeled based on the past history data of the outdoor air unit 100, and then reflects the operating condition parameters to obtain driving control information ( S315).

At this time, the arithmetic processing server 300 applies the current outdoor temperature, the current absolute humidity, and the current cooling and dehumidifying valve opening to the operating point derivation logic, but the cooling and dehumidifying valve opening is the lowest (low limit) and the WSS rear end dew point temperature is A target value of the pre-cooling coil valve rear end temperature is calculated, and a pre-heating coil set point and a pre-cooling coil set point are calculated based on the calculated pre-cooling coil valve rear end temperature. can do.

Also, the calculation processing server 300 may correct the calculated target preheating coil temperature and the precooling coil target temperature according to season-specific correction conditions.

13 is a flowchart for describing a part of FIG. 10 in detail.

The calculation processing server 300 checks whether the absolute value of the difference between the target preheating coil target temperature and the precooling coil target temperature calculated in step S105 of FIG. 10 and step S315 of FIG. 12 and each current value satisfies the sudden change mode condition. can be (S401).

The calculation processing server 300 may output the operation control information in the normal mode or the sudden change mode according to the result of the check in step S401 .

In this case, in the normal mode, the preheating coil target temperature and the precooling coil target temperature calculated by the arithmetic processing server 300 are transmitted to the external heating device management server 200 according to a set period to control the operation of the external heating device 100 . can mean

의 갭 차이가 설정값 이상인 경우 CV값을 상승 또는 하강시키기 위한 모드를 의미할 수 있다. 이때, SP(set point)는 예열 코일 목표온도 또는 예냉 코일 목표온도일 수 있고, PV(present value)는 외조기(100)의 현재 측정값, 예를 들어, 현재 예열 코일 온도 또는 현재 예냉 코일 온도일 수 있으며, CV(control valve output)는 예열 코일 밸브 또는 예냉 코일 밸브의 출력을 의미할 수 있다. 이때, 급변 모드는 CV 개도율 변경값, 급변 모드를 구동하는 시간 등을 포함할 수 있다.Also, the sudden change mode is

When the gap difference of ' is greater than or equal to the set value, it may mean a mode for raising or lowering the CV value. In this case, SP (set point) may be a preheating coil target temperature or a precooling coil target temperature, and PV (present value) is a current measured value of the outer heater 100 , for example, a current preheating coil temperature or a current precooling coil temperature. may be, and CV (control valve output) may mean an output of the preheating coil valve or the precooling coil valve. In this case, the sudden change mode may include a CV opening rate change value, a time for driving the sudden change mode, and the like.

Specifically, when the operation processing server 300 does not satisfy the sudden change mode condition as a result of checking in step S401, the operation control information of the normal mode is transmitted to the external device system 20 to be stored in the database 210. It can be (S403).

Next, the database 210 may transmit the stored normal mode operation control information to the controller 250 to control the external device 100 ( S405 ).

Next, the controller 250 may control the valve of the external heater 100 based on the preheating coil target temperature and the precooling coil target temperature included in the operation control information of the normal mode ( S407 ). That is, the controller 250 may control the related valves so that the preheating coil and the precooling coil of the outer heater 100 reach a target temperature.

On the other hand, as a result of checking in step S401, if the sudden change mode condition is satisfied, the arithmetic processing server 300 transmits the operation control information of the sudden change mode to the external device system 20 to be stored in the database 210. (S409).

Next, the database 210 may transmit the stored operation control information of the sudden change mode to the controller 250 to control the external device 100 ( S411 ).

Next, the controller 250 may control the valve of the outer heater 100 based on the target preheating coil temperature and the precooling coil target temperature included in the operation control information of the sudden change mode (S413). In this case, the controlled valve of the external heat generator 100 may mean a preheating coil valve and a precooling coil valve, but is not limited thereto, and the preheating coil temperature and the precooling coil temperature are maintained at the preheating coil target temperature and the precooling coil target temperature. It will also be possible to include additional valves as required.

According to an embodiment of the present invention, as the operation of the outer heat generator 100 is controlled based on the optimal preheating coil valve target temperature and the precooling coil valve target temperature for each outdoor air, the outside air is cooled by the cooling coil 103 and The effect of maintaining a constant temperature while passing the WSS 104 can be expected.

In addition, in the embodiment of the present invention, since the temperature of the rear end of the WSS is constant, the temperature of the heating coil 105 may be constant and thus the amount of humidification may be constant, and thus steam used for humidification may be reduced.

Those of ordinary skill in the art to which the present invention pertains, since the present invention can be embodied in other specific forms without changing the technical spirit or essential characteristics thereof, the embodiments described above are illustrative in all respects and not limiting. have to understand The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

10: clean room 20: external device system
100: Ojogi 200: Ojogi management server
210: database 230: user interface
250: controller 270: arithmetic processing unit
300: arithmetic processing server

Claims (19)

an external device management server for storing and providing external air related information and operating condition parameters, and controlling the driving of the external device based on the operation control information transmitted from the calculation processing server; and
an arithmetic processing server that obtains the operation control information by applying the outdoor air-related information to an operating point derivation logic modeled based on the past history data of the outdoor air unit, and then reflecting the operating condition parameter;
An external device system comprising a. According to claim 1,
The arithmetic processing server,
A polynomial regression analysis was performed based on a linear model of the relationship between the historical data of the outdoor air unit, including absolute humidity, outdoor temperature, cooling/dehumidification valve opening, precooling coil valve rear end temperature, and WSS (water showering system) rear dew point temperature. to derive the operating point derivation logic. 3. The method of claim 2,
The arithmetic processing server,
The current outside air temperature, the current absolute humidity, and the current cooling/dehumidifying valve opening degree are applied to the operating point derivation logic, but the temperature at the rear end of the precooling coil valve in which the cold/dehumidification valve opening is the lowest value and the dew point temperature after the WSS is the target value. and calculating a pre-heating coil set point and a pre-cooling coil set point based on the calculated rear end temperature of the pre-cooling coil valve. 4. The method of claim 3,
The arithmetic processing server,
An external device system for correcting the target temperature of the preheating coil and the target temperature of the precooling coil according to season-specific correction conditions. 4. The method of claim 3,
The arithmetic processing server,
It is checked whether the absolute value of the difference between the target temperature of the preheating coil and the target temperature of the precooling coil and the respective current values satisfies the sudden change mode condition, and according to the check result, the operation control information is output in the normal mode, or An external device system that outputs in a sudden change mode. 4. The method of claim 3,
The arithmetic processing server,
Calculate the precooling coil valve rear end temperature coefficient based on the delta value between the actually measured current WSS rear end dew point temperature and the target WSS rear end dew point temperature derived through the operation point derivation logic, and calculate the calculated rear end temperature coefficient of the precooling coil valve An external device system that updates the driving point derivation logic. According to claim 1,
The external device management server,
a database that stores information related to the outdoor air system, including the outdoor air related information and the operating condition parameters, and stores some of the stored information in a table format;
a user interface for receiving data input by a user, storing the data in the database, and outputting information related to control of the external device through a display; and
a controller for monitoring the operation of the external device to collect the outdoor air related information, and controlling the operation of the external device including the preheating coil valve and the precooling coil valve of the external device based on the operation control information;
An external device system comprising a. 8. The method of claim 7,
The outdoor air-related information is
The system comprising at least one of the current outdoor air temperature, the current absolute humidity of the outdoor air, the current pre-cooling coil valve rear end temperature, the current pre-heating coil valve rear end temperature, and the current cooling/dehumidifying valve rear end temperature and opening degree measured in the outdoor air unit. 8. The method of claim 7,
The operating condition parameter is
The external device system including the normal mode target temperature application period, target temperature change range limit, target temperature minimum and maximum limit, target temperature increase/decrease range, rapid change mode application period, sudden change mode condition and manual change value of control valve. 8. The method of claim 7,
The operation control information is
An outer heater system comprising a pre-heating coil set point and a pre-cooling coil set point. 8. The method of claim 7,
The database stores current operation state information transmitted from the arithmetic processing server,
The user interface is
An external device system for outputting the current operation state information so that a user can check whether the operation processing server is operating normally. Collecting outdoor air-related information including at least one of the current outdoor air temperature, the current absolute humidity of the outdoor air, the current pre-cooling coil valve rear end temperature, the current pre-heating coil valve rear end temperature, and the current cooling and dehumidifying valve rear end temperature and opening degree measured in the outdoor air unit ;
receiving an operating condition parameter; and
After applying the outdoor air-related information to the operation point derivation logic modeled based on the past history data of the outdoor unit, the operating condition parameter is reflected, and the pre-heating coil set point of the outdoor unit and pre-cooling obtaining operation control information including a pre-cooling coil set point;
A method of operating an external organ system comprising a. 13. The method of claim 12,
Before obtaining the operation control information,
A polynomial regression analysis was performed based on a linear model on the relationship between the historical data of the outdoor air tank, including the absolute humidity of the outdoor air, the outdoor temperature, the opening degree of the cooling/dehumidifying valve, the temperature after the pre-cooling coil valve, and the dew point temperature after the WSS (Water showering system). deriving the operating point derivation logic,
The method of operation of the external device system further comprising a. 13. The method of claim 12,
In the step of obtaining the operation control information,
The current outside air temperature, the current absolute humidity, and the current cooling/dehumidifying valve opening degree are applied to the operating point derivation logic, but the temperature at the rear end of the precooling coil valve in which the cold/dehumidification valve opening is the lowest value and the dew point temperature after the WSS is the target value. , and calculating a pre-heating coil set point and a pre-cooling coil set point based on the calculated rear end temperature of the pre-cooling coil valve. 15. The method of claim 14,
In the step of obtaining the operation control information,
The operating method of the external heating system for correcting the target temperature of the preheating coil and the target temperature of the precooling coil according to season-specific correction conditions. 15. The method of claim 14,
The step of obtaining the operation control information includes:
It is checked whether the absolute value of the difference between the target temperature of the preheating coil and the target temperature of the precooling coil and the respective current values satisfies the sudden change mode condition, and according to the check result, the operation control information is output in the normal mode, or outputting in rapid change mode,
The method of operation of the external device system further comprising a. 15. The method of claim 14,
After obtaining the operation control information,
Calculate the precooling coil valve rear end temperature coefficient based on the delta value between the actually measured current WSS rear end dew point temperature and the target WSS rear end dew point temperature derived through the operation point derivation logic, and calculate the calculated rear end temperature coefficient of the precooling coil valve updating the operating point derivation logic;
The method of operation of the external device system further comprising a. A database that stores information related to the outdoor air management server, including outdoor air related information and operating condition parameters, and stores some of the stored information in a table format;
a user interface for receiving data input by a user, storing the data in the database, and outputting information related to control of an external device through a display;
an arithmetic processing unit configured to obtain the operation control information by applying the outdoor air-related information to an operating point deriving logic modeled based on the past history data of the outdoor air unit, and then reflecting the operating condition parameter; and
a controller for monitoring the operation of the external device to collect the outdoor air related information, and controlling the operation of the external device including the preheating coil valve and the precooling coil valve of the external device based on the operation control information;
A management server comprising a foreign instrument. 19. The method of claim 18,
The arithmetic processing unit,
A polynomial regression analysis was performed based on a linear model on the relationship between the historical data of the outdoor air tank, including the absolute humidity of the outdoor air, the outdoor temperature, the opening degree of the cooling/dehumidifying valve, the temperature after the pre-cooling coil valve, and the dew point temperature after the WSS (Water showering system). to derive the driving point derivation logic, the external device management server.

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