KR102250065B1 - Operation control method and operation control system of cooling tower capable of saving energy based on variation of air temperature, and cooling tower comprising the same - Google Patents

Abstract

The present invention relates to an operation control method and an operation control system of a cooling tower capable of saving energy based on variation of air temperature, and a cooling tower including the same, which are able to variably control the operation of the cooling tower based on the air temperature, reduce the power energy used for operating the cooling tower, prevent the freezing and rupture of a filler, and relieve an environmental problem of noise being generated. In accordance with the present invention, in the method for controlling the operation of the cooling tower, which comprises: an air blower driving apparatus which drives an air blower fan for flowing the air which exchanges heat with cooling water; a filler which exchanges heat with the cooling water; and a water collection unit which collects the cooling water which has exchanged heat with the air in the filler, the method is able to detect one or more of an external air temperature and the cooling water exit temperature of the collection unit, and control by reducing or increasing by stage the power consumption of the air blower driving apparatus in accordance with one or more of the detected external air temperature and the cooling water exit temperature.

Description

Air temperature variable energy saving cooling tower operation control method, air temperature variable energy saving cooling tower operation control system, and ambient temperature variable energy saving cooling tower including the same (OPERATION CONTROL METHOD AND OPERATION CONTROL SYSTEM OF COOLING TOWER CAPABLE OF SAVING ENERGY BASED ON VARIATION OF AIR TEMPERATURE, AND COOLING TOWER COMPRISING THE SAME}

The present invention relates to an air temperature variable energy-saving cooling tower operation control method, an air temperature variable energy-saving cooling tower operation control system, and an air temperature variable energy-saving cooling tower including the same, and more particularly, to an operation of the cooling tower based on the air temperature. By variably controlling the power energy consumed during the operation of the cooling tower, it is possible to reduce the environmental problems such as freeze protection and noise generation of the filler, and the operation control method of the energy saving cooling tower with variable air temperature, the operation of the energy saving cooling tower with variable air temperature. It relates to a control system, and an air temperature variable energy-saving cooling tower including the same.

In the cooling tower, the cooling tower serves to cool the cooling water used for condensing a refrigerant flowing through an air conditioner or a refrigerator, that is, in contact with air.

Such a cooling tower injects cooling water into the air to heat-exchange the high-temperature cooling water, or allows the flowing cooling water to come into contact with the blown air. Accordingly, the cooling efficiency of the cooling water can be controlled substantially according to the amount of air sucked into the cooling tower.

On the other hand, in winter, when the temperature is relatively low, the air that reaches the saturation humidity by contact with the cooling water increases and the air that reaches the saturation humidity is discharged to the outside of the cooling tower. ) Phenomenon occurs. Various technologies have been applied to prevent such a white smoke phenomenon. For example, the cooling water and heat exchanged air are mixed with the external air sucked into the cooling tower and then discharged to the outside of the cooling tower, thereby preventing the white smoke phenomenon. I can.

In other words, the cooling tower is a type of heat exchange device that cools the water by directly connecting it with outdoor air to re-use the cooling water used in the condenser of the refrigerator, and is largely divided into a counter flow type and a cross flow type by a heat exchange method. In addition, according to the ventilation method, it is divided into a press-in ventilation type and a suction ventilation type.

In all heat exchange methods and forced ventilation methods of cooling towers, when water is connected to cold air, part of the water evaporates. At this time, the water temperature is lowered by taking the heat required for evaporation. The cooling tower uses a ventilation fan that introduces external air to connect water to the cold air.

A cooling tower is a device that cools circulating water using the evaporation heat of water, and is widely used in power plants, petrochemicals, steel making, and semiconductor manufacturing. In this process, power energy is consumed for the operation of the blowing fan for air flow and the cooling water pump for circulation of coolant, and white smoke generation, noise, and vibration problems occur during the operation of the blowing fan and the circulation of coolant.

On the other hand, as a conventional technology related to the control of such a cooling tower, it has been proposed in Korean Patent Publication No. 10-0863771 (Cooling Tower Control Method Applying Active Control), and Korean Patent Publication No. 10-1250560 (Cooling Tower Control Method). .

Specifically, in Korean Patent Publication No. 10-0863771, the number of revolutions of the blower is controlled by comparing the cooling water outlet temperature and the outside wet bulb temperature. And in Korean Patent Publication No. 10-1250560, in the initial stage, the blower fan is driven at the maximum rotational speed, lowering the outlet temperature of the cooling water to a set value, and then adding the power consumption of the cooling water pump and the blowing fan when white smoke does not occur. Therefore, the rotational speed of the blowing fan is controlled to minimize the power consumption, and when white smoke is generated, the blowing fan is driven at the maximum rotational speed to mix the cooling water and heat-exchanged air to generate white smoke. Is controlled to be inhaled.

However, in the case of Korean Patent Publication No. 10-0863771, there is a disadvantage that the reduction of the white smoke phenomenon is not made more actively, and in the case of Korean Patent Publication No. 10-1250560, the blowing fan is irrespective of the degree of the white smoke phenomenon. By being driven at this maximum rotational speed, unnecessary power consumption or subcooling of the cooling water may occur.

Korean Registered Patent Publication 10-0863771 (Announcement on October 16, 2008) Republic of Korea Patent Publication 10-1250560 (2013.04.03. Announcement) Republic of Korea Patent Publication 10-2070685 (announcement on January 21, 2020) Republic of Korea Patent Publication 10-2020-0037913 (published on April 10, 2020)

Therefore, the present invention for solving the above-described conventional problem, by variably controlling the operation of the cooling tower based on the ambient temperature, it is possible to reduce the power energy consumed during the operation of the cooling tower, and prevent freezing of the filler and the environment of noise generation. An object thereof is to provide an air temperature variable energy-saving cooling tower operation control method, an air temperature variable energy-saving cooling tower operation control system, and an air temperature variable energy-saving cooling tower including the same, which can alleviate the problem.

The problem of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention for achieving the objects and other features of the present invention, a blower drive device for driving a blower fan for flowing air that is heat-exchanged with cooling water, a filler for heat exchange with the cooling water, and the In a method for controlling an operation of a cooling tower including a water collecting unit in which coolant heat-exchanged with air in a filler material is collected, comprising: detecting at least one of an outside temperature and an outlet temperature of cooling water discharged from the collecting unit, and detecting the detected outside temperature and There is provided a cooling tower operation control method, characterized in that the power consumption of a blower driving device is gradually reduced or increased and controlled according to at least one of the cooling water outlet temperatures.

In one aspect of the present invention, the control of the power consumption of the blower driving device includes: a first control step configured to control the power consumption of the blower drive device to 100% at a first detected outside air temperature or a first cooling water outlet temperature; A second control step configured to control the power consumption of the blower driving device to 40% at a second detected outside temperature lower than the first detected outside temperature or a second coolant outlet temperature lower than the first coolant outlet temperature; And a third control step of controlling the power consumption of the blower drive device to be zero at a third detected outside temperature lower than the second detected outside temperature or a third coolant outlet temperature lower than the second coolant outlet temperature. It may include.

In one aspect of the present invention, the first control step controls the power consumption of the blower driving device to 100% when the outside wet bulb temperature is 27°C or higher or the outside dry bulb temperature is 32°C or higher as the first detected outdoor air temperature, and In the second control step, when the outside wet bulb temperature is 3°C or more and less than 27°C, and the outdoor dry bulb temperature is 5°C or more and less than 32°C, the power consumption of the blower driving device is set to 40%. In the third control step, when the outside wet bulb temperature is 2°C or less as the third detected outside air temperature, and the outside dry bulb temperature is 4°C or less, the power consumption of the blower driving device may be controlled to be zero. have.

In one aspect of the present invention, in the first control step, when the first coolant outlet temperature is greater than or equal to 31°C, the power consumption of the blower driving device is controlled to 100%, and the second control step includes the second coolant outlet temperature. The power consumption of the blower drive system is controlled to 40% when the temperature is less than 24℃ to less than 31℃, and in the third control step, when the third cooling water outlet temperature is less than 23℃, the power consumption of the blower drive device is zero. Can be controlled to be.

In one aspect of the present invention, the third control step may further include bypassing the cooling water to the water collecting unit without supplying the cooling water to the filler.

According to another aspect of the present invention, a blower driving device for driving a blower fan for flowing air that is heat-exchanged with cooling water, a filler for heat exchange with the cooling water, and a collecting part for collecting the cooling water heat-exchanged with air in the filler. A system for controlling the operation of a cooling tower including, comprising: an outside temperature detector configured to detect an outside temperature; A cooling water outlet temperature detection unit provided at the cooling water outlet of the water collecting unit and detecting a temperature of the discharged cooling water; And an operation control unit configured to gradually reduce or increase the operation of the blower driving device according to the detected temperature detected by at least one of the outside temperature detection unit and the cooling water outlet temperature detection unit. A system is provided.

In another aspect of the present invention, the outside air temperature detection unit is configured to detect a wet bulb temperature and a dry bulb temperature, the cooling water outlet temperature detection unit is composed of a temperature sensor, and the operation control unit includes the outside air temperature detection unit and the cooling water outlet temperature detection unit. When the temperature transmitted from each is the first detection temperature, the power consumption of the blower driving device is controlled to 100%, and when the second detection temperature is lower than the first detection temperature, the power consumption of the blower driving device Is controlled to 40%, and when the third detection temperature is lower than the second detection temperature, the power consumption of the blower driving device may be controlled to be zero.

In another aspect of the present invention, the first detection temperature is an outdoor wet bulb temperature of 27°C or higher, an outdoor dry bulb temperature of 32°C or higher, the cooling water outlet temperature is 31°C, and the second detection temperature is outside air. The wet bulb temperature is 3℃ or more to less than 27℃, the outdoor dry bulb temperature is 5℃ or more to less than 32℃, the cooling water outlet temperature is 26℃ or more and 28℃ or less, and the third detection temperature is the outside wet bulb temperature of 2 ℃ or less, the outside air dry bulb temperature is 4 ℃ or less, the cooling water outlet temperature is 23 ℃ or less, the operation control unit, the outside air wet bulb temperature at the second detection temperature is 15 ℃, the outside air dry bulb temperature is 19 ℃, the 2 When the cooling water outlet temperature is in the range of 26℃ to 28℃ as the reference second detection temperature, the power consumption of the blower driving device is controlled to 40%, and the power consumption of the blower driving device is controlled to be lower or higher stepwise than the reference second detection temperature. In this case, it is possible to control to lower or increase the power consumption of the blower driving device in stages according to this.

In another aspect of the present invention, the operation control unit may further include controlling to bypass the water collecting unit without supplying the coolant to the filler when the temperature is at the third detection temperature.

According to another aspect of the present invention, there is provided a cooling tower including the above-described cooling tower operation control system.

According to the operation control method of an energy saving cooling tower with variable air temperature, an energy saving cooling tower operation control system with variable air temperature, and an energy saving cooling tower including the same according to the present invention, the following effects are provided.

First, according to the present invention, by variably controlling the operation of the cooling tower according to the season or based on the ambient temperature, it is possible to reduce the power energy consumed during the operation of the cooling tower, thereby improving economic efficiency.

Second, the present invention has an effect of preventing freezing of the heat exchange filler in winter by not executing heat exchange filler and heat exchange (land water) by controlling the operation of the cooling tower only by circulation of cooling water when the blower operation is unnecessary. .

Third, the present invention has the effect of minimizing or not executing the operation of the blower, thereby reducing or preventing environmental problems caused by noise generated by the operation of the blower.

The effects of the present invention are not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a view showing the configuration of an embodiment of a cooling tower to which an air temperature variable energy-saving cooling tower operation control method and an air temperature variable energy-saving cooling tower operation control system according to the present invention are applied.
FIG. 2 is a block diagram schematically showing the configuration of an air temperature variable energy-saving cooling tower operation control system according to the present invention.
3 is a diagram showing an embodiment of a control circuit diagram of a control unit configured in the energy saving cooling tower operation control system of a variable air temperature according to the present invention.

Additional objects, features, and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention is capable of various modifications and various embodiments, and the examples described below and shown in the drawings are intended to limit the present invention to specific embodiments. It should be understood as including all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

In addition, terms such as "... unit", "... unit", "... module" described in the specification mean a unit that processes at least one function or operation, which is hardware, software, or hardware and It can be implemented as a combination of software.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components regardless of the reference numerals, and redundant descriptions thereof will be omitted. In describing the present invention, when it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, throughout the specification of the present application, when a step is positioned "on" or "before" another step, this is not only a case in which a step is in a direct time series relationship with another step, but also with the mixing step after each step. Likewise, the order of the two steps includes the same rights as in the case of an indirect time-series relationship that can change the order of the time series.

Hereinafter, an air temperature variable energy saving cooling tower operation control method, an air temperature variable energy saving cooling tower operation control system, and an air temperature variable energy saving cooling tower including the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. . 1 is a view showing the configuration of an embodiment of a cooling tower to which an air temperature variable energy-saving cooling tower operation control method and an air temperature variable energy-saving cooling tower operation control system according to the present invention are applied.

First, a description will be given of a method for controlling an operation of an energy-saving cooling tower with variable air temperature according to the present invention.

A method for controlling an operation of an energy-saving cooling tower with a variable ambient temperature according to the present invention includes, as a first embodiment, a blowing drive device 10 for driving a blowing fan 11 for forming a flow of air that is heat-exchanged with supplied cooling water, In the method for controlling the operation of a cooling tower comprising a filler 20 for heat-exchanging with cooling water, and a collecting unit 30 for collecting cooling water heat-exchanged with air in the filler 20, the method for controlling an operation of a cooling tower, comprising: , It is characterized in that the power consumption of the blower driving device 10 is gradually reduced or increased and controlled according to the detected outside air temperature. Reference numeral 41 is a bypass pipe, 42 is an automatic check valve, and 43 is a cooling water supply pipe.

Specifically, the air temperature variable energy-saving cooling tower operation control method according to the first embodiment of the present invention is configured to control the power consumption of the blower drive device 10 to 100% at the first detected outside temperature in which the outside temperature is detected. A first control step; A second control step configured to control the power consumption of the blower driving device 10 to 40% at a second detected outside temperature lower than the first detected outside temperature; And controlling the power consumption of the blowing drive device 10 to zero at a third detected outside temperature lower than the second detection outside temperature, that is, not driving the operation of the blowing drive device 10. It includes; 3 control steps.

The first control step is performed to control the power consumption of the blower driving device 10 to 100% when the outside wet bulb temperature is 27°C or higher or the outside dry bulb temperature is 32°C or higher as the first detected outside air temperature.

In addition, the second control step is the second detection outside air temperature, when the outside wet bulb temperature is 3°C or more to less than 27°C, and the outside air dry bulb temperature is 5°C or more to less than 32°C, the power consumption of the blower drive device 10 Is made to control to 40%.

Here, the second control step further subdivides the detected second detected outside air temperature, and gradually decreases or increases the power consumption of the blower drive 10 from 40% according to the subdivided second detected outside temperature. Can be controlled. In other words, when the outside wet bulb temperature is 15°C and the outside dry bulb temperature is 19°C (at the reference second detection outside temperature) at the second detected outside temperature, the power consumption of the blower driving device 10 is controlled to 40%, When it is stepwise lower than the reference second detected outside air temperature, the power consumption of the blower drive 10 is controlled to be lowered to 30%, 20%, and 10% accordingly, and when it is stepwise higher than the reference second detected outside temperature, it is controlled accordingly. The power consumption of the blower drive device 10 may be increased to 50%, 60%, 70%, 80%, and 90% to be controlled.

In the third control step, when the outside wet bulb temperature is 2°C or less as the third detected outside air temperature, and the outside dry bulb temperature is 4°C or less, the power consumption of the blower driving device 10 is controlled to be zero, That is, it is controlled so as not to drive the operation (operation) of the blowing drive device 10.

Here, the third control step further includes bypassing the cooling water supplied to the filler 20 to the filler 20 to the water collecting unit 30 without supplying the cooling water supplied to the filler 20 to heat exchange with the filler 20 do. The cooling water bypassed to the water collecting part 30 is returned to the cooling water supply unit through the cooling water outlet 31 of the water collecting part 30.

As described above, the third control step corresponds to the winter season, and in this winter season, the operation of the blower driving device 10 for introducing outside air is unnecessary, and the rated cooling heat can be exhibited only by circulating the cooling water. Since the problem of freezing occurs when water is sprayed into the internal filler 20, the cooling water is not sprayed into the heat exchange filler 20, and the cooling water is automatically bypassed to the water collecting unit 30 using an automatic control valve for bypass. 20) can be prevented from freezing and breaking.

In addition, the third control step does not generate noise by the blower fan 11 when the blower drive device 10 is stopped, so that the noise environment problem during the stoppage of the blower drive device 10 can be solved. .

Meanwhile, in the method for controlling the operation of an energy-saving cooling tower with variable ambient temperature according to the present invention, the temperature of the cooling water discharged from the water collecting unit 30 is also closely related to the ambient temperature (outdoor temperature). Accordingly, the method for controlling an operation of an energy-saving cooling tower with variable air temperature according to the present invention can control the operation based on the outlet temperature of the cooling water.

That is, the air temperature variable energy-saving cooling tower operation control method according to the present invention, as a second embodiment, includes a blower drive device 10 for driving a blower fan 11 for forming a flow of air that is heat-exchanged with the supplied cooling water. , In a method for controlling the operation of a cooling tower including a filler 20 for heat exchange with the cooling water, and a water collecting unit 30 for collecting the cooling water heat-exchanged with air in the filler 20, the water collecting tank 30 ), the cooling water outlet temperature from which the cooling water is discharged is detected, and the power consumption of the blower driving device 10 is gradually reduced or increased and controlled according to the detected cooling water outlet temperature.

Specifically, the method for controlling the operation of an energy-saving cooling tower with variable air temperature according to the second embodiment of the present invention is to control the power consumption of the blowing drive device 10 to 100% at the first cooling water outlet temperature at which the cooling water outlet temperature is detected. A first control step made; A second control step configured to control the power consumption of the blower drive 10 to 40% at a second coolant outlet temperature lower than the first coolant outlet temperature; And a third cooling water outlet temperature lower than the second cooling water outlet temperature to control the power consumption of the blower drive device 10 to zero, that is, not to drive the operation of the blower drive device 10. It includes; 3 control steps.

In the first control step, when the temperature detected by the temperature sensor installed at the cooling water outlet of the water collecting unit 30 as the first cooling water outlet temperature is 31° C. or higher, the power consumption of the blower driving device 10 is controlled to 100%. .

In addition, the second control step is the second cooling water outlet temperature, when the temperature detected by the temperature sensor installed at the cooling water outlet of the water collecting unit 30 is more than 24℃ to less than 31℃, the power consumption of the blower drive device 10 Is made to control to 40%.

Here, in the second control step, the detected second coolant outlet temperature is further subdivided, and the power consumption of the blower drive 10 is gradually reduced or increased from 40% according to the subdivided second coolant outlet temperature. Can be controlled. In other words, when the second cooling water outlet temperature is in the range of 26°C to 28°C (when the second cooling water outlet temperature is the reference), the power consumption of the blower drive 10 is controlled to 40%, and the second cooling water outlet is the standard. When the temperature is stepwise lower than the temperature, the power consumption of the blower drive device 10 is controlled to be lowered to 30%, 20%, and 10% accordingly, and if it is stepwise higher than the reference second coolant outlet temperature, the blower drive device 10 accordingly ) Can be controlled by increasing the consumption power of 50%, 60%, 70%, 80%, 90%.

In the third control step, when the temperature detected by the temperature sensor installed at the cooling water outlet of the water collecting unit 30 as the third cooling water outlet temperature is less than or equal to 23°C, the power consumption of the blower driving device 10 is zero. Control so as to be, that is, control so as not to drive the operation (operation) of the blowing drive device (10).

Here, the third control step further includes bypassing the cooling water supplied to the filler 20 to the filler 20 to the water collecting unit 30 without supplying the cooling water supplied to the filler 20 to heat exchange with the filler 20 do. The cooling water bypassed to the water collecting part 30 is returned to the cooling water supply unit through the cooling water outlet 31 of the water collecting part 30.

As described above, the third control step corresponds to the winter season, and in this winter season, the operation of the blower driving device 10 for introducing outside air is unnecessary, and the rated cooling heat can be exhibited only by circulating the cooling water. Since the problem of freezing occurs when water is sprayed into the internal filler 20, the cooling water is not sprayed into the heat exchange filler 20, and the cooling water is automatically bypassed to the water collecting unit 30 using an automatic control valve for bypass. 20) can be prevented from freezing and breaking.

In addition, the third control step does not generate noise by the blower fan 11 when the blower drive device 10 is stopped, so that the noise environment problem during the stoppage of the blower drive device 10 can be solved. .

On the other hand, the air temperature variable energy-saving cooling tower operation control method according to the present invention, as described above, the first embodiment and the second embodiment can be made in each embodiment, the first embodiment and the second embodiment are merged. It may be made in an embodiment. In other words, it may be configured to detect the outside air temperature, detect the coolant outlet temperature, and control the power consumption of the blower driving device 10 according to a predetermined operating condition according to the corresponding outside temperature and the coolant outlet temperature.

In the case of the embodiment in which the first embodiment and the second embodiment are merged as described above, more accurate and precise control is possible as compared to an embodiment in which each embodiment is independently executed.

On the other hand, the air temperature variable energy-saving cooling tower operation control system according to the present invention will be described with reference to FIGS. 2 and 3 in addition to FIG. 1. 2 is a block diagram schematically showing the configuration of the air temperature variable energy-saving cooling tower operation control system according to the present invention, and FIG. 3 is a control of a control unit configured in the air temperature variable energy-saving cooling tower operation control system according to the present invention. It is a figure showing an embodiment of a circuit diagram.

An air temperature variable energy saving cooling tower operation control system according to the present invention includes, as shown in FIGS. 1 to 3, an outside temperature detection unit 100; Cooling water outlet temperature detection unit 200; And a driving control unit 300;

Specifically, the air temperature variable energy-saving cooling tower operation control system according to the present invention, as shown in Figs. 1 to 3, is a blowing drive that drives the blowing fan 11 that forms a flow of air that is heat-exchanged with the supplied cooling water. As a system for controlling the operation of a cooling tower comprising an apparatus 10, a filler 20 for exchanging heat with the cooling water, and a collecting unit 30 for collecting coolant heat exchanged with air in the filler , An outside temperature detection unit 100 for detecting the outside temperature; A cooling water outlet temperature detection unit 200 provided at the cooling water outlet 31 of the water collecting unit 30 to detect a temperature of the discharged cooling water; And a driving control unit 300 configured to control the operation of the blower driving device 10 according to a temperature detected by at least one of the outside temperature detection unit 100 and the coolant outlet temperature detection unit 200.

The outside temperature detection unit 100 includes a wet bulb thermometer 110 for detecting the wet bulb temperature of the outside air, and a dry bulb thermometer 120 for detecting the dry bulb temperature of the outside air, or an integrated wet bulb-dry bulb thermometer. In this way, the outside temperature detection unit 100 including the wet bulb thermometer 110 and the dry bulb thermometer 120 detects the wet bulb temperature and the dry bulb temperature and transmits the detection to the operation control unit 300 to be described below.

Subsequently, the coolant outlet temperature detection unit 200 may be made of a temperature sensor provided at the coolant outlet 31 of the water collecting unit 30, and the coolant outlet temperature detected by this temperature sensor is transmitted to the operation control unit 300. do.

Next, the operation control unit 300 receives the temperature detected by each of the outside air temperature detection unit 100 and the cooling water outlet temperature detection unit 200, and power consumption of the blower driving device 10 according to the received detection temperature. It is made to control by gradually decreasing or increasing.

Specifically, when the temperature received from each of the outside temperature detection unit 100 and the cooling water outlet temperature detection unit 200 is the first detection temperature, the operation control unit 300 determines the power consumption of the blower driving device 10 by 100 %, and when the temperature transmitted from each of the outside air temperature detection unit 100 and the cooling water outlet temperature detection unit 200 is a second detection temperature lower than the first detection temperature, the power consumption of the blower drive device 10 Is controlled to 40%, and when the temperature received from each of the outside temperature detection unit 100 and the cooling water outlet temperature detection unit 200 is a third detection temperature lower than the second detection temperature, the blower drive device 10 It is made to control the power consumption of zero (zero), that is, so as not to drive the operation of the blower drive (10).

The operation control unit 300, at the first detection temperature, the outside air wet bulb temperature detected by the outside air temperature detection unit 100 is 27°C or higher, the outdoor dry bulb temperature is 32°C or higher, and the cooling water outlet temperature is 31°C. At this time, it is made to control the power consumption of the blower drive device 10 to 100%.

In addition, in the second detection temperature, the operation control unit 300 has an outdoor wet bulb temperature of 3°C or more to less than 27°C, an outdoor dry bulb temperature of 5°C or more to less than 32°C, and the cooling water outlet temperature is 26 It is made to control the power consumption of the blower drive device 10 to 40% when it is in the range of more than ℃ ~ 28 ℃.

Here, the operation control unit 300 further subdivides the second detection temperature, and controls the power consumption of the blower drive device 10 by stepwise reduction or increase from 40% according to the subdivided second detection temperature. I can.

In other words, the operation control unit 300 consumes the blower driving device 10 when the outdoor wet bulb temperature is 15°C and the outdoor dry bulb temperature is 19°C (when the reference second detection temperature is) at the second detection temperature. The power is controlled to 40%, and when it is stepwise lower than the reference second detection temperature, the power consumption of the blower drive 10 is controlled to be lowered to 30%, 20%, and 10% accordingly, and is less than the reference second detection temperature. When the step is high, the power consumption of the blower driving device 10 may be increased to 50%, 60%, 70%, 80%, and 90% accordingly.

In addition, the operation control unit 300 at the second detection temperature, when the second cooling water outlet temperature is in the range of 26 ℃ or more ~ 28 ℃ or less (when the reference second cooling water outlet temperature) of the blowing drive device 10 The power consumption is controlled to 40%, and when it is gradually lower than the reference second cooling water outlet temperature, the power consumption of the blower drive 10 is controlled to be reduced to 30%, 20%, and 10% accordingly, and the reference second cooling water When the temperature is higher in stages than the outlet temperature, the power consumption of the blower driving device 10 may be increased to 50%, 60%, 70%, 80%, and 90% accordingly.

In the stepwise control at the second detection temperature, the operation control unit 300 controls to gradually decrease or increase when only one of the outside temperature detection unit 100 and the cooling water outlet temperature detection unit 200 is satisfied. Even if it is broken or damaged, efficient operation control can be executed.

Subsequently, when the outside wet bulb temperature is 2° C. or less, the outside dry bulb temperature is 4° C. or less, and the cooling water outlet temperature is 23° C. or less at the third detection temperature, the driving control unit 300 It is controlled so that the power consumption of is zero, that is, the operation (operation) of the blower drive device 10 is not driven.

Here, the operation control unit 300 does not supply the cooling water supplied to the filler material 20 to the filler material 20 in order to heat exchange with the filler material 20, but the automatic check valve 42 installed in the bypass pipe line 41 It further includes controlling to be directly bypassed to the water collecting unit 30 by controlling. The cooling water bypassed to the water collecting part 30 is returned to the cooling water supply unit through the cooling water outlet 31 of the water collecting part 30.

As described above, the season in which the coolant is bypassed corresponds to the winter season as a season, and in this winter season, the operation of the blower driving device 10 for introducing outside air is unnecessary, and the rated cooling heat can be exhibited only by circulating the coolant. Since the problem of freezing occurs when the cooling water is sprayed on the filling material 20 inside the cooling tower, the cooling water is automatically bypassed to the collecting unit 30 without spraying the cooling water to the heat exchange filler 20 to prevent the filler 20 from freezing and breaking. You can do it.

In addition, the cooling water bypass does not generate noise by the blower fan 11 because the operating state of the blower drive device 10 is stopped.

According to the air temperature variable energy saving cooling tower operation control method according to the present invention as described above, the air temperature variable energy saving cooling tower operation control system, and the air temperature variable energy saving cooling tower including the same, depending on the season or based on the atmospheric temperature. Thus, by variably controlling the operation of the cooling tower, power energy consumed during the operation of the cooling tower can be reduced, thereby improving economic efficiency.

In addition, according to the present invention, when the blower operation is not necessary, the cooling tower operation is controlled only by circulation of cooling water, so that the heat exchange filler and heat exchange (land water) are not executed, thereby preventing freezing of the heat exchange filler in winter, By minimizing or not executing the blower operation, there is an advantage of mitigating or preventing environmental problems caused by noise generated by the blower operation.

Although the above-described embodiments have been described by the limited drawings, a person of ordinary skill in the art can apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order from the described method, and/or components such as systems, structures, devices, circuits, etc. described are combined or combined in a form different from the described method, or other components Alternatively, even if substituted or substituted by an equivalent, an appropriate result can be achieved.

The embodiments described in the present specification and the accompanying drawings are merely illustrative of some of the technical ideas included in the present invention. Accordingly, it is obvious that the embodiments disclosed in the present specification are not intended to limit the technical idea of the present disclosure, but to explain the technical idea, and thus the scope of the technical idea of the present disclosure is not limited by these embodiments. Modification examples and specific embodiments that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention should be interpreted as being included in the scope of the present invention.

10: blow drive device
11: Blowing fan
20: filler
30: Collector
31: cooling water outlet
41: bypass pipe
42: automatic check valve
43: cooling water supply pipe
100: outside temperature detection unit
110: wet bulb thermometer
120: dry bulb thermometer
200: cooling water outlet temperature detection unit
300: driving control unit

Claims (10)

delete delete delete delete delete Controlling the operation of a cooling tower including a blower driving device for driving a blower fan for flowing air that is heat-exchanged with the coolant, a filler for heat exchange with the coolant, and a collecting unit for collecting the coolant heat-exchanged with air in the filler As a system for,
An outside temperature detection unit that detects the outside temperature;
A cooling water outlet temperature detection unit provided at the cooling water outlet of the water collecting unit and detecting a temperature of the discharged cooling water; And
Including; a driving control unit configured to control the operation of the blower drive device by stepwise reduction or increase according to the detected temperature detected by at least one of the outside temperature detection unit and the coolant outlet temperature detection unit; and
The outside air temperature detection unit is configured to detect the outside air wet bulb temperature and the outside air dry bulb temperature,
The cooling water outlet temperature detection unit is composed of a temperature sensor,
The driving control unit,
When the outside wet bulb temperature detected by the outside air temperature detection unit is 27°C or higher, the outside dry bulb temperature is 32°C or higher, and when the cooling water outlet temperature detected by the cooling water outlet temperature detection unit is 31°C, power consumption of the blower drive device Is made to control to 100%,
When the outside wet bulb temperature detected by the outside temperature detection unit is 3℃ or more and less than 27℃, and the outside air dry bulb temperature is 5℃ or more and less than 32℃, and the cooling water outlet temperature detected by the cooling water outlet temperature detection unit is 24℃ or more ~ When it is less than 31°C, it is made to control the power consumption of the blower driving device to 40%,
When the outside wet bulb temperature detected by the outside air temperature detection unit is 2°C or less, the outside dry bulb temperature is 4°C or less, and when the cooling water outlet temperature detected by the cooling water outlet temperature detection unit is 23°C or less, power consumption of the blower drive device Characterized in that it is controlled to be zero
Cooling tower operation control system.
delete The method of claim 6,
The driving control unit,
When the outside wet bulb temperature is 15°C, the outside air dry bulb temperature is 19°C, and the cooling water outlet temperature is in the range of 26°C to 28°C, the power consumption of the blower driving device is controlled to 40%,
When the outdoor wet bulb temperature is lower or higher than 15°C, the outdoor dry bulb temperature is lower or higher than 19°C, and the cooling water outlet temperature is lower than 26°C or higher than 28°C, correspondingly, the power consumption of the blower drive device Characterized in that controlling to lower or increase step by step
Cooling tower operation control system.
The method according to claim 6 or 8,
The driving control unit,
When the outside wet bulb temperature is 2°C or less, the outside dry bulb temperature is 4°C or less, and the cooling water outlet temperature is 23°C or less, controlling to bypass the cooling water to the collecting unit without supplying the cooling water to the filler side.
Cooling tower operation control system.
A cooling tower comprising the cooling tower operation control system according to claim 6.

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