KR20130117188A - Method for managing energy using vav way and apparatus thereof - Google Patents

Abstract

PURPOSE: A method for managing energy using a variable air volume system and an energy management device therefor are provided to save the energy consumed in a building by remotely monitoring an air conditioning facility, analyzing the data related to the collected ventilation data, controlling an optimal ventilating temperature to fit the cooling/heating load, and reducing the ventilating amount. CONSTITUTION: A method for managing energy using a variable air volume system comprises a communication module, a storage module, and a control module. The communication module communicates with one or more equipment control devices controlling air conditioning equipment and receives operational information relative to the air conditioning equipment. The storage module stores the operational information relative to the air conditioning equipment. The control module sets an effective period of the ventilating temperature control by analyzing tendencies relative to a ventilating temperature of the air conditioning equipment and the cooling/heating load. The operational information monitored by the communication module is compared to detect whether or not the ventilating temperature control of the air conditioning equipment is applied. When the ventilating temperature control is required, a control value relative to the ventilating temperature is calculated. The request to control the air conditioning equipment based on the control value is performed. [Reference numerals] (12) Variable air volume device; (AA) Outside air; (BB) Exhaust; (CC) Ventilation; (DD) Air blower; (EE) Static pressure sensor; (FF,HH) Air volume detector; (GG,II,JJ) Thermometer

Description

Energy management method using variable wind volume method and energy management apparatus for the same {Method for managing energy using VAV way and apparatus

The present invention relates to a method and apparatus for energy management service of a building, and more particularly, to control energy consumption according to an air-conditioning load through analysis of operation information on an air conditioning facility, and to conserve energy by reducing the amount of air flow. It relates to an energy management method using a variable wind volume method and an energy management apparatus for the same.

In Korea, which is highly dependent on the supply and demand of energy resources, imports of imported energy have not decreased, but are still increasing, even at the time of ultra high oil prices exceeding $ 100 per barrel. In light of these circumstances, technology development and application of energy saving in the building sector is considered as a very important field. In other words, as the industry develops, the number of buildings is increasing, and each building uses a lot of energy for air conditioning and operation of facilities. Energy consumption in buildings accounts for about 20% of total domestic consumption, and is increasing every year.

In particular, the efficient use of energy in buildings is an important factor that directly affects the landlord's economic aspects and the national infrastructure industry, and technology development and investment are urgently required.

Unreasonable energy use is also associated with inefficient operation and management of the facilities in the building. For example, the results show that about 20% of summer's electricity demand is the share of heating and cooling loads among the total loads in the building, indicating that heating and cooling loads have a significant impact on peak power and power reserves.

Such energy saving methods in buildings include architectural planning approaches and facility approaches that improve the operating efficiency of energy-using devices and systems. The facility sector approach requires the creation of a suitable environment and the operation of an efficient facility system that takes into account energy consumption and environmental conservation.

And, as a building owner, the energy consumption of a building is directly linked to the financial expenditure, so inefficient building energy consumption places a significant financial burden on the building owner. In order to solve these problems, improvement measures are required to efficiently and systematically manage the use of energy consumed in buildings.

An object of the present invention is to remotely monitor the air conditioning facilities, analyze the collected air conditioning related data, and based on this, by adjusting the optimal blowing temperature in accordance with the heating and cooling load to reduce the air volume, it is possible to save the energy consumed in the building An energy management method using a variable wind volume method and an energy management apparatus for the same.

Energy management device using a variable air volume method according to an embodiment of the present invention for achieving the above object is in communication with at least one facility control device for controlling the air conditioning equipment, communication for receiving the operation information for the air conditioning equipment By analyzing trends of blowing temperature and cooling / heating load of air conditioner and storage module that stores operation information about module and air conditioning equipment, set application period of blower temperature control of blower, and monitor operation information monitored through communication module. Comparing whether or not the blower temperature control of the blower is applied, if the control of the blowing temperature is necessary, calculates the control value for the blowing temperature, and includes a control module requesting that the air conditioning equipment is controlled based on the control value It features.

In addition, in the energy management apparatus using the variable air volume method according to the present invention, the control module periodically monitors the operation information, and confirms the energy efficiency for applying the blower temperature control of the blower based on the analysis result of the monitored operation information. Characterized in that.

In addition, in the energy management apparatus using the variable air volume method according to the present invention, the operation information is at least one of the air supply air volume of the air conditioning equipment, the room temperature during heating and cooling, the opening of the cooling coil valve, the opening of the heating coil valve and the damper opening of the variable air flow device Characterized in that it comprises a.

In addition, in the energy management apparatus using the variable air volume method according to the present invention, the control module is based on the operation information collected after the application of the variable wind volume method that can reduce the power of the blower, by continuously monitoring the power state of the blower energy It is characterized by checking the efficiency according to the calories.

In addition, in the energy management apparatus using the variable air volume method according to the present invention, the control module derives the first control value through simulation for controlling the blowing temperature of the blower, and compares the basic data for each period accumulated and the historical statistical data. The second control value is set by correcting the first control value for the blower temperature control of the blower, and the final control value of the blower temperature from the second control value according to the monitoring information obtained through real-time monitoring of the air conditioning equipment on a specific day. It is characterized in that to set, and to control the air conditioning equipment to the final control value.

In the energy management method using the variable air volume method according to an embodiment of the present invention, the energy management apparatus analyzes the trend of the blowing temperature and the heating / cooling load of the air conditioning equipment to set the application period of the blowing temperature control of the blower, and the energy management Comparing the operation information monitored by the device to determine whether the blower temperature control of the blower is applied, if the energy management device needs to control the blowing temperature, calculating the control value for the blowing temperature and the energy management device And requesting that the air conditioning system be controlled based on the control value.

In addition, in the energy management method using a variable air volume method according to the present invention, the setting step is the step of the energy management device requesting the operation information when heating and cooling the facility control device and the energy management device receives the data corresponding to the request and It further comprises the step of storing it.

In addition, in the energy management method using the variable air volume method according to the present invention, the setting step is the step of the energy management device to analyze the annual load rate and operating time of the air conditioning equipment, the energy management device when the heating and heating load rate and Checking the operating time and the energy management device characterized in that it comprises the step of selecting a period for the load rate and the operating time matching the predetermined criteria.

In addition, in the energy management method using a variable air volume method according to the present invention, the step of calculating the energy management device to check the opening state of the valve of the cooling coil and heating coil of the air conditioning equipment, and the energy management device is confirmed Determining whether or not the temperature of the cold and hot air can be lowered by adding the flow rate of cold water and hot water based on the result, and the energy management device according to the determination result, the degree of air flow control of the variable air flow device, the change of the air flow amount according to the change of the cold and hot air flow And determining the control value of the blowing temperature at the time of heating and cooling based on the confirmed data and the confirmed energy management device.

In addition, in the energy management method using a variable air flow method according to the present invention, the step of the energy management device requesting the monitoring of the operation information to the facility control device and the energy management device is monitored by the year, quarter, The method may further include classifying and storing at least one of monthly, weekly, daily, and day of the week.

In addition, in the energy management method using the variable air volume method according to the present invention, the energy management device derives the first control value through the simulation for controlling the blowing temperature of the blower, and accumulates the basic data for each period and the historical statistical data accumulated. Comparing and setting the second control value by correcting the first control value for the blowing temperature control of the blower, and the second control value according to the monitoring information obtained by the energy management device through real-time monitoring of the air conditioning facility on a specific day. From the step of setting the final control value of the blowing temperature and the energy management device further comprises the step of performing the control of the air conditioning equipment to the final control value.

According to the present invention, the network-based building energy management system can be configured to minimize the building cost in the building, and can be built in stages by functionalization and modularization.

In addition, it provides real-time or period-based data analysis service through integrated platform to maximize energy saving effect through systematic integrated management of multiple buildings, and analyzes web-based real-time or period-based energy consumption pattern to continuously check building energy management status. And energy feedback activities through feedback.

In addition, by adjusting the blowing temperature in accordance with the heating and cooling load of the building to reduce the amount of blowing, it reduces the energy use for the blowing power.

In addition, the energy management system of the central management method can be applied during the cooling light load period, such as the mid-term or early winter when the heating and cooling load occurs, and can be applied in buildings with a large indoor heating load even during heating.

1 is a view showing the configuration of the air conditioning equipment of a building according to an embodiment of the present invention.
2 is a view showing the configuration of an energy management system using a variable air volume method according to an embodiment of the present invention.
3 is a block diagram illustrating a configuration of a facility control apparatus according to an exemplary embodiment of the present invention.
4 is a block diagram illustrating a configuration of an energy management apparatus according to an exemplary embodiment of the present invention.
5 is a diagram illustrating a data flow for explaining an energy management method using a variable air volume method according to an exemplary embodiment of the present invention.
6 is a flowchart illustrating an operation of an energy management apparatus according to an embodiment of the present invention.
7 is a flowchart illustrating a process of monitoring the main item by the energy management device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted. It should be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

The terms or words used in the specification and claims described below should not be construed as being limited to ordinary or dictionary meanings, and the inventors are appropriate as concepts of terms for explaining their own invention in the best way. It should be interpreted as meanings and concepts in accordance with the technical spirit of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a view showing the configuration of the air conditioning equipment of a building according to an embodiment of the present invention.

Referring to FIG. 1, an air conditioning system 10 according to the present invention is an equipment for artificially adjusting an air condition (for example, temperature, humidity, air flow, and cleanliness) of a room or a constant space to a state suitable for a purpose of use. Basically, a cooling coil (11a) for cooling and dehumidifying air by using cold water cooled in a heat source facility during cooling, and a heating coil for heating air using hot water heated in a heat source facility during heating. A coil (Heating Coil, 11b), a blower (Supply Fan) for supplying heated or cooled air to the room and a variable air flow rate device 12 for adjusting the air flow rate for the cold and hot air supplied from the blower to the room.

In addition, the air conditioning system 10 includes a duct facility for delivering the air cooled or heated to the room, and circulating the polluted air in the room. In addition, the cooling coil is mixed with fresh air that is recirculated in the room. (11a) or a mixing chamber for transferring to the heating coil (11b), a filter for removing impurities such as dust mixed in the air, a humidifying nozzle for spraying water or steam for humidification during heating may be further included. .

The air conditioner 10 supplies the indoors after cooling or heating by mixing the air introduced from the outside with the recirculated ventilation in the room. Some of the air polluted in the room is discharged to the outside and some are recycled to the air conditioner. .

For reference, in order to help the understanding of the following description, the terminology is summarized as 'outside air' from the outside, 'air supply' to the air supplied from the air conditioner to the 'air', and the air circulated from the air conditioner to the 'ventilator'. ', The air discharged from the room to the outside is defined as' exhaust'.

Accordingly, the present invention is intended to save energy by adjusting the blowing temperature in accordance with the heating and cooling load through the analysis of the operation information for the air conditioning equipment 10, and thereby reducing the amount of blowing.

2 is a view showing the configuration of an energy management system using a variable air volume method according to an embodiment of the present invention.

Referring to FIG. 2, the building energy management system 100 using a variable air volume (VAV) according to an embodiment of the present invention includes an air conditioning system 10, a facility control device 20, and an energy management device ( 30) and the communication network 40.

Building energy management system 100 according to an embodiment of the present invention is a building management system that is introduced to increase the energy performance while maintaining a comfortable indoor environment in the building. This system monitors the operation status of the facility system in the building and automatically controls it, and analyzes energy consumption and analyzes environment variables according to time zones and reduces the energy consumption of the building. In particular, the building energy management system 100 is a building management system for optimizing the indoor environment and energy performance, collects the operating state and the energy consumption of equipment or systems, evaluates them appropriately, and establishes optimal automatic control and is inefficient. It is a system that ultimately saves energy by analyzing operating equipment and analyzing energy consumption.

The communication network 40 of the building energy management system 100 according to an embodiment of the present invention performs a series of data transmission and reception operations for data transmission and information exchange between the facility control apparatus 20 and the energy management apparatus 30. . In this case, the facility control apparatus 20 may be connected to the communication network 40, and may be connected to the energy management device 30 through the communication network 40. In addition, the facility control apparatus 20 may be connected to the communication network 40 in various ways according to a protocol supporting the connection. For example, the facility control apparatus 20 may connect to the communication network 40 through a fixed access method such as a digital subscriber line (DSL), a cable modem, or an Ethernet. In addition, the facility control apparatus 20 may connect to the communication network 40 through a mobile access method. In addition, the facility control apparatus 20 may access the communication network 40 through a wireless access method such as a wireless local area network (WLAN), wireless fidelity (Wi-Fi), worldwide interoperability for microwave access (WiMAX), or the like. Can be.

The facility control device 20 controls the overall function of the heat source facility and the air conditioning facility of the building. In particular, the facility control device 20 communicates with the energy management device 30 through the communication network 40 for energy management of the building. Here, the facility control device 20 obtains the operation information of the air conditioning facility 10 during the heating and cooling of the building according to the request of the energy management device 30 and transmits it to the energy management device 30. Here, the operation information includes the air supply air volume of the air conditioning system 10, the room temperature during heating and cooling, the valve opening degree of the cooling coil (11a), the valve opening degree of the heating coil (11b), the damper opening degree of the variable air volume device 12, and the like. . When the facility control device 20 requests control of the variable air volume device 12 of the building from the energy management device 30, the facility control device 20 controls the variable air volume device 120 to apply the variable air volume method. Thereafter, the facility control apparatus 20 monitors the operation information to provide an air blowing amount according to the optimum blowing temperature, and transmits the monitored operation information to the energy management apparatus 30.

The energy management device 30 checks energy efficiency of a plurality of buildings and manages energy. At this time, the energy management device 30 communicates with the facility control device 20 located in each building through the communication network 40. In particular, the energy management device 30 collects the operation information for the air conditioning facility 10 from the facility control device 20 to reduce the air volume by adjusting the indoor blowing temperature of the building. Then, the energy management device 30 analyzes the collected data in association with the building air conditioning operation trend and equipment performance. That is, the energy management device 30 derives the first control value through a simulation for controlling the blowing temperature of the blower. In addition, the energy management device 30 sets the application period of the blower temperature control of the blower by analyzing the trend of the blowing temperature and the heating and cooling load of the air conditioning equipment (10).

The energy management device 30 checks the energy saving state on the basis of the operation information monitored after the application of the variable wind volume method capable of saving energy. Here, the energy management device 30 compares the monitoring operation information to determine whether the blower temperature control of the blower is applied, if the control of the blowing temperature is necessary, calculates the control value for the blowing temperature, based on the control value Request to the facility control device 20 to control the air conditioning facility (10). That is, the energy management apparatus 30 sets the second control value by comparing the basic data for each period accumulated with the past statistical data and correcting the first control value for the blowing temperature control of the blower. Then, the energy management device 30 sets the final control value of the blowing temperature from the second control value according to the monitoring information and the site situation obtained through real-time monitoring of the air conditioning equipment on a specific day, and the air conditioning equipment 10 as the final control value. ) Control. Subsequently, the energy management device 30 monitors changes in blower power consumption, blowing temperature, etc. after the change to the set control value. In addition, the energy management device 30 analyzes the efficiency before and after the change to the total energy consumption in the air conditioning facility 10 after the change to the blowing temperature set value.

The energy management device 30 monitors the power state of the blower based on the driving information collected after the application of the variable wind volume method capable of reducing the power of the blower. At this time, the energy management device 30 classifies and stores the operation information monitored by the facility control device 20 by year, quarter, month, week, daily, day of the week, and the like.

Through this, the network-based building energy management system can be configured to minimize the building cost in the building, and it is possible to build in stages by segmentation and modularization by function. In addition, it provides real-time or period-based data analysis service through integrated platform to maximize energy saving effect through systematic integrated management of multiple buildings, and analyzes web-based real-time or period-based energy consumption pattern to continuously check building energy management status. And energy feedback activities through feedback. In addition, by adjusting the blowing temperature in accordance with the heating and cooling load of the building to reduce the amount of blowing, it reduces the energy use for the blowing power. In addition, the energy management system of the central management method can be applied during the cooling light load period, such as the mid-term or early winter when the heating and cooling load occurs, and can be applied in buildings with a large indoor heating load even during heating.

3 is a block diagram illustrating a configuration of a facility control apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the facility control apparatus 20 according to the embodiment of the present invention includes a control unit 21, a storage unit 22, and a communication unit 23.

The facility control apparatus 20 according to the embodiment of the present invention is a terminal connected to the communication network 40 to transmit and receive data for energy management of the energy management device 30 and the building, and may include a mobile communication terminal. However, the facility control apparatus 20 is not limited to a mobile communication terminal, but may be applied to various terminals such as all information communication devices, multimedia terminals, wired terminals, fixed terminals, and IP (Internet Protocol) terminals. In addition, the facility control apparatus 20 includes a mobile phone, a portable multimedia player (PMP), a mobile internet device (MID), a smart phone, a desktop, a tablet computer, a notebook, It may be advantageously used when a mobile terminal having various mobile communication specifications such as a net book and an information communication device.

The communication unit 23 performs a function for transmitting and receiving data through the energy management device 30 and the communication network 40. Here, the communication unit 23 includes RF transmitting means for upconverting and amplifying the frequency of the transmitted signal, and RF receiving means for low noise amplifying and downconverting the received signal, and the like. The communication unit 23 may include at least one of a wireless communication module (not shown) and a wired communication module (not shown). The wireless communication module includes a wireless communication module, a wireless local area network (WLAN), a wireless fidelity (WiFi), a wireless communication module, and a wireless personal area network (WPAN) And may include at least one.

The wireless communication module is a component for transmitting and receiving data according to a wireless communication method, and when the facility control apparatus 20 uses wireless communication, using any one of a wireless network communication module, a wireless LAN communication module, and a wireless fan communication module. Data may be transmitted to or received from the energy management device 30. On the other hand, the wired communication module is for transmitting and receiving data by wire. The wired communication module may be connected to the communication network 40 through a wire to transmit or receive data to the energy management device 30.

In particular, the communication unit 23 according to an embodiment of the present invention communicates with the energy management device 30 and transmits data on the indoor blowing temperature and the blowing amount of the building to the energy management device 30. In addition, the communication unit 23 transmits the operation information of the monitored air conditioning system 10 to the energy management device 30 in order to reduce the air volume by adjusting to the optimal blowing temperature according to a signal for controlling the variable air volume device 12. do.

The storage unit 22 is a device for storing data. The storage unit 22 includes a main memory device and an auxiliary memory device, and stores an application program required for the functional operation of the facility control device 20. The storage unit 22 may largely include a program area and a data area. Here, when the facility control apparatus 20 activates each function in response to a user's request, the facility control apparatus 20 executes corresponding application programs under the control of the controller 21 to provide each function. In particular, the program area according to an embodiment of the present invention includes an operating system for booting the facility control apparatus 20, a program for controlling the variable air volume device 12, a program for monitoring the operation information of the air conditioning system 10, and the like. Save it. In addition, the data area is an area in which data generated according to the use of the facility control apparatus 20 is stored. In particular, the data area according to the embodiment of the present invention stores data about the operation information of the air conditioning system (10). Here, the operation information includes the air supply air volume of the air conditioning system 10, the room temperature during heating and cooling, the valve opening degree of the cooling coil (11a), the valve opening degree of the heating coil (11b), the damper opening degree of the variable air volume device 12, and the like. .

The controller 21 may be a process device that drives an operating system (OS) and each component. For example, the controller 21 may be a central processing unit (CPU). In particular, the control unit 21 according to an embodiment of the present invention communicates with the energy management device 30 through the communication network 40 for energy management of the building. Here, the control unit 21 obtains the operation information of the air conditioning system 10 to reduce the air volume by adjusting the indoor blowing temperature during the heating and cooling of the building according to the request of the energy management device 30 and transmits it to the energy management device 30. do. When the control unit 21 requests control of the variable air volume device 12 of the building from the energy management device 30, the controller 21 controls the variable air volume device 12 to apply the variable air volume method. Subsequently, the controller 21 monitors the power state of the blower based on the operation information collected after the variable wind volume method capable of reducing the power of the blower, and transmits the monitored data to the energy management device 30.

In addition, the facility control apparatus 20 according to an embodiment of the present invention performs a data input function and a display function for energy management of a building. In this case, the facility control apparatus 20 may further include an input unit (not shown) and a display unit (not shown). In particular, the input unit receives various information such as numeric and text information, and transmits a signal input in connection with setting various functions and function control of the facility control apparatus 20 to the controller 21. In addition, the input unit may include at least one of a keypad and a touch pad for generating an input signal according to a user's touch or manipulation. At this time, the input unit may be configured in the form of one touch panel (or touch screen) together with the display unit to simultaneously perform input and display functions. Further, the input unit may be any type of input means that can be developed in addition to an input device such as a keyboard, a keypad, a mouse, a joystick, and the like.

In addition, the display unit displays information on a series of operation states and operation results that occur while performing the function of the facility control apparatus 20. In addition, the display unit may display a menu of the facility control apparatus 20 and user data input by the user. Here, the display unit may be a liquid crystal display (LCD), a thin film transistor (TFT) LCD, an organic light emitting diode (OLED), a light emitting diode (LED), an active matrix organic LED (AMOLED), a flexible display A three-dimensional display (3-dimension), and the like.

4 is a block diagram illustrating a configuration of an energy management apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 4, the energy management apparatus 30 according to the embodiment of the present invention includes a control module 31, a storage module 32, and a communication module 33.

The communication module 33 performs a function for transmitting and receiving data through the facility control apparatus 20 and the communication network 40. Here, the communication module 33 includes RF transmitting means for up-converting and amplifying the frequency of the transmitted signal, and RF receiving means for low-noise-amplifying and down-converting the received signal. The communication module 33 may include at least one of a wireless communication module (not shown) and a wired communication module (not shown). The wireless communication module may include at least one of a wireless network communication module, a wireless LAN or WiFi, a Wireless Fidelity or WiMAX communication module, and a wireless fan communication module.

The wireless communication module is a component for transmitting and receiving data according to a wireless communication method, and when the energy management apparatus 30 uses wireless communication, using any one of a wireless network communication module, a wireless LAN communication module, and a wireless fan communication module. Data can be transmitted and received with the facility control apparatus 20. On the other hand, the wired communication module is for transmitting and receiving data by wire. The wired communication module may be connected to the communication network 40 through a wire to transmit and receive data with the facility control apparatus 20.

In particular, the communication module 33 according to an embodiment of the present invention communicates with at least one facility control device 20 to control the operation information of the air conditioning facility 10 to reduce the air volume by adjusting the indoor blowing temperature during cooling and heating. Receive from device 20. In addition, the communication module 33 transmits a control signal of the variable air volume device 12 to the facility control device 20 to apply the variable air volume method.

The storage module 32 is a device for storing data. The storage module 32 includes a main memory device and an auxiliary memory device, and stores an application program required for a functional operation of the energy management device 30. The storage module 32 may largely include a program area and a data area. Here, when the energy management device 30 activates each function in response to a user's request, the energy management device 30 executes corresponding application programs under the control of the control module 31 to provide each function. In particular, the program area according to an embodiment of the present invention stores an operating system for booting the energy management device 30, a program for analyzing the operation information of the air conditioning system 10 monitored during heating and cooling of the building. In addition, the data area is an area in which data generated according to the use of the energy management device 30 is stored. In particular, the data area according to an embodiment of the present invention stores the operation information of the air conditioning system 10 and the information on the analyzed energy efficiency by periodically monitoring the operation information as a database. Here, the operation information includes the air supply air volume of the air conditioning equipment 10, the room temperature at the time of cooling, the valve opening degree of the cooling coil 11a, the valve opening degree of the heating coil 11b, the damper opening degree of the variable air volume device 12, and the like. .

The control module 31 may be a process device for driving an operating system (OS) and each component. For example, the control module 31 may be a central processing unit (CPU). In particular, the control module 31 according to the embodiment of the present invention collects the operation information for the air conditioning facility 10 of the building from the facility control device 20. Here, the control module 31 requests the facility control device 20 to transmit operation information of the air conditioning facility 10 supplied to the room during the heating and cooling of the building, and receives and stores corresponding data. In addition, the control module 31 analyzes the driving information in connection with the driving trend and the facility performance for the air conditioning facility 10 of the building. That is, the control module 31 derives the first control value through a simulation for controlling the blowing temperature of the blower.

The control module 31 analyzes the annual load rate and operating time of the air conditioning equipment 10, checks the load rate and operating time of the air conditioning equipment 10 at the time of cooling and heating, and the period for the load rate and operating time that matches the preset criteria. Select. In addition, the control module 31 confirms the opening state of the valve of the cooling coil 11a and the heating coil 11b of the air conditioning equipment 10, and adds a flow rate of cold water and hot water based on the result of the check to determine the temperature of the cold and hot air. Determine whether it can be lowered. According to the determination result, the degree of air volume control of the variable air volume device 12 and the degree of change of the air volume according to the change of the cold and hot air volume are confirmed through the facility control device, and the control value of the air blowing temperature is determined during cooling and heating.

The control module 31 monitors the energy state on the basis of the operation information monitored after the application of the variable wind volume method capable of saving the set energy. Here, the control module 31 compares the monitoring operation information to determine whether the blower temperature control of the blower is applied, and if the control of the blowing temperature is necessary, calculates the control value for the blowing temperature, based on the control value Request to the facility control device 20 to control the air conditioning facility (10). That is, the control module 31 sets the second control value by comparing the basic data for each period accumulated with the past statistical data and correcting the first control value for the blowing temperature control of the blower. And, the control module 31 sets the final control value of the blowing temperature from the second control value according to the monitoring information and the site situation obtained through the real-time monitoring of the air conditioning equipment 10 on a specific day, the air conditioning equipment as the final control value Perform control of (10).

The control module 31 requests the facility control device 20 to control the variable air volume device 12. That is, the control module 31 controls the variable air volume device 12 to manage the energy of the building by reducing the air volume by adjusting to the optimum air blowing temperature.

The control module 31 registers and manages operation information in order to provide a blowing amount for the optimum blowing temperature. Then, the control module 31 checks the operation information monitored from the facility control device 20 to analyze the effect according to the energy calorie.

The control module 31 classifies and stores the operation information monitored from the facility control apparatus 20 into at least one of yearly, quarterly, monthly, weekly, daily, and day of the week.

The control module 31 periodically collects driving information after application of the variable wind volume method capable of reducing the power of the blower, and monitors the power state of the blower based on the collected driving information.

The control module 31 monitors the change in the blower power consumption, the blowing temperature, and the like after the change to the set control value. In addition, the control module 31 analyzes the efficiency before and after the change to the total energy consumption in the air conditioning facility 10 after the change to the blowing temperature set value.

In addition, the energy management device 30 configured as described above may be implemented as one or more servers operating in a server-based computing-based method or a cloud method. In particular, data used for building energy management using a cloud computing device may be provided through a cloud computing function that may be permanently stored in a cloud computing device on the Internet. Here, cloud computing utilizes Internet technology in digital terminals such as desktops, tablet computers, laptops, netbooks and smart phones to provide virtualized IT (Information Technology) resources such as hardware (server, storage, (Database, security, web server, etc.), service, data, etc. on demand.

5 is a diagram illustrating a data flow for explaining an energy management method using a variable air volume method according to an exemplary embodiment of the present invention.

Referring to Figure 5, the energy management method using a variable air volume method according to an embodiment of the present invention, first, the energy management device 30 at the step S11 air conditioning equipment 10 during the heating and cooling of the building to the facility control device (20) Request the collection of driving information. In addition, the facility control apparatus 20 periodically collects operation information of the air conditioning facility 10 when heating and cooling the building at the request of the energy management apparatus 30 in step S13, and transmits it to the energy management apparatus 30. Then, the energy management device 30 checks the operation information received in step S15. Here, the operation information includes the air supply air volume of the air conditioning equipment 10, the room temperature at the time of cooling, the valve opening degree of the cooling coil 11a, the valve opening degree of the heating coil 11b, the damper opening degree of the variable air volume device 12, and the like. .

The energy management device 30 analyzes the operation information obtained in step S17 in connection with the operation trend and facility performance of the air conditioning system 10 of the building. At this time, the energy management device 30 analyzes the load rate and operating time of the annual air conditioning equipment 10, checks the load rate and operating time of the air conditioning equipment 10 during heating and cooling, and load rate and operating time matching the preset criteria Select a time period for. In addition, the energy management device 30 confirms the opening state of the valve of the cooling coil 11a and the heating coil 11b of the air conditioning facility 10, and adds the flow rate of cold water and hot water based on the result of the check. Determine whether the temperature can be lowered. According to the determination result, the energy management device 30 checks the degree of air volume control of the variable air volume device 12 and the change of the air flow amount according to the change of the cold and hot air volume through the facility control device. Check the measured value and the set value to decide whether to apply the variable air volume method.

The energy management device 30 requests the control of the variable air volume device 12 to the facility control device 20 in step S19. That is, the energy management device 30 controls the variable air volume device 12 in order to reduce the air volume by adjusting to the optimum air blowing temperature, to save the energy of the building. Thereafter, the facility control device 20 controls the variable air volume device 12 according to the request of the energy management device 30 in step S21. In addition, the variable air volume device 12 applies the variable air volume method in step S23. At this time, the variable air volume device 12 adjusts the numerical value for the air volume by adjusting the indoor air temperature according to the control of the energy management device (30).

The energy management device 30 requests monitoring of the operation information to the facility control device 20 to provide an optimal blowing temperature and blowing amount in step S25. In addition, the facility control apparatus 20 periodically monitors operation information in order to provide an optimal blowing temperature and blowing amount at step S27, and transmits the monitored operation information to the energy management device 30 at step S29.

The energy management device 30 checks the operation information received from the facility control device 20 in step S31 to analyze the energy saving effect according to the power saving of the blower. In this case, the energy management device 30 classifies and stores the operation information monitored by the facility control device 20 into at least one of the year, quarter, month, week, day, day.

The energy management device 30 according to the embodiment of the present invention monitors the amount of energy generation based on the operation information monitored after the application of the variable wind volume method capable of saving energy.

Through this, the network-based building energy management system can be configured to minimize the building cost in the building, and it is possible to build in stages by segmentation and modularization by function. In addition, it provides real-time or period-based data analysis service through integrated platform to maximize energy saving effect through systematic integrated management of multiple buildings, and analyzes web-based real-time or period-based energy consumption pattern to continuously check building energy management status. And energy feedback activities through feedback. In addition, by adjusting the blowing temperature in accordance with the heating and cooling load of the building to reduce the amount of blowing, it reduces the energy use for the blowing power. In addition, the energy management system of the central management method can be applied during the cooling light load period, such as the mid-term or early winter when the heating and cooling load occurs, and can be applied in buildings with a large indoor heating load even during heating.

6 is a flowchart illustrating an operation of an energy management apparatus according to an embodiment of the present invention.

Referring to FIG. 6, the energy management device 30 according to the embodiment of the present invention requests collection of operation information for the air conditioning facility 10 when heating and cooling the building to the facility control device 20 in step S41. Acquire and confirm the corresponding data.

The energy management device 30 analyzes the driving information and operation performance of the building air conditioning system 10 and the facility performance confirmed in step S43. At this time, the energy management device 30 analyzes the load rate and the operating time of the annual air conditioning equipment 10, and grasps the period of the load rate and the operating time of the air conditioning equipment 10 during the heating and cooling by short analysis. On the other hand, the energy management device 30, if the heat transfer area of the coil is insufficient, even if the flow rate of cold and hot water is no longer heat exchange, because the building energy management system 100 is not applicable to the cooling coil of the air conditioning equipment specification (11a) and heat transfer area of heating coil (11b) are to be checked.

In particular, the energy management device 30 checks the opening state of the valve of the cooling coil 11a and the heating coil 11b of the air conditioning system 10, and adds the flow rate of cold water and hot water based on the result of the check, Determine whether the temperature can be lowered. According to the determination result, the control unit 20 determines the degree of air volume control of the variable air volume device 12 and the degree of change of the air volume according to the change of the cool air temperature, and determines the control value of the room temperature of the room temperature during heating and cooling. .

For example, the energy management device 30 according to an embodiment of the present invention monitors the driving information to apply the variable wind volume method to the energy management of the building, as shown in Table 1 below.

No Item Unit of Measure One Air supply air volume of air conditioning equipment ㎥ 2 Room temperature during heating and cooling ℃ 3 Cooling coil valve opening % 4 Heating coil valve opening % 5 Damper opening of variable air volume device %

Referring to <Table 1>, the energy management device 30 monitors the air supply air volume of the air conditioning system 10. At this time, the energy management device 30 checks the adequacy of the air volume compared with the room temperature. In addition, the energy management device 30 checks the room temperature during heating and cooling. At this time, the energy management device 30 compares the set value and the measured value. The energy management device 30 also checks the valve opening of the cooling coil 11a and the valve opening of the heating coil 11b. At this time, the energy management device 30 checks the power of the cooling coil (11a) and the heating coil (11b) for the application of the building energy management system 100. In addition, the energy management device 30 checks the damper opening degree of the variable air volume device 12. At this time, the energy management device 30 confirms the room for reducing the amount of air flow before the application of the building energy management system 100.

That is, the energy management device 30 derives the first control value through a simulation for controlling the blowing temperature of the blower.

The energy management device 30 requests the control of the variable air volume device 12 to the facility control device 20 in step S45. In addition, the energy management device 30 performs the control of the variable air volume device 12 to manage the energy of the building with the air flow amount according to the optimal blowing temperature. That is, the energy management apparatus 30 sets the second control value by comparing the basic data for each period accumulated with the past statistical data and correcting the first control value for the blowing temperature control of the blower. Then, the energy management device 30 sets the final control value of the blowing temperature from the second control value according to the monitoring information and the site situation obtained through the real-time monitoring of the air conditioning equipment 10 on a specific day, and air-conditioning to the final control value The control of the installation 10 is performed.

The energy management device 30 registers and manages operation information of the air conditioning facility 10 in step S47. Then, the energy management device 30 monitors the driving information. Meanwhile, the energy management device 30 monitors the reciprocating temperature difference of the cold water coil in real time since the amount of cold and hot water increases, thereby reducing the cold / hot water coil reciprocation temperature difference and decreasing the efficiency of refrigeration.

The energy management apparatus 30 receives and confirms the operation information monitored from the facility control apparatus 20 in step S51, and analyzes the effect according to the amount of energy calories. In this case, the energy management device 30 classifies and stores the operation information monitored by the facility control device 20 into at least one of the year, quarter, month, week, day, day. On the other hand, the energy management device 30, in the case of the variable wind flow method, in order to greatly change the blowing power according to the building use situation or the outside air load, check the energy saving effect, and the average value for a certain period of time rather than short-term data Applying energy management to buildings effectively compares total values.

The energy management device 30 monitors a change in blower power consumption, blowing temperature, etc. after the change to the set control value. In addition, the energy management device 30 analyzes the efficiency before and after the change to the total energy consumption in the air conditioning facility 10 after the change to the blowing temperature set value.

In the process of applying the building energy management system 100 according to an embodiment of the present invention, the energy management device 30 may cause condensation in a duct or discharge port if the blowing temperature is too low, and if the reciprocating temperature difference of the coil does not occur, the freezer The efficiency of can be reduced. If the energy management device 30, the reciprocating temperature difference is out of the range of 5 ~ 8 ℃, to adjust the blowing temperature much lowered. In addition, the energy management device 30 controls not to change the minimum air flow value because the concentration of carbon dioxide can be increased if the minimum air flow value of the variable air flow method is changed.

7 is a flowchart illustrating a process of monitoring the main items of the building by the energy management device according to an embodiment of the present invention.

Referring to FIG. 7, in the process of monitoring the main items of the building by the energy management device 30 according to the embodiment of the present invention, the energy management device 30 connects the facility control device 20 and the communication network 40. Communicates to send and receive data needed for energy management of buildings.

The energy management device 30 monitors operation information to apply a variable wind volume method to the energy management of the building in step S61.

During monitoring, the energy management device 30 checks whether the set value of the room temperature is the same as the measured value in step S63. As a result of the check, when the set value and the measured value of the room temperature are the same, the energy management device 30 checks whether the coil valve opening degree is a full opening in step S65. That is, the energy management device 30 determines whether the opening degree for the cooling coil and the heating coil is less than 100%.

When the coil valve opening degree is less than 100%, the energy management device 30 checks whether the airflow amount for controlling the variable airflow device 10 is a lower limit in step S67. Here, if the airflow amount is not the lower limit, the energy management device 30 checks whether a past claim has occurred for the corresponding operation information in step S69. And, if the past claims do not occur, the energy management device 30 requests the facility control device 20 to reduce the amount of blowing by adjusting the blowing temperature in step S71.

If the set value of the room temperature is not the same as the measured value in step S63, the energy management device 30 compares the set value of the room temperature and the measured value in step S73. That is, the energy management device 30 checks whether the setting value of the indoor temperature in summer is smaller than the measured value, and checks whether the setting value of the indoor temperature in winter is larger than the measured value.

If the result of the comparison between the set value of the room temperature and the measured value is satisfied, the energy management device 30 compares the air conditioning load and the air conditioning capacity of the building in step S75. Here, when the air conditioning load exceeds the air conditioning capacity, the energy management device 30 proceeds to step S65. On the other hand, if the air conditioning load does not exceed the air conditioning capacity, monitoring of operation information is continuously executed.

On the other hand, if the set value of the room temperature is the same as the measured value, the energy management device 30 checks whether the air flow amount for controlling the variable air volume device 12 in step S77. Here, if the airflow amount is not the lower limit, the energy management device 30 checks whether a past claim for the corresponding operation information occurs in step S79. In addition, when past claims do not occur, the energy management device 30 requests the facility control device 20 to adjust the room temperature in step S81.

As a result of monitoring, the energy management device 30 does not satisfy the condition that the coil valve opening degree is less than 100%, the air flow amount for controlling the variable air volume device 12 is lower, or a past claim for the monitoring item is generated. In this case, monitoring of operation information is continuously executed.

Energy management system 100 using a variable air flow method according to an embodiment of the present invention, before changing the air flow amount by adjusting the blowing temperature according to the variable air flow method, in order to check the expected savings and effects, the outside air volume, air supply air volume, Collects data on room temperature, air supply temperature, unit price, and monthly power consumption. However, when the amount of outside air is unknown, the mixing temperature of return air RA and outside air OA can be used. Here, all the items are to use the average value for the period to apply the variable air volume method. For example, when the variable air flow rate is applied in July and August, the average data from July 1 to August 31 is used. However, if historical data has not accumulated in the building to be applied, it can be used for two to three days at the request of the company. The unit price of power is applied to a unit price corresponding to the application period of the variable wind volume method.

The energy management system 100 using the variable air volume method according to an embodiment of the present invention analyzes the energy saving facility, the energy increasing facility, the proper temperature and flow rate, the required investment cost, and the like, which are expected when the variable air volume method is applied, thereby saving energy. To calculate. That is, the average heat load generated in the room is calculated by checking the indoor heat load, using the temperature difference and the air supply amount between the room temperature and the outside temperature. When the air supply temperature to be changed is set, the amount of air that is expected when the air supply temperature is changed is set using the calculated heat generated in the room. And it is confirmed whether the load of the air conditioning equipment 10 by raising the air supply temperature is raised. Before the variable air volume method is applied, the load of the air conditioning facility 10 is calculated using the temperature difference and the air volume of the mixed air and the air supply SA, and the case after the variable air volume method is applied is compared to check whether the load is increased or decreased. Here, when there is no increase in the load of the air conditioning equipment 10, the amount of power consumption or reduction of the power consumption of the blower is calculated by using the air supply air volume of the variable air flow method and the air volume before application. Then, the amount of energy savings is calculated using the amount of power consumption or the blower operating time for the application period of the variable wind volume method. Through this, if the energy management system 100 using the variable air flow method to supply a lower air supply temperature, it is possible to reduce the air volume accordingly, reducing the fan power of the blower.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

The present invention is to save energy by adjusting the blowing temperature in accordance with the heating and cooling load through the analysis of the operation information for the air conditioning equipment to reduce the amount of blowing. Through this, the network-based building energy management system can be configured to minimize the building cost in the building, and it is possible to build in stages by segmentation and modularization by function. In addition, it provides real-time or period-based data analysis service through integrated platform to maximize energy saving effect through systematic integrated management of multiple buildings, and analyzes web-based real-time or period-based energy consumption pattern to continuously check building energy management status. And energy feedback activities through feedback. In addition, by adjusting the blowing temperature in accordance with the heating and cooling load of the building to reduce the amount of blowing, it reduces the energy use for the blowing power. In addition, the energy management system of the central management method can be applied during the cooling light load period, such as the mid-term or early winter when the heating and cooling load occurs, and can be applied in buildings with a large indoor heating load even when heating. This is not only a possibility of commercialization or sales, but also a possibility of being industrially applicable since it is practically possible to carry out clearly.

10: air conditioning equipment 12: variable air volume device 20: equipment control device
30: energy management device 40: communication network 21: control unit
22: storage unit 23: communication unit 31: control module
32: storage module 33: communication module 11a: cooling coil
11b: heating coil 100: building energy management system

Claims (11)

A communication module for communicating with at least one facility control device for controlling the air conditioning facility and receiving operation information for the air conditioning facility;
A storage module for storing operation information on the air conditioning equipment; And
Analyzing the trends of the blowing temperature and the heating and cooling load of the air conditioning equipment to set the application period of the blower temperature control of the blower, and to determine whether to apply the blower temperature control of the blower by comparing the operation information monitored through the communication module And a control module for calculating a control value for the blowing temperature when the control of the blowing temperature is necessary, and for requesting that the air conditioning equipment be controlled based on the control value;
Energy management device using a variable air flow method comprising a. The method of claim 1, wherein the control module
Periodically monitoring the driving information, and checking an energy efficiency for applying the blowing temperature control of the blower based on the analysis result of the monitored driving information. The method of claim 1, wherein the driving information
Energy management device using a variable air flow method characterized in that it comprises at least one of the air supply air volume of the air conditioning, the room temperature during cooling and heating, the opening of the cooling coil valve, the opening of the heating coil valve and the damper opening of the variable air volume device. The method of claim 1, wherein the control module
Based on the operation information collected after the application of the variable wind volume method that can reduce the power of the blower, the energy management using the variable wind volume method characterized by continuously monitoring the power state of the blower to check the efficiency according to the energy calorie Device. The method of claim 1, wherein the control module
By deriving a first control value through a simulation for controlling the blower temperature of the blower, by comparing the basic data for each period accumulated and past statistical data to correct the first control value for the blower temperature control of the blower 2 set a control value, and set a final control value of the blowing temperature from the second control value according to the monitoring information obtained through real-time monitoring of the air conditioning equipment on a specific day, and control the air conditioning equipment with the final control value. Energy management device using a variable air flow rate characterized in that to perform. Setting an application period of the blower temperature control of the blower by analyzing a trend of the blower temperature and the heating / cooling load of the air conditioning system by the energy management device;
Comparing the operation information monitored by the energy management device to determine whether the blower temperature control of the blower is applied;
Calculating, by the energy management device, a control value for the blowing temperature when the blowing temperature is required to be controlled; And
Requesting, by the energy management device, that the air conditioning facility is controlled based on the control value;
Energy management method using a variable wind volume method characterized in that it comprises a. The method of claim 6, wherein the setting step
Requesting, by the energy management device, operation information during heating and cooling to a facility control device; And
Receiving, by the energy management device, data corresponding to the request, and storing the data;
Energy management method using a variable wind volume method characterized in that it further comprises. The method of claim 6, wherein the setting step
Analyzing, by the energy management device, an annual load rate and an operating time of the air conditioning system;
Confirming, by the energy management device, a load ratio and an operating time of an air conditioning facility when heating and cooling the air; And
Selecting, by the energy management device, a period for a load rate and an operating time matching a preset criterion;
Energy management method using a variable wind volume method characterized in that it comprises a. The method of claim 6, wherein the calculating step
Confirming, by the energy management device, the opening state of the valve of the cooling coil and the heating coil of the air conditioning system;
Determining whether the energy management device can lower the temperature of the cold / hot air by adding the flow rates of cold water and hot water based on the result of the check;
Determining, by the energy management device, the degree of change of the air volume according to the change of the air volume control degree of the variable air volume device and the cold / hot air amount according to the determination result; And
Determining, by the energy management device, a control value of a blowing temperature during heating and cooling based on the identified data;
Energy management method using a variable wind volume method characterized in that it comprises a. The method according to claim 6,
Requesting the energy management device to monitor the operation information to the facility control device; And
Storing, by the energy management device, the monitored driving information by at least one of yearly, quarterly, monthly, weekly, daily, and day of the week;
Energy management method using a variable wind volume method characterized in that it further comprises. The method according to claim 6,
Deriving, by the energy management device, a first control value through a simulation for controlling a blowing temperature of the blower;
Setting a second control value by comparing the basic data for each period in which the energy management device is accumulated with historical statistical data and correcting the first control value for blowing temperature control of the blower;
Setting, by the energy management device, a final control value of the blowing temperature from the second control value according to the monitoring information obtained through real-time monitoring of the air conditioning facility on a specific day; And
Performing, by the energy management apparatus, the control of the air conditioning equipment to the final control value;
Energy management method using a variable wind volume method characterized in that it further comprises.

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