KR101891580B1 - Air Phase Monitoring System - Google Patents

Abstract

The present invention relates to an air-conditioning operation route monitoring system implemented to compare and analyze an air-conditioning energy optimum operation route and an actual operation route at every moment and to monitor an air-conditioning energy route efficiency, The air condition value is measured on every part of the air condition value, and the collected air condition value is displayed on the air condition line at every moment, And the optimal operation path that minimizes the air conditioning energy in the current state are displayed at the same time to provide a screen showing the difference between the actual path and the optimum path and the energy consumed in the actual air conditioning operation path The air conditioning energy consumption coefficient divided by the energy required in the optimal air-conditioning operation path (Coefficien t of Energy Consumption for air-conditioning), it is necessary to recognize the need to reduce the operating energy of the air conditioner by presenting a qualitative and quantitative index of how well the air conditioner is operating and how efficiently it operates The present invention relates to an air-conditioning operation route monitoring system that can provide a basis for calculating a quantitative reduction goal.

Description

Air-conditioning operation path monitoring system {Air Phase Monitoring System}

The present invention relates to an air conditioning operation path monitoring system, and more particularly, to an air conditioning operation path monitoring system that measures and collects two or more air condition values at all portions of an air condition value from an air inflow portion to an air supply portion of an air conditioner. The actual air conditioning operation path in which the state of the air condition value is displayed on the air line at every moment and the state value is displayed as a line segment so that the air condition change process in the present air conditioner is displayed, It is also possible to provide a screen showing the difference between the actual path and the optimal path by simultaneously displaying the optimum driving path to be consumed and to calculate the energy consumption coefficient of the air conditioning energy consumed by the actual air conditioning operation path Consumption for air-conditioning) is calculated and displayed so that the air conditioner The air-conditioning operation path monitoring system is designed to recognize the need to reduce the operating energy of the air conditioner by presenting qualitative / quantitative indicators of how well it operates and how efficiently it operates, and to provide a basis for calculating quantitative reduction goals. .

The air conditioner is a device for adjusting the indoor air temperature and humidity to meet the requirements, and changes the air condition by controlling the components according to the ambient temperature, humidity and indoor load variation. Here, the components of the air conditioner generally include a heating coil, a cooling coil, and a humidifier, and the energy saving type air conditioner may include various components such as an overall heat exchanger and a dehumidification rotor.

The change of air condition by each air conditioner component is called process, and there are four processes of heating, cooling, humidification and dehumidification. In order to change the state of the air, energy must be introduced or removed from the air. That is, the heating and humidifying processes are energy input processes by heating coils or humidifiers, and cooling and dehumidifying processes are processes of removing energy from air by cooling coils.

The control method of the air conditioning system includes a central controller for controlling the operation of the air conditioner and the like. At this time, the central controller is configured to control the air conditioner from the user's point of view and to monitor the condition of the air conditioner, Air conditioner, air inlet, outdoor air inlet, temperature and humidity of the room to be air-conditioned. However, in the conventional art, in monitoring the state of the air, it is necessary to monitor the state values of each sensor position with time according to the time, so that it is impossible to know whether or not each process at a specific time follows the optimal operation path, There is a problem that information can not be known.

On the other hand, the air conditioner tries to adjust the indoor condition by adjusting the opening / closing valves of the components according to the respective logic in order to keep the indoor condition constant even in the change of the outdoor air condition and the indoor load. However, due to various reasons such as a sudden change of the outside air condition, a sudden change of the indoor load, a wintering problem due to the cold outside air in winter, and a delay operation of the control valve by the feedback control, the actual operation path of the air conditioner greatly differs from the optimum operation path do. Particularly in summer, it is possible to perform energy redundant operation which is caused by overlapping of energy input process and removal process such as cooling dehumidification (removal) - heating (input) - humidification (input) Path. However, in the conventional air conditioner monitoring system, only the temperature and humidity of the room can be monitored over time. In such a monitoring system, energy redundancy consumption due to process redundancy occurs There is a problem that quantitative redundant energy consumption is not even known.

Korean Patent Laid-Open No. 10-2008-0040073 (published on May 08, 2008) shown in FIG. 1 relates to a dynamic control method of an air conditioning system, which measures ambient temperature and humidity, room temperature and humidity and compares enthalpy, And it can be operated in optimum condition by control of external quantities and ventilation amount. It can be displayed dynamically in real time so that air guidance and whole process can be displayed optimally on the monitoring display of the air conditioning control system. So that it is possible to obtain a desired image.

However, in the prior art of FIG. 1, the temperature and humidity values of both the outside air and the room air are measured in a variable air volume air conditioning system in which the outdoor air volume and the ventilation volume can be easily changed instead of the regular air volume air conditioner system such as a clean room, Is a system that enables energy saving operation by adjusting the ratio of the amount of outdoor air introduced and the amount of ventilation. This system does not apply to the regular airflow air conditioning system. It measures the humidity only at three places of outdoor air, ventilation and air supply, The ventilating point, and the unloading point among the state values of the respective processes shown in the step (a), (b), and (c). For this reason, in the prior art, the optimum operation path and the actual operation path can not be displayed on the air line, and the air conditioning energy consumption coefficient (CEC) can not be obtained. In addition, the HMI image shown in the prior art shows only the route similar to the above-mentioned optimal driving route so that the use for the HMI screen shows the location of the external point, the ventilation point, the mixing point and the quickening point, The present invention quantitatively displays the external points, the ventilation points, and the extent to which each process from the mixing point to the dispensing point is far from the optimal driving path, and stores the air-conditioning operation path as data every minute , And the monitoring system can be used as a tool for analyzing when and why the air-conditioning operation path departs from the optimum operation path by reproducing the stored air-conditioning operation path at various speeds and showing the change in the air operation path by moving images.

Korean Patent Registration No. 10-1238318, entitled " Dynamic Control Method of Building Air Conditioning System " has been proposed. In this patent, Calculating coordinates on an air line map for each sensing point; Displaying the corresponding coordinates calculated in the step on the air line and displaying a step-by-step process; Comparing the difference between the set reference temperature / humidity and the current temperature / humidity; A PID control by a temperature and humidity controller when the difference between the reference temperature / humidity and the current temperature / humidity deviates from an allowable deviation; Judging whether the difference between the reference temperature / humidity and the current temperature / humidity is within an allowable deviation, whether it is summer or winter; Determining whether the heating device is operating in summer or whether the cooling device is operating in winter; Controlling the air volume by calculating a current load and an air volume when the air conditioner is in operation; Calculating the enthalpy of the outside air and the indoor air when the air conditioning apparatus is not operated; Calculating an optimal enthalpy value for a mixing point of the outside air and the room air; Performing PID control with the optimal enthalpy value; The air conditioning system can be operated at the optimum state at any time by calculating the enthalpy of the most optimal mixing point. Under the condition that there may be a limit in the enthalpy control, the total air flow rate However, in the above patent, since the calculation is performed through the enthalpy control, the ventilation amount of the room and the outside air can be increased or decreased to be used It is impossible to use the apparatus in a place where the positive pressure of the room is absolutely to be set like a clean room like a clean room. In particular, In the patent, Since it is impossible to use the graph properly and it is not possible to calculate the optimum air-conditioning operation route and the air energy consumption coefficient, it is impossible to accurately grasp the energy efficiency to be operated because only the best route to be used in the apparatus is displayed. .

Korean Patent Publication No. 10-2014-0061580 Korean Patent Laid-Open No. 10-2009-0095452 Korean Patent Publication No. 10-2008-0040073

SUMMARY OF THE INVENTION The present invention has been made in an effort to solve the above-mentioned problems, and it is an object of the present invention to provide an air conditioner, The air conditioning energy consumption coefficient divided by the energy consumed in the air conditioning operation path is calculated and displayed on the monitoring screen. Each state value is stored as data, and the stored air conditioning operation path is reproduced at various speeds, It can be used as a tool to analyze when and why the air-conditioning operation route deviates much from the optimum driving route. By presenting a qualitative and quantitative index of the air-conditioning operation route, Recognize the need to reduce driving energy and quantify It is possible to provide a basis for the calculation of the target savings, thereby providing an air-conditioning operation route monitoring system capable of saving energy as an energy-saving monitoring system in the existing management-type monitoring system.

According to one aspect of the present invention, there is provided a measuring sensor capable of measuring two or more air condition values of respective portions in different states from an air inlet of an air conditioner to an air conditioner; Wherein two or more state values measured by the measurement sensors are simultaneously displayed on an air line in real time and each state value is connected in the same flow as an air flow so that a process by each component of the air conditioner is calculated, A monitoring system controller capable of calculating the air conditioning energy consumption coefficient (CEC) by dividing the actual air conditioning operation path energy by the optimum air conditioning operation path energy; A monitoring HMI configured to display the air conditioning operation path and the air conditioning energy consumption coefficient (CEC) calculated by the monitoring system controller; And a system for storing the state values in a database in real time.

The air conditioning operation route monitoring system according to the present invention allows the air conditioner to easily determine whether the air conditioner is in a normal operation state or an abnormal operation state by allowing the user to view the optimum air-conditioning energy operation route and the actual operation route at each moment on one screen It is possible to provide qualitative indicators and to provide a quantitative index of the operating efficiency of the air conditioner by calculating and displaying the real-time, the time average, the daily average, the monthly average and the average annual air-conditioning energy consumption coefficient, By storing the driving route in the database and reproducing the air-conditioning operation route for a specific period at various speeds, it shows the change of the air driving route to the moving image. Thus, it is analyzed when the in- There is an effect that can be done, , It is effective to provide a tool that can realize realizable energy saving targets and to quantitatively obtain the reduction rate. In addition to the clean room, the air conditioner is installed and operated By using the index of air conditioning energy consumption coefficient at all sites, it is possible to select sites and air conditioners that require energy saving by site and air conditioner by comparing operation efficiency by site or air conditioner.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a conventional building air-conditioning system
2 is a block diagram of an air-conditioning operation route monitoring system according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating a psychrometric chart as a basis for displaying the air conditioning operation path on the HMI 130. The horizontal axis indicates dry bulb temperature, the vertical axis indicates absolute humidity, the inclined axis indicates enthalpy, And the relative humidity is indicated. When the state point is designated by two status values, the remaining status values can be known. The two status sensors installed in each component of the air conditioner measure two status values, Value and the absolute humidity value.
Fig. 4 shows the HMI of the air-conditioning operation route monitoring system showing the optimum air-conditioning operation route at a specific time. ① Mixing → ② Heating → ③ Humidification only has a heating process and a humidification process.
5 shows the HMI of the air-conditioning operation route monitoring system which shows the actual air-conditioning operation route at a specific time. ① Mixing → ② Heating → ③ Cooling → ④ Reheating → ⑤ There is a duplication operation process in which energy input and removal are repeated by humidification.
6 is an air-conditioning operation route monitoring system image in which the optimum air-conditioning operation route and the actual air-conditioning operation route at a specific time are indicated together.
FIG. 7 shows a method for obtaining the absolute value of the enthalpy change on the actual air-conditioning operation path, obtaining the enthalpy change value on the optimal air-conditioning operation path, and obtaining the air conditioning energy consumption coefficient (CEC).
8 is a graph showing the optimum air-conditioning operation path when the enthalpy (8.7 kcal / kg) at the supply point (15.8 DEG C, 7.99 g / kg) is larger than the enthalpy (6.4 kcal / kg) .
9 shows the optimum air-conditioning operation path when the enthalpy (7.4 kcal / kg) of the unloading point (14.3 캜, 6.5 g / kg) is smaller than the enthalpy (10.6 kcal / kg) of the mixing point (22.2 캜, 9.1 g / Fig.
10 is a diagram illustrating a method for calculating the best air-conditioning operation route.
FIG. 11 shows a still cut in which the daily average air-conditioning operation path is reproduced at various speeds to achieve the same effect as viewing a moving image. The air-conditioning driving route seems to be animated, and when the air conditioner is operated inefficiently, especially when there is a sudden change of the outside air such as a change of season, there are many inefficient driving methods. .
By showing steal cuts at every moment, time average, daily average or average air-conditioning operation route stored in the database, it is possible to grasp the change pattern of the driving route and to check when the air-conditioning driving route deviates much from the optimum driving route Can be used for purposes.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the description of the present invention is merely an example for structural or functional explanation, and the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, the embodiments are to be construed as being variously embodied and having various forms, so that the scope of the present invention should be understood to include equivalents capable of realizing technical ideas. Also, the purpose or effect of the present invention should not be construed as limiting the scope of the present invention, since it does not mean that a specific embodiment should include all or only such effect.

The meaning of the terms described in the present invention should be understood as follows.

The terms "first "," second ", and the like are intended to distinguish one element from another, and the scope of the right should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected to the other element, but there may be other elements in between. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

It should be understood that the singular " include "or" have "are to be construed as including a stated feature, number, step, operation, component, It is to be understood that the combination is intended to specify that it does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used predefined terms should be interpreted to be consistent with the meanings in the context of the related art and can not be interpreted as having ideal or overly formal meaning unless explicitly defined in the present invention.

Now, an air conditioning operation route monitoring system according to an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 2, the air conditioning operation path monitoring system 100 includes a measurement sensor 110, a monitoring system controller 120, a monitoring HMI 130, and a database 140.

 The thermometer and the hygrometer are fixedly installed so as to measure the air condition values of the different parts from the air inlet of the air conditioner to the air conditioner as shown in FIG. 2, and measure the respective state points.

The air conditioning operation path monitoring system controller 120 calculates the absolute humidity using the temperature value and the humidity value transmitted from the measurement sensor 110, displays the actual operation path state value on the air line, Calculates the total enthalpy change amount by calculating the enthalpy change on the actual air conditioning operation path as an absolute value, calculates the optimum operation path state value, calculates the optimal air conditioning operation path by connecting the state values, and calculates the air enthalpy- And calculates the air conditioning energy consumption coefficient by dividing the actual enthalpy change amount of the actual air-conditioning operation path by the optimal air-conditioning operation path enthalpy change amount. The air condition value of the real- , And the air conditioning operation route of the real time or specific time or specific period is stored in the monitoring HMI 130 Displays the air conditioning energy consumption coefficient (CEC).

In one embodiment, the temperature values and humidity values measured at the respective portions of the air conditioner are transmitted to the air conditioning operation path monitoring system controller 120, and when the humidity values are relative humidity or dew point temperature, .

[Equation 1]

Water vapor pressure = Saturated water vapor pressure x Relative humidity / 100

Absolute humidity = 0.62198 x water vapor pressure / (1.0332-water vapor pressure)

In the air conditioner, each component is controlled to change the state of the air as the outside air temperature and humidity state changes, and the air conditioner supplies the air to the air conditioning room. In particular, the clean room air conditioner or outdoor air conditioner has a very large outdoor air intake amount to keep the positive pressure in the clean room, and keeps the introduced air flow rate constant. When the air flow rate of the air conditioner and the outside air conditioner is constant, such as a clean room, the minimum energy required to meet the required temperature and humidity in the room is determined according to the outdoor air temperature and humidity condition, the indoor temperature and humidity condition, It consumes minimum energy when proceeding without duplication of removal process. Here, the current energy consumption can be calculated as the integrated value of the electric power meter or the gas flow meter for measuring the gas consumption amount, but since the electric power meter or the gas flow meter is not separately installed in many of the air conditioning equipments, the instant energy consumption of the individual air conditioning equipments can be obtained There is no. On the other hand, the theoretical moment energy consumption can be calculated by expressing the above process by each component of the air conditioner on the air line and adding the enthalpy change amount by each process to calculate the instantaneous energy consumption for the unit air amount.

When the process by each component of the air conditioner is indicated on the air line, the line connecting the air line is called the driving route. The air line driving route consuming the minimum energy without redundancy of the energy input process and the energy removing process is referred to as the optimum driving route FIG. 8 is a graph showing the relationship between the enthalpy of the mixing point and the enthalpy of the mixing point when the enthalpy of the mixing point is smaller than the enthalpy of the mixing point, . ≪ / RTI > The current driving route is called the actual driving route and is shown in Fig. FIG. 6 is a diagram showing an optimum driving path and an actual driving path in a superimposed manner.

The minimum energy-consuming operation path that can be implemented with the air-conditioner component already manufactured and installed is called the optimal driving path (the best driving path is when redundant operation is inevitable) and is shown in FIG.

In one embodiment, the air-conditioning operation path monitoring system controller calculates the optimum operation path between the mixing point of the outdoor air and the ventilating point, and when the enthalpy of the supply point is larger than the mixing point, The point where the hot water secretion line and the line segment parallel to each other (Fig. 8 red slope line) meet the humidifying steam or the water spray temperature applied to the target air conditioner passing through a constant line having a constant absolute humidity (red horizontal line in Fig. 8) The optimal driving path as shown in Fig. 4, that is, the heating from the mixing point to the heating point, and the humidification from the heating point to the feeding point are calculated.

In one embodiment, when the air-conditioning operation path monitoring system controller calculates the optimum operation path between the mixing point and the air-cooling point of the outdoor air and the ventilation point, if the enthalpy of the supply point is smaller than the mixing point, (FIG. 9, red slope line) passing through the supply point and a line segment having a constant absolute humidity passing through the supply point (FIG. 9, red horizon line) are calculated as a dehumidifying point, and an optimum driving path is calculated.

7, the absolute value of each enthalpy change amount on the actual air-conditioning operation path is added to calculate the actual air-conditioning operation path total enthalpy change amount, and the actual air- (CEC) is calculated and displayed on the monitoring HMI 130. The time average, daily average, and monthly average value of each state value are calculated by the operation of the driver, and the specific time, specific day, The average air-conditioning operation route of the month is displayed on the monitoring HMI (130), and the time average, daily average, monthly average, and average annual air conditioning energy consumption coefficient can be calculated and displayed on the monitoring HMI (130). The real-time air-conditioning energy consumption coefficient (CEC) calculated in Fig. 7 was calculated to be 3.2.

11, the air-conditioning operation route monitoring system controller 120 reproduces the air-conditioning operation route for a specific period at various speeds by the operation of the driver and displays it as a moving image, It is possible to grasp the change pattern of the driving route, and to provide information on the optimum driving route and when to depart much. Fig. 11-A is 2016/02/10, Fig. 11-B is 2016/02/11, Fig. 11-C is 2016/02/12, -E) is 2016/02/14, Fig. 11-F is 2016/02/15, Fig. 11-G is 2016/02/16, If you view the route as a continuous steel cut, the air-conditioning operation route appears to move to the moving image. When the air conditioner is operated inefficiently, in particular, when there is a sudden change of the outside air such as a seasonal change, You can provide the data to determine what the cause is. That is, it can be seen that the CECs of FIGS. 11 (c) and (d) are formed to be as high as 4 and 4.4, which is particularly inefficient.

As described above, the embodiment of the present invention is not limited to the above-described apparatus and / or method, but may be implemented by a program for realizing a function corresponding to the configuration of the embodiment of the present invention and a recording medium on which the program is recorded And the present invention can be easily implemented by those skilled in the art from the description of the embodiments described above. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

100: Air-conditioning operation route monitoring system
110: Measurement sensor
120: Air-conditioning operation path monitoring system controller
130: Monitoring HMI
140: Database

Claims (6)

In an air-conditioning operation route monitoring system,
A measuring sensor (110) capable of measuring two or more air condition values of different parts from the air inlet of the air conditioner to the air conditioner;
Wherein two or more state values measured by the measurement sensors are simultaneously displayed on an air line in real time and each state value is connected in the same flow as an air flow so that a process by each component of the air conditioner is calculated, A monitoring system controller 120 for calculating the air conditioning energy consumption coefficient (CEC) by dividing the actual air conditioning operation path energy by the optimum air conditioning operation path energy;
A monitoring HMI 130 configured to display the air conditioning operation path and the air conditioning energy consumption coefficient (CEC) calculated by the monitoring system controller;
And storing the state values in a database (140) in real time;
The monitoring system controller (120)
Calculating an absolute humidity in temperature and humidity delivered from the measurement sensor (110);
Displaying the air state value on an air line, displaying a state value as a line segment, and calculating an actual driving route;
Calculating an optimum driving path from the mixing point to the feeding point;
Calculating enthalpy for each state value;
Calculating an optimal air-conditioning operation enthalpy with an absolute value of a mixing point enthalpy and a quenching point enthalpy difference;
Calculating an actual air-conditioning operation enthalpy calculated by adding an absolute value of an enthalpy difference for each process in an actual air-conditioning operation path;
Calculating an air conditioning energy consumption coefficient (CEC) by dividing an actual air conditioning operation enthalpy by an optimal air conditioning operation enthalpy;
Storing each calculated state value in a database;
And the calculated air-conditioning operation route and the air-conditioning energy consumption coefficient are displayed on the monitoring HMI (130). The method according to claim 1,
The measurement sensor may be a thermometer and a hygrometer separately or may be provided with a thermometer or an hygrometer installed outside the air conditioning system. Monitoring system delete The method according to claim 1,
Wherein the air-conditioning operation route monitoring system controller generates data of a time average, an average, and a monthly average for data of a specific period stored in the database and stores the data in a database. The method according to claim 1,
Wherein the air conditioning operation route monitoring system controller reproduces the air driving route for a specific period stored in the database at various speeds and displays it as a moving picture so as to grasp a change pattern of the air conditioning operation route for a specific period. Driving path monitoring system.
The method according to claim 1,
Wherein the air conditioning operation route monitoring system controller can calculate the time average air conditioning energy consumption coefficient, the daily average air conditioning energy consumption coefficient, the monthly average air conditioning energy consumption coefficient, and the yearly average air conditioning energy consumption coefficient in the database. Path monitoring system.

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