AIR CONDITIONER AND METHOD OF CONTROLLING WATER INJECTION MODULE OF AIR CONDITIONER

Description

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims benefit of priority to Korean Patent Application No. 10-2024-0201770 filed on Dec. 31, 2024, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND

1. Field

The present disclosure relates to an air conditioner and a method of controlling a water injection module of an air conditioner.

2. Description of Related Art

A condenser may refer to a heat exchanger that may cool and liquefy a high-temperature, high-pressure refrigerant vapor supplied from a compressor, and may perform a function of releasing heat in a refrigeration cycle outwardly.

In particular, an evaporative condenser may operate by combining the actions of water cooling and air cooling, spraying water onto a tube through which a cooling fluid passes, flowing air supplied from a blower to a surface of the tube, and discharging water vapor evaporated from the surface of the tube to cool the cooling fluid.

Meanwhile, an evaporative cooler may operate by alternately forming a wet channel and a dry channel, and supplying cooled air indoors through the dry channel by heat exchange caused by evaporation in the wet channel. In detail, the evaporative cooler may operate by cooling a second air passing through the dry channel by using latent heat from evaporation of water injected into a first air passing through the wet channel.

Here, a water injection module for injecting water into an evaporative heat exchanger such as an evaporative condenser or an evaporative cooler may perform an operation of continuously spraying water during an operation of an air conditioner. Accordingly, under a partial load condition in which a cooling load is relatively small or a high-humidity condition in which an evaporative effect is reduced, the water injection module may excessively consume a water injection amount relative to a required water injection amount, which leads to a need for optimizing the water injection amount.

RELATED ART DOCUMENT

Patent Document

(Patent Document 1) Korean Laid-Open Patent Publication No. 10-2024-0022838

SUMMARY

An aspect of the present disclosure is to provide an air conditioner capable of determining a compressor rotational speed based on a condensation saturation temperature and calculating a control value according to the determined compressor rotational speed and an outdoor-air temperature, thereby reducing a water-injection consumption amount while securing an operation performance of a heat exchanger, and a method of controlling a water injection module of an air conditioner.

Tasks of the present disclosure are not limited to the above-described contents. Those skilled in the art to which the present disclosure pertains may understand additional tasks of the present disclosure from overall contents of the specification without difficulty.

According to an aspect of the present disclosure, provided is an air conditioner including: an evaporator, an expansion valve, a compressor, and an evaporative condenser, through which a refrigerant circulates; a water injection module for spraying water to the evaporative condenser; and a controller for controlling an operation of the water injection module, wherein the water injection module includes a supply line connected to a water supply source, having a water injection valve disposed in the supply line and opening and closing a flow path through which water is supplied from the water supply source, and supplying water to the evaporative condenser, and the controller is connected to the water injection valve, determines a rotational speed of the compressor based on a condensation saturation temperature of the evaporative condenser, and controls opening and closing operations of the water injection valve based on the determined rotational speed of the compressor and an outdoor-air temperature.

The controller may calculate a control value based on the determined rotational speed of the compressor and the outdoor-air temperature, and control the opening and closing operations of the water injection valve according to the calculated control value.

The controller may control the water injection valve in a first opening mode in which the water injection valve is maintained in an open state for a predetermined first water-injection time when a current speed of the compressor exceeds a predetermined reference speed and the calculated control value is equal to or greater than a predetermined first set value, may repeatedly perform the opening and closing operations of the water injection valve in a first opening/closing mode in which the water injection valve is maintained in an open state for the predetermined first water-injection time and then maintained in a closed state for a predetermined first water-injection stop time when the calculated control value is less than the first set value and is equal to or greater than a predetermined second set value less than the first set value, and may repeatedly perform the opening and closing operations of the water injection valve in a second opening/closing mode in which the water injection valve is maintained in an open state for a predetermined second water-injection time and then maintained in a closed state for a predetermined second water-injection stop time when the calculated control value is less than the second set value.

The controller may close the water injection valve when a current speed of the compressor is equal to a reference speed.

The second water-injection stop time may be set to be equal to or longer than the first water-injection stop time.

The controller may immediately apply changes during an ascending control in an order of the second opening/closing mode, the first opening/closing mode, and the first opening mode, and apply changes during a descending control in an order of the first opening mode, the first opening/closing mode, and the second opening/closing mode when a predetermined number of cycles is reached during a predetermined reference time.

The controller may immediately perform the first opening mode by applying changes thereto when the compressor corresponds to a predetermined protection condition during an operation of the compressor.

According to an aspect of the present disclosure, provided is a method of controlling a water injection module of an air conditioner, in which the method is performed on a computing device including a processor and a storage medium recording at least one program executable by the processor, the method including: a determining operation of determining a rotational speed of a compressor based on a condensation saturation temperature; a calculating operation of calculating a control value based on the determined rotational speed of the compressor and an outdoor-air temperature; a determining operation of determining a water-injection mode in which water is injected into a heat exchanger through a supply line of a water injection module according to the calculated control value; and an operating operation of performing a water-injection operation of the water injection module based on the water-injection mode determined in the determining operation.

The determining operation may include determining a first opening mode in which the water injection valve is maintained in an open state for a predetermined first water-injection time when a current speed of the compressor exceeds a predetermined reference speed and the calculated control value is equal to or greater than a predetermined first set value, determining a first opening/closing mode in which the water injection valve is maintained in an open state for the predetermined first water-injection time and then maintained in a closed state for a predetermined first water-injection stop time when the calculated control value is less than the first set value and is equal to or greater than a predetermined second set value less than the first set value, and determining a second opening/closing mode in which the water injection valve is maintained in an open state for a predetermined second water-injection time and then maintained in a closed state for a predetermined second water-injection stop time when the calculated control value is less than the second set value.

In the operating operation, the water-injection operation and water-injection stop operation of the water injection module may be repeatedly performed in the first or second opening/closing mode determined in the determining operation.

The method may further include: a repeating operation of repeatedly performing the determining operation and the operating operation when the compressor is in operation after the operating operation.

BRIEF DESCRIPTION OF DRAWINGS

The above and other aspects, features, and advantages of the present disclosure will be more clearly understood from the following detailed description, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is an exemplary view of an air conditioner according to an exemplary embodiment of the present disclosure;

FIG. 2 is an exemplary view illustrating a water injection module of the air conditioner according to an exemplary embodiment of the present disclosure;

FIG. 3 is a view illustrating opening and closing modes of a water injection valve included in the water injection module of the air conditioner according to an exemplary embodiment of the present disclosure;

FIG. 4 is a flowchart illustrating a method of controlling a water injection module of an air conditioner according to an exemplary embodiment of the present disclosure;

FIG. 5 is a table showing an implementation example of the method of controlling a water injection module of an air conditioner according to an exemplary embodiment of the present disclosure; and

FIG. 6 is a block diagram of a computing device according to an exemplary embodiment of the present disclosure, in which the air conditioner and the method of controlling a water-injection module of the air conditioner are entirely or partially implemented.

DETAILED DESCRIPTION

Hereinafter, embodiments of the present disclosure are described with reference to the accompanying drawings. However, the embodiments of the present disclosure may be modified into various other forms, and a scope of the present disclosure is not limited to the embodiments described below.

In addition, the embodiments of the present disclosure are provided to more completely describe the present disclosure to those skilled in the art.

Shapes, sizes, and the like of elements in the drawings may be exaggerated for a clearer description.

In describing the embodiments of the present disclosure, a detailed description may be omitted when the detailed description of known art related to the present disclosure is determined to unnecessarily obscure a gist of the present disclosure. In addition, terms described below correspond to terms defined in consideration of functions in the present disclosure and may vary depending on intentions, practices, or the like of a user or an operator. Therefore, the terms should be defined based on entire contents of the specification. Terms used in the detailed description are provided merely to describe the embodiments of the present disclosure and are not intended to limit the present disclosure. A term of a singular number includes its plural number unless clearly used otherwise.

In this description, expressions such as “include” and “comprise” indicate specific features, numbers, operations, operations, elements, portions thereof, or combinations thereof, and should not be interpreted to preclude the presence or possibility of one or more other features, numbers, operations, operations, elements, portions thereof, or combinations thereof other than those described.

Unless otherwise specified in the specification of the present disclosure, a percentage unit (%) may indicate weight percent (w %).

In the specification, terms such as “upper,” “upper portion,” “upper surface,” “lower,” “lower portion,” “lower surface” and “side surface” are indicated based on the drawings and may vary depending on directions in which devices or components are disposed.

In addition, throughout the specification, when one component is described as being “connected” to another component, it indicates not only a case where these components are “directly connected” to each other, but also a case where these components are “indirectly connected” to each other while having another component interposed therebetween.

Hereinafter, the present disclosure is described in detail through each implementation example or exemplary embodiment of the present disclosure. It should be noted that each implementation example or exemplary embodiment described in the specification is not limited to describing only one embodiment or exemplary embodiment and may also be combined with another exemplary embodiment or exemplary embodiment. Therefore, citation according to claims in the patent claims corresponds merely to one of the implementation example. The spirit of the present disclosure should not be interpreted as being defined only by a combination with the cited claims, and may also include combinations with various claims.

FIG. 1 is an exemplary view of an air conditioner according to an exemplary embodiment of the present disclosure; and FIG. 2 is an exemplary view illustrating a water injection module of the air conditioner according to an exemplary embodiment of the present disclosure.

Referring to FIGS. 1 and 2, an air conditioner 100 according to an exemplary embodiment of the present disclosure may include evaporative condenser 110 for condensing a compressed refrigerant, an expansion valve 120 for expanding a refrigerant passing through the evaporative condenser 110, an evaporator 130 for evaporating the refrigerant passing through the expansion valve 120, and a compressor 140 for compressing the refrigerant passing through the evaporator 130. The refrigerant may form a refrigerant cycle R1 by passing through the evaporative condenser 110, the expansion valve 120, the evaporator 130, and the compressor 140. In the refrigerant cycle R1, the compressor 140, the evaporative condenser 110, and the expansion valve 120 may be disposed in an outdoor unit, and the evaporator 130 may be disposed in an indoor unit 150.

Here, the evaporative condenser 110 may include a condensing module 111 including a flow path, a water injection module 200 disposed above the condensing module 111 and spraying water passing through the condensing module 111, and a blowing module 113 disposed at one side of the condensing module 111 and providing air passing through the condensing module 111. The evaporative condenser 110 may be installed in an outdoor unit (not shown) disposed outdoors spatially separated from indoors. The condensing module 111 may have an air flow path A1 through which air is drawn from outside by the blowing module 113, passes through the condensing module 111, and is discharged after its temperature increases, a water supply path W1 which is connected to a water supply source WS and through which water sprayed to the condensing module 111 by the water injection module 200 is drained from a lower portion of the condensing module 111, and the refrigerant cycle R1 passing therethrough. The refrigerant may be condensed by air in the air flow path A1 and water in the water supply path W1. Meanwhile, the evaporator 130 through which the refrigerant cycle R1 passes may be disposed in the indoor unit 150, and the indoor unit 150 may include a blower 151. Indoor air may pass through the evaporator 130 by the blower 151 and may then form an indoor circulation path A10 that supplies air back indoors.

Here, the condensing module 111 may enable the refrigerant to exchange heat with water and air by passing through a three-directional spatial structure formed in a header extension direction, a connection tube extension direction, and a header row stacking direction to thus achieve greater heat exchange even when occupying the same volume, thereby improving cooling efficiency. Meanwhile, the condensing module 111 may adopt a condenser structure using evaporation of water even if the condensing module 111 does not include the above-described structure.

Meanwhile, the air conditioner 100 according to an exemplary embodiment of the present disclosure may include an evaporative cooler if necessary. The evaporative cooler may be disposed in the outdoor unit, may be disposed on an inlet flow path through which outdoor air is introduced, may include a dry channel and a wet channel, and may cool air passing through the dry channel. The evaporative cooler may include the dry channel through which air to be cooled passes and the wet channel adjacent to the dry channel, and the wet channel may exchange heat with the dry channel by evaporation of water sprayed by a water injection module for the cooler. Typically, the evaporative cooler may have the dry channel and the wet channel alternately disposed, and the water injection module for the cooler may be disposed above the wet channel and provide water to the wet channel, and a blowing module (not shown) for the cooler may be disposed above or below the wet channel to cause the flow. Here, the water injection module for the cooler for providing water to the wet channel of the evaporative cooler may include the same configuration as the water injection module 200 for providing water to the evaporative condenser 110. Hereinafter, the water injection module 200 for providing water to the evaporative condenser 110 is described merely as an example, and may also be applicable to the water injection module for the cooler included in the evaporative cooler.

Referring to FIGS. 1 and 2, the water injection module 200 for spraying water to the evaporative condenser 110 of the air conditioner 100 according to an exemplary embodiment of the present disclosure may include a supply line 210 connected to the water supply source WS and supplying water to the evaporative condenser 110. The supply line 210 may have a water injection valve 220 disposed in the supply line 210 and opening and closing a flow path through which water is supplied from the water supply source WS, and also have a pressure-reducing valve 230 disposed in the supply line 210. For example, the water injection valve 220 may correspond to a normally open valve. Here, the normally open valve may particularly refer to a valve capable of being actively closed, and may be automatically opened or maintained in an open state while no current is supplied to the valve. However, the water injection valve may not be limited thereto, and may be implemented as any valve as long as the water injection valve may be opened and closed by a controller C described below. The water injection valve may correspond to a flow-adjusting valve, and may also correspond to a valve that operates only in a fully open state and a fully closed state.

In addition, various components may be disposed in the supply line 210 if necessary. For example, a filter for filtering water flowing inside the supply line 210 may be disposed in the supply line 210. The filter may have various forms. For example, the filter may be implemented as a resin filter in which a large number of resin beads each having a bead shape are provided and flow according to a flow velocity. The filter may perform a function of removing trace amounts of dissolved inorganic ions and organic matters included in water flowing inside the supply line. However, the filter is not limited thereto and may correspond to any one of a pretreatment filter, a pre-carbon filter, and a Moringa filter. The Moringa filter may include a first Moringa filter including Moringa seed powders and sand or anthracite and a second Moringa filter including Moringa seed powders and activated carbon.

The water injection module 200 may include a discharge unit 240 connected to one end of the supply line 210, that is, an outlet end thereof. The discharge unit 240 may include a discharge line 241 connected to one end of the supply line 210 and a water injection nozzle 242 disposed in the discharge line 241 and spraying water to the evaporative condenser 110. Here, the water injection nozzle 242 may be implemented as a micro-spray nozzle that generates water supplied through the discharge line 241 into sprayed water and sprays the sprayed water to the evaporative condenser 110. The discharge unit 240 may include one or more discharge lines 241 in which the water injection nozzle 242 is disposed, if necessary. When the discharge unit 240 may include a plurality of discharge lines 241, the plurality of discharge lines 241 may branch in parallel from one end of the supply line 210, and water may be entirely sprayed to the evaporative condenser 110 through the water injection nozzles 242 disposed in the plurality of discharge lines 241.

For example, as illustrated in FIG. 2, the discharge unit 240 may include a first discharge line 241a and a second discharge line 241b that branch from one end of the supply line 210, a plurality of first water injection nozzles 242a disposed in the first discharge line 241a, and a plurality of second water injection nozzles 242b disposed in the second discharge line 241b. The first water injection nozzle 242a may spray water to one portion of a heat exchange part (the above-described condensing module 111, see FIG. 1) of the evaporative condenser 110. The second water injection nozzle 242b may spray water to another portion of the heat exchange part (the above-described condensing module 111, see FIG. 1) of the evaporative condenser 110. However, the present disclosure is not limited thereto, and the discharge line may be disposed as one line or three or more lines connected in parallel depending on a form or size of the evaporative condenser, or necessity.

The air conditioner 100 according to an exemplary embodiment of the present disclosure may include the controller C for controlling an operation of the water injection module 200. The controller C may be connected to the water injection valve 220 disposed in the supply line 210, may set a target rotational speed TAR_rps of the compressor 140 based on a condensation saturation temperature, and may calculate a control value based on the target rotational speed TAR_rps of the compressor 140 and an outdoor-air temperature T_a, and may control opening and closing operations of the water injection valve 220 in a water-injection mode according to the calculated control value.

FIG. 3 is a view illustrating opening and closing modes of a water injection valve included in the water injection module of the air conditioner according to an exemplary embodiment of the present disclosure.

As illustrated in FIG. 3, the controller C may output a water-injection-valve operation signal V_sol for opening or closing the water injection valve 220, may maintain a turned-on state or may repeat turning on and off during an operation of the compressor 140, may turn off the water injection valve after a predetermined time when the operation of the compressor 140 stops, and may maintain the turned-off state after turned-on/turned-off repetition during a drying operation.

FIG. 4 is a flowchart illustrating a method of controlling a water injection module of an air conditioner according to an exemplary embodiment of the present disclosure; and FIG. 5 is a table showing an implementation example of the method of controlling a water injection module of an air conditioner according to an exemplary embodiment of the present disclosure.

Referring to FIGS. 1, 2, 4, and 5, first, the compressor 140 may be preheated by being operated at a predetermined start-up speed for a predetermined time (S1), and the controller C may then determine the target rotational speed of the compressor 140 based on a condensation saturation temperature SDT (S2). The condensation saturation temperature may be determined based on a condenser outlet temperature, a high-pressure sensor value, a resulting refrigerant concentration, and the like.

The controller C may calculate the control value based on the determined target rotational speed of the compressor and the outdoor-air temperature (S3).

The control value may be calculated using the following equation:

(Equation)

Gain_sol=0.72×TAR_rps+1.43×T_a−5.9

Here, “Gain_sol” indicates the control value, “TAR_rps” indicates the target rotational speed of the compressor 140, and “T_a” indicates the outdoor-air temperature.

The controller C may determine the water-injection mode in which water is injected into the heat exchanger through the supply line of the water injection module according to the calculated control value (S4), and may control a water-injection operation of the water-injection module based on the determined water-injection mode (S5)

In more detail, the controller C may determine a first opening mode in which the water injection valve is maintained in an open state for a predetermined first water-injection time (S5a) when the calculated control value is equal to or greater than a predetermined first set value (S4a), may determine a first opening/closing mode in which the water injection valve is maintained in an open state for the predetermined first water-injection time and then maintained in a closed state for a predetermined first water-injection stop time (S5b) when the calculated control value is less than the first set value and is equal to or greater than a predetermined second set value less than the first set value (S4b), and may determine a second opening/closing mode in which the water injection valve is maintained in an open state for a predetermined second water-injection time and then maintained in a closed state for a predetermined second water-injection stop time (S5c) when the calculated control value is less than the second set value (S4c). For example, the first set value may be set to 73 and the second set value may be set to 47, and the present disclosure is not limited thereto.

In addition, referring to FIG. 5, the controller C may perform the above-described control operations when a current speed CUR_rps of the compressor exceeds a predetermined reference speed, and may stop water-injection operation when the current speed CUR_rps of the compressor is equal to the reference speed. For example, the reference speed may be “0.”

That is, if the current speed CUR_rps of the compressor exceeds the reference speed, the controller C may determine the first opening mode when the calculated control value is equal to or greater than the first set value, may determine the first opening/closing mode when the calculated control value is less than the first set value and is equal to or greater than the second set value, and the may determine the second opening/closing mode when the calculated control value is less than the second set value.

The controller C may immediately apply changes during an ascending control in the order of the second opening/closing mode, the first opening/closing mode, and the first opening mode, and may apply changes during a descending control in the order of the first opening mode, the first opening/closing mode, and the second opening/closing mode after a predetermined reference time elapses, for example, after 5 minutes. (In addition, the controller C may also apply changes when a predetermined number of cycles is reached during the reference time). In more detail, an amount of sprayed water injection increases in the order of the second opening/closing mode, the first opening/closing mode, and the first opening mode, which may be favorable because the load on the outdoor unit decreases. Conversely, the amount of sprayed water injection decreases in the order of the first opening mode, the first opening/closing mode, and the second opening/closing mode, which may be unfavorable because the load on the outdoor unit increases. That is, the less the amount of sprayed water injection, the higher the discharge pressure of the compressor 140 and the greater the power consumption. Therefore, during the descending control in the order of the first opening mode, the first opening/closing mode, and the second opening/closing mode, applying changes after the reference time elapses may be advantageous for load management and power consumption management. Conversely, the greater the amount of sprayed water injection, the lower the discharge pressure of the compressor 140 and the lower the power consumption. Therefore, during the ascending control in the order of the second opening/closing mode, the first opening/closing mode, and the first opening mode, immediately applying changes may be advantageous for load management and power consumption management.

Meanwhile, the controller C may immediately perform the first opening mode by applying changes thereto when the compressor 140 corresponds to a predetermined protection condition during an operation of the compressor 140. For example, the protection condition may correspond to a pressure-discharge (PD) protection (compressor discharge-pressure protection operation (Pressure Discharge)), a temperature-discharge (TD) protection (compressor discharge-temperature protection operation (Temperature Discharge)), or a current (CUR) protection (compressor current (input/output) protection operation (Current)), and the controller C may immediately apply the changes for safety or the like. In addition, the controller C may also apply the changes to the first opening mode even when performing determination according to the control value at an initial stage of the operation.

In the operating operation (S5), the water-injection operation and water-injection stop operation of the water injection module 220 may be repeatedly performed in the first or second opening/closing mode determined in the determining operation (S4). The water-injection stop time of the second opening/closing mode may be equal to or longer than the water-injection stop time of the first opening/closing mode. For example, the water-injection stop time of the first opening/closing mode may be set to two minutes (V_sol 2 min), and the water-injection stop time of the second opening/closing mode may be set to four minutes (V_sol 4 min). The water-injection time of the first opening/closing mode and the water-injection time of the second opening/closing mode may be equal to each other. For example, the water-injection time of the first opening/closing mode and the water-injection time of the second opening/closing mode may each be five minutes (5 min).

Referring back to FIG. 4, the controller C may calculate the control value (S3) and may repeatedly perform the determining operation (S4) and the operating operation (S5) described above when the compressor 140 is in operation after the operating operation (S5) (S6). When the compressor 140 stops the operation, the controller C may terminate the process (S7).

Meanwhile, the controller C may control the water injection valve to perform a predetermined initial operation when the water injection valve is opened after being closed. The initial operation may correspond to an operation of operating the water injection valve for a predetermined time to check whether a normal operation is achieved. In addition, when the target speed TAR_rps of the compressor is changed to exceed a predetermined value, or when a change or return from a non-water-injection operation to the water-injection operation occurs, the controller C may determine the initial operation of the water-injection operation, and may perform the initial operation.

FIG. 6 is a block diagram of a computing device in which the air conditioner and the method of controlling a water injection module of an air conditioner according to the exemplary embodiments of the present disclosure are entirely or partially implemented.

As illustrated in FIG. 6, a computing device 400 may include at least one processor 401, a computer-readable storage medium 402, and a communication bus 403. For example, the computing device 400 may include a personal computer, a server computer, a handheld or laptop device, a mobile device (e.g., a mobile phone, a personal digital assistant (PDA), or a media player), a multiprocessor system, a consumer electronic device, a mini-computer, a mainframe computer, a distributed computing environment that includes any of the above-described systems or devices, or the like, and is not limited thereto.

The processor 401 may enable the computing device 400 to operate according to the exemplary embodiment described above. For example, the processor 401 may execute at least one program stored in the computer-readable storage medium 402. At least one program may include at least one computer-executable instruction, and when executed by the processor 401, the computer-executable instruction may enable the computing device 400 to perform operations according to the exemplary embodiment. For example, the processor 401 may include a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like, and may have a plurality of cores. The memory 1120 may be a volatile memory (e.g., a random access memory (RAM)) or a non-volatile memory (e.g., a read-only memory (ROM) or a flash memory), or a combination thereof.

The computer-readable storage medium 402 may store computer-executable instructions or program codes, program data, and/or other suitable forms of information. A program 402a stored in the computer-readable storage medium 402 may include a set of instructions executable by the processor 401. In an exemplary embodiment, the computer-readable storage medium 402 may correspond to a memory (e.g., a volatile memory such as a random-access memory or a non-volatile memory, or a suitable combination thereof), at least one magnetic disk storage device, an optical disk storage device, a flash memory device, another type of storage medium that may be accessed by the computing device 400 and may store desired information, or a suitable combination thereof.

The communication bus 403 may interconnect various other components of the computing device 400, including the processor 401 and the computer-readable storage medium 402.

The computing device 400 may also include at least one input/output interface 405 that provides an interface for at least one input/output device 404, and at least one network communication interface 406. The input/output interface 405 and the network communication interface 406 may be connected to the communication bus 403. The input/output device 404 may be connected to other components of the computing device 400 through the input/output interface 405. Examples of the input/output devices 404 may include input devices such as a pointing device (a mouse or a trackpad), a keyboard, a touch input device (a touchpad or a touchscreen), a voice or sound input device, various types of sensor devices and/or imaging devices, and/or output devices such as a display device, a printer, a speaker, and/or a network card. An example of the input/output device 404 may be disposed inside the computing device 400 as an internal component of the computing device 400, or may be implemented as a separate device distinguished from the computing device 400 and connected to the computing device 400.

Meanwhile, the exemplary embodiment of the present disclosure may include a program for performing, on a computer, the methods described in the specification, and a computer-readable recording medium including the program. The computer-readable recording medium may include program instructions, local data files, local data structures, or the like, either alone or in combination. The medium may be specially designed and configured for the present disclosure or may be a medium commonly usable in a computer software field. An example of the computer-readable recording medium may include a magnetic medium such as a hard disk, a floppy disk, or a magnetic tape, an optical recording medium such as a compact disk read only memory (CD-ROM) or a digital versatile disk (DVD), or a hardware device specifically configured to store and execute a program instruction such as a read only memory (ROM), a random access memory (RAM), or a flash memory. Examples of the program may include not only machine language code generated by a compiler but also high-level language code executable by a computer using an interpreter.

Components such as the “controller” used in the specification generally refer to computer-related entities such as hardware, a combination of hardware and software, software, or software being executed. For example, components such as the “controller” may refer to a process executing on a processor, the processor itself, an object, an executable, a thread of execution, a program, and/or a computer, and are not limited thereto. For example, both an application executed on the controller and the controller itself may be included in the components. At least one component may be present within a process and/or a thread of execution, and the components may be localized on one computer or distributed across two or more computers.

As described above, according to the present disclosure, the rotational speed of the compressor may be set based on the saturation temperature of the condenser, and water injection may be controlled based on the set rotational speed of the compressor and the outdoor-air temperature, thereby reducing the power consumption of the compressor and the water consumption of the condenser.

According to the exemplary embodiments of the present disclosure, the rotational speed of the compressor may be set based on the saturation temperature of the condenser, and water injection may be controlled based on the set rotational speed of the compressor and the outdoor-air temperature, thereby reducing the power consumption of the compressor and the water consumption of the condenser.

While the exemplary embodiments have been shown and described above, it will be apparent to those skilled in the art that modifications and variations could be made without departing from the scope of the present disclosure as defined by the appended claims.