JP2006162093A - Comfortable value control method and comfortable value control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a comfortable value control method and a comfortable value control system, capable of efficient operation by grasping the energy reduction effect, by calculating the energy reduction ratio when changing a comfortable value of a present state to a comfortable value being a target. <P>SOLUTION: In this comfortable value control method, a measuring apparatus 4 respectively measures and detects the temperature, humidity, the radiation temperature and CO<SB>2</SB>being an input variable to a predetermined operation expression for calculating the comfortable value (a PMV value). A setting means 7 sets a value of an element (an air current speed, a clothing wearing quantity and an activity quantity) for calculating the comfortable value by using an image screen of an input terminal 1. An operation processing means 8 determines the comfortable value (the PMV value) using the predetermined operation expression from measuring data 5 and an element value set by the setting means 7. This operation processing means 8 determines an adjusting value of the air-conditioning temperature for changing the calculated comfortable value to the target comfortable value and determines the energy reduction ratio corresponding to the adjusting value. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a comfort value management method and a comfort value management system for appropriately managing the comfort level of air conditioning in a room.

In general, in an office room, department store hall, or in a hospital room in a building, the indoor environment is controlled to a comfortable state by an air conditioning system. Currently, the indoor comfort level is measured based on the air environment measurement (such as periodic measurement of CO ₂ concentration and measurement of ventilation in a building) and the actual temperature and humidity in the room. It was a trial calculation.

  By the way, in recent years, a comfort level called PMV has been used as an indication of indoor comfort in such an air-conditioning environment, and proposals regarding air-conditioning control using this PMV value have also been made (see, for example, Patent Document 1). ).

Here, the comfort index PMV value can be derived by fitting the values of six elements of temperature, humidity, radiation temperature, airflow velocity, human activity, and human clothes to Fanger's comfort equation. That is, the feeling of “hot, just right, cool” depends on the above six factors, and the comfort level is obtained based on these. If this PMV value can be set to “0”, about 95% of people feel comfortable, but in general, the PMV value is controlled to fall within the range of “−3” to “+3”.
JP-A-5-306830

  Controlling the air conditioning equipment using the PMV value as described above has been conventionally performed. However, it is sufficiently considered how to efficiently use the control based on the PMV value while reducing energy. It wasn't.

  The purpose of the present invention is to calculate the energy reduction rate when changing the current comfort value to the target comfort value, thereby grasping the energy reduction effect and enabling comfortable operation It is to provide a method and a comfort value management system.

  The comfort value management method according to the present invention detects an input variable for each of the above arithmetic expressions including the temperature at a predetermined point in the room with respect to the arithmetic expression for calculating the comfort value. Using a necessary preset element value, a comfortable value is obtained by the calculation formula, and an adjustment value of the air conditioning temperature necessary for changing the obtained comfortable value to a preset target comfortable value is obtained. An energy reduction rate corresponding to the obtained temperature adjustment value is obtained using a preset energy reduction rate per temperature, and energy saving judgment is made by introducing comfortable control based on the obtained reduction rate. To do.

  Further, in the present invention, an input variable for the arithmetic expression including temperatures at a plurality of points in the room is detected with respect to the arithmetic expression for calculating the comfort value, and the input variable and a necessary value for the comfort value calculation are detected in advance. A comfort value at each point is obtained by the arithmetic expression using the set element value, and a comfort reference value is selected from the obtained comfort values at each point according to a planned standard. An adjustment value of the air conditioning temperature necessary for changing the value to a preset target comfort value is obtained, and an energy reduction rate per preset temperature is used to calculate the energy corresponding to the obtained temperature adjustment value. A reduction rate may be obtained, and energy saving judgment may be made by introducing comfortable control based on the obtained reduction rate.

  Furthermore, in the comfort value management method of the present invention, the comfort value at each point is obtained a plurality of times over time, and the comfort reference value is obtained from the comfort value at each point, with the average value of these multiple times as the comfort value for each point. You may ask for it.

  In the comfort value management system of the present invention, an arithmetic expression for calculating a comfort value is preset, and an input variable for the above arithmetic expression including temperature is detected by a measuring instrument provided at a predetermined point in the room, and this input is detected. Using a variable and a preset element value necessary for calculating a comfort value, a comfort value calculating means for calculating a comfort value by the calculation formula, and changing the determined comfort value to a preset target comfort value A reduction rate calculating means for obtaining an adjustment value of the air-conditioning temperature necessary for the adjustment and obtaining an energy reduction rate corresponding to the obtained temperature adjustment value using a preset energy reduction rate per temperature It is characterized by that.

  Further, in the comfort value management system of the present invention, the measuring devices are provided at a plurality of points in the room, and the comfort value calculation means is set in advance for calculating the input variables measured at each point and the comfort values. The comfort value at each point is obtained using the obtained element value, and the reduction rate calculating means selects the comfort standard value according to the scheduled standard from the obtained comfort values at each point, and calculates the comfort value. Obtain an adjustment value of the air conditioning temperature necessary to change the reference value to a preset target comfort value, and use the energy reduction rate per preset temperature to obtain the energy corresponding to the obtained temperature adjustment value It is also possible to obtain a reduction rate.

  According to the present invention, the adjustment value of the air conditioning temperature for changing the current comfort value calculated based on the indoor measurement value to the preset target comfort value is obtained, and the energy reduction rate according to this adjustment value is obtained. Since the calculation is performed, it is possible to grasp the effect of energy reduction and operate the comfortable comfort control efficiently.

  Hereinafter, an embodiment of a comfort value management system according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the overall configuration of the comfort value management system. Reference numeral 1 denotes an input terminal having a display function, which can display coordinate data 2 representing a planar shape of a room that is a comfortable value management target. Measuring devices 4 for detecting temperature and humidity are provided at a plurality of points in the room. These measuring devices 4 detect input variables for a predetermined arithmetic expression for calculating a comfort value (PMV value), and detect a radiation temperature, CO _{2 and the} like in addition to the temperature and humidity described above. Reference numeral 3 denotes measurement point coordinate data. Each measurement point coordinate in the room in which the measuring device 4 is installed is stored and displayed on the display surface of the input terminal 1 together with the coordinate data 2 representing the indoor plane shape.

  Reference numeral 5 denotes measurement data, which stores measurement values obtained by the measuring device 4 at each measurement point together with the measurement point coordinate data 3. The data processing means 6 has a function of performing data processing by associating the input terminal 1, the measurement point data 3, the measuring device 4, and the measurement data 5 with each other.

  Reference numeral 7 denotes element value setting means for setting values of elements (airflow velocity, clothes amount, activity amount, etc.) for calculating a comfort value using the screen of the input terminal 1. An arithmetic processing unit 8 obtains a comfortable value (PMV value) from the measured data 5 and the element value set by the setting unit 7 by a predetermined arithmetic expression. Further, as will be described later, the arithmetic processing means 8 obtains an adjustment value of the air conditioning temperature for changing the calculated comfort value to the target comfort value, and obtains an energy reduction rate corresponding to the adjustment value.

  That is, the arithmetic processing means 8 uses the measured values from the measuring devices provided at a plurality of points in the room and the element values set in advance, and calculates the comfort value at each point in the room using a predetermined calculation formula. An air conditioning temperature adjustment value required to change the comfort value to a preset target comfort value is obtained while functioning as a calculation means, and the calculated value is obtained using a preset energy reduction rate per temperature. It also functions as a reduction rate calculation means for obtaining a reduction rate of energy corresponding to the temperature adjustment value.

  The PMV value and the energy saving rate (reduction rate) data 9 thus obtained are stored in a database.

  FIG. 2 schematically shows the relationship between the input terminal 1 and the plane coordinate data 2 and the measurement point data 3 in the target room displayed on the screen.

  2a shows the plane coordinate data 2 as a data table, which is input using the screen of the input terminal 1. That is, the screen of the display device 1 is plotted with a pen or the like, the corners of the planar shape in the target room are represented by points (x, y coordinates), and the data is input as connected with lines, and the data is represented as planar coordinates. Is stored as a data table 2a. A screen displaying the planar shape in the target room is referred to as a coordinate screen 1A.

  3a shows the measurement point coordinates 3 as a data table, and points a to g in the room where the measuring instrument 4 is installed are set by x and y coordinates, respectively. It is displayed on the screen on which the target room shape is displayed. This is a measurement point plot screen 1B. Measurement and recording data can be displayed by selecting a point and specifying a measurement item on the measurement point plot screen 1B.

That is, first, the mesh-like coordinate screen 1 </ b> A is displayed on the input terminal 1. Draw the shape of the room to be measured on the screen. The coordinate data of the drawn figure is stored as the data table 2a of the plane coordinate data 2. Plan view display and correction can be performed from the data table 2a as required. Further, the measurement points a to g are plotted on the screen 1B, and the temperature, humidity, air flow velocity, radiation temperature, CO _{2 and the} like are actually measured at that place. The coordinates of each measurement point ag are stored as a data table 3a. Further, the measurement data is made into a data table like a measurement data totaling table 5a shown in FIG.

  FIG. 3 shows a relationship between an example of counting measurement results at each point, which is an input variable of the PMV calculation formula, a setting state of element values necessary for calculating the PMV value, and a PMV value calculation state at a predetermined point based on them. Represents.

In FIG. 3, reference numeral 5a denotes a measurement data summary table, and values of temperature, humidity, CO ₂ , and illuminance (input variables of the PMV arithmetic expression) measured by the measuring device 4 at a point a in the target room over time (FIG. 3). In this example, the data is counted every 30 minutes).

  Reference numeral 7a denotes a set value table, which summarizes the values of the elements set by the setting means 7 shown in FIG. That is, values that can be set for the amount of activity, the amount of clothes, and the airflow speed, which are elements necessary for calculating the PMV value, and the target comfort value (PMV value) are collected.

  For example, regarding the amount of activity, “office work” assuming an office in a building, “walking” assuming a walking environment such as in a department store, and “sleeping” assuming a sleeping environment in a hospital, etc. are prepared, respectively. Select and set the applicable room. Moreover, about the amount of clothes, the value (0.7-1.2) which assumed comparatively thick clothes from thin clothes, and about the airflow speed, the airflow speed (0.7-1.5) which can ventilate indoors, Each is prepared and selected according to the environment in the target room. Furthermore, as the target comfort value, a value (−0.4 to 0.4) in a range in which no one feels uncomfortable is prepared, and is selected and set according to the use in the target room.

  That is, among the six elements necessary for calculating the comfort index (PMV value), input variables such as temperature, humidity, and radiation temperature use measured values, and other element values such as activity, clothing, and airflow velocity. Uses a setting screen that displays the setting value table 7a to select and use a value that is in the target room.

  9a is a calculation result totaling table, which is shown in FIG. 1 using measured values (input variables) totaled in the measurement data totaling table 5a and values (element values) set using the set value table 7a. The results calculated by the calculation processing means 8 are collected.

  For example, it is assumed that each element value is set to a clothing amount: 0.7, an airflow velocity: 1.0, and a target PMV value: 0.3 using the setting value table 7a. The result of calculation using the set value and the value aggregated in the measurement data aggregation table 5a is the value shown in the calculation result aggregation table 9a. That is, the temperature in the target room at time 9:00 at point a is 25.9 ° C., the radiation temperature is 26.2 ° C., and the humidity is 52%, and the current comfortable value obtained by PMV calculation based on these is 0. .27.

  Here, since the target comfort value is 0.3, there is a difference from the current comfort value of 0.27. Thus, a low current comfort value is a state in which the user feels cold with respect to the target comfort level, and when the air conditioning for the room is cooling, it means that the cooling is too effective. Therefore, in order to obtain the target comfort level, it is necessary to raise the air conditioning temperature, which means that the energy required for cooling can be reduced.

  Therefore, an energy reduction rate that can be reduced by air conditioning control to achieve the desired comfort level is obtained. That is, the target comfort value is known, and values other than the temperature that realizes this target comfort value (referred to as the target temperature) are also known. Therefore, the value of the target temperature is calculated by calculating back the arithmetic expression for obtaining the PMV value. Desired. The difference between the target temperature and the measured current temperature is an adjustment value of the air conditioning temperature necessary to change the current comfortable value to the target comfortable value. If the adjustment temperature is, for example, 0.45 ° C. and the energy reduction rate required to change the temperature by 1 ° C. is 10%, the reduction rate in this case is 4.5.

  In the measured value data summary table 5a, the measured values are aggregated over time (every 30 minutes), so the current comfortable values are calculated every 30 minutes, and the average of these values is taken, and the highest and lowest values are calculated. Ask.

  As shown in FIG. 2, the measurement points in the target room include points b to g in addition to the above-described point a. Therefore, the current comfort value is calculated for each of these points a to g using a PMV arithmetic expression. The comfort values of these points a to g are displayed in a distribution chart as shown in FIG. 4 (solid broken line). In other words, the relationship between the current comfort values of the points a to g with respect to the target comfort value: 0.3 is displayed in a graph.

  In this embodiment, since the current comfortable value is obtained every 30 minutes at each point ag, the current comfortable value at each point ag shown in FIG. 4 is a plurality of current values calculated every 30 minutes. Use the average comfort value. However, if the current comfortable value of a specific point changes greatly over time due to structural reasons in the target room, taking an average value is not very meaningful. Therefore, for example, the current comfortable value at the most effective time determined from past cases may be selected, and this may be used as the current comfortable value of each point a to g shown in FIG.

  Thus, since the present comfortable value differs for every some points ag, it is difficult to make all the points into a target comfortable value. Therefore, the comfort standard value is selected from the current comfort values for each of the points a to g according to the scheduled standard. For example, the highest comfort value (point f) among the current comfort values of the points a to g is set as the comfort reference value. In the comfort control, the air conditioning equipment is controlled so that the comfort standard value becomes the target comfort value, and the reduction rate based on the comfort standard value becomes the energy reduction rate in the comfort control.

  In FIG. 4, the broken broken line represents the comfort value distribution of each point ag after the comfort control. After the comfort control, the comfort value of the point f coincides with the target comfort value and approaches the target comfort value of other points.

  In this way, with respect to the arithmetic expression for calculating the comfort value (PMV value), first, various measured values including the temperatures at a plurality of points a to g in the room (input variables for the arithmetic expression) are detected. Moreover, the value of the element required in order to calculate a comfortable value is preset. Then, using these input variables and the set element values, comfort values at the respective points a to g are obtained by the arithmetic expressions.

  Next, a comfort standard value is selected from the calculated comfort values of the points a to g according to a predetermined standard (for example, the highest value). And the adjustment value of air-conditioning temperature required for the comfort control which changes this comfort reference value to the preset target comfort value is calculated | required. For this temperature adjustment value, an energy reduction rate corresponding to the temperature adjustment value is obtained using a preset energy reduction rate per temperature.

  Energy saving judgment is made by introducing comfortable control based on the required reduction rate.

  That is, the present comfortable value is obtained, and the reduction rate at the time of introducing comfortable control is calculated based on the present comfortable value, so that the current indoor condition can be grasped and it can be determined whether or not energy saving is possible.

  In the above embodiment, a plurality of points a to g are set in the room, and the current comfort level is calculated for each of these points a to g. It is good also as one place. In this case, the current comfortable value at one point may be calculated, and the reduction rate when the comfortable control is introduced may be calculated based on the current comfortable value.

  The above system can be mounted not only on a dedicated measuring instrument but also mounted on a notebook computer or PDA.

  In this way, the indoor environment is made into a database with a flat image without using manual editing separately, and comfortable values are automatically calculated, thereby reducing labor, improving manageability, and simplifying calculation of reduction effects. Is possible.

1 is a system configuration diagram showing an embodiment of a comfort value management system according to the present invention. It is a schematic diagram explaining operation | movement of one Embodiment same as the above. It is a schematic diagram explaining operation | movement of the characteristic part in one Embodiment same as the above. It is a graph explaining operation | movement of one Embodiment same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coordinate display input terminal 2 Plane coordinate data 3 Measuring store coordinate data 4 Measuring instrument 5 Measurement data 7 Setting means 8 Arithmetic processing means

Claims (5)

For the calculation formula for calculating the comfort value, an input variable for the calculation formula including the temperature at a predetermined point in the room is detected, and the input variable and a preset element value necessary for the comfort value calculation To find a comfortable value by the above formula,
An adjustment value of the air conditioning temperature necessary for changing the obtained comfort value to a preset target comfort value is obtained, and the obtained temperature adjustment value is obtained using a preset energy reduction rate per temperature. Find the corresponding energy reduction rate,
A comfort value management method characterized in that energy saving judgment is made by introducing comfort control based on the required reduction rate. For the calculation formula for calculating the comfort value, an input variable for the above calculation formula including temperatures at a plurality of points in the room is detected, and the input variable and a preset element value necessary for the comfort value calculation , Respectively, to obtain a comfort value at each point by the arithmetic expression,
From the obtained comfort value of each point, select a comfort reference value according to a scheduled standard, and obtain an adjustment value of the air conditioning temperature necessary to change this comfort standard value to a preset target comfort value, Using a preset energy reduction rate per temperature, obtain an energy reduction rate corresponding to the obtained temperature adjustment value,
A comfort value management method characterized in that energy saving judgment is made by introducing comfort control based on the required reduction rate.   The comfort value at each point is obtained a plurality of times over time, and the comfort standard value is obtained from the comfort value at each point, with the average value of the plurality of times as a comfort value at each point. Comfort value management method. Calculation formulas for calculating comfort values are preset, and input variables for the above calculation formulas including temperature are detected by a measuring instrument provided at a predetermined point in the room. Necessary for calculating these input variables and comfort values. Comfortable value calculation means for obtaining a comfortable value by the calculation formula using a preset element value,
An adjustment value of the air conditioning temperature necessary for changing the obtained comfort value to a preset target comfort value is obtained, and the obtained temperature adjustment value is obtained using a preset energy reduction rate per temperature. A reduction rate calculating means for obtaining a corresponding energy reduction rate;
Comfort value management system characterized by having The measuring instrument is provided at a plurality of points in the room, and the comfort value calculation means uses the input variables measured at each point and the preset element values necessary for calculating the comfort value. Find comfort values for each
The reduction rate calculation means selects a comfort standard value according to a predetermined standard among the calculated comfort values of each point, and air conditioning necessary for changing the comfort standard value to a preset target comfort value. The comfort value according to claim 4, wherein an adjustment value of temperature is obtained, and an energy reduction rate corresponding to the obtained temperature adjustment value is obtained using a preset energy reduction rate per temperature. Management system.

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