JP4509755B2 - Comfort value management method and comfort value management system - Google Patents

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 based on the air environment measurement (such as periodic measurements of CO ₂ concentration and ventilation measurement in buildings) and the actual temperature and humidity in the room. It was a trial calculation.

  By the way, recently, a degree of comfort called PMV has been used as an expression of indoor comfort in such an air-conditioning environment, and proposals relating to air-conditioning control using this PMV value have also been made (for example, see Patent Document 1). ).

Here, the comfort index PMV value can be derived by applying the values of six elements of temperature, humidity, radiation temperature, airflow velocity, human activity, and human clothing 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.

Comfort value management method according to the invention, with respect to an arithmetic expression for calculating the comfort value, the input variables respectively detected for the arithmetic expression including a temperature at a predetermined point in the comfort control introduction target chamber, the input variables and comfort value The air conditioning temperature required to obtain the current comfortable value by the calculation formula using the preset element value necessary for the calculation and to change the obtained current comfortable value to the preset target comfortable value Using the energy reduction rate per temperature set in advance, the energy reduction rate corresponding to the obtained temperature adjustment value is obtained, and energy saving judgment is made by introducing comfortable control based on the obtained reduction rate. It is characterized by performing.

Further, in the present invention, an input variable for the arithmetic expression including temperatures at a plurality of points in the comfort control introduction target room is detected with respect to the arithmetic expression for calculating the comfort value, and the input variable and the comfort value are calculated. Using the predetermined element values required for the current value, the current comfortable value at each point is obtained by the calculation formula, and the comfortable reference value is determined according to the planned standard from the obtained current comfortable value at each point. Select an air conditioning temperature adjustment value necessary to select and change this comfort reference value to a preset target comfort value, and use the energy reduction rate per preset temperature to calculate the calculated temperature adjustment An energy reduction rate corresponding to the value may be obtained, and energy saving judgment by introducing comfortable control may be performed based on the obtained reduction rate.

Furthermore, in the comfort value management method of the present invention, the current comfort value at each point is obtained a plurality of times over time, and the average value for these multiple times is used as the current comfort value for each point, and the comfort value is determined from the current comfort value at each point. A reference value may be obtained.

The comfort value management system of the present invention includes a measured value storage means for storing a measured value including a temperature measured at a predetermined point in a comfort control introduction target room, and a comfort value calculation of the predetermined point in the comfort control introduction target room. Comfort value for calculating the current comfortable value before the introduction of comfortable control based on the element value setting means for setting the required element value, the measured value stored in the measured value storage means and the element value set in the element value setting means Calculate the adjustment value of the air conditioning temperature necessary to change the current comfort value calculated by the calculation means and the comfort value calculation means to the target comfort value after the introduction of comfort control, and calculate the energy reduction rate corresponding to this adjustment value. An energy reduction rate calculating means for calculating is provided.

Further, in the comfort value management system of the present invention, the measuring instruments are provided at a plurality of points in the comfort control introduction target room, and the comfort value calculation means is necessary for calculating the input variable measured at each point and the comfort value. A current comfortable value at each point is obtained using a predetermined element value, and the reduction rate calculating means calculates a comfortable reference value according to a scheduled standard among the obtained current comfortable values at each point. To obtain the adjustment value of the air conditioning temperature necessary to change this comfort standard value to the target comfort value after the introduction of comfort control set in advance, and using the energy reduction rate per preset temperature, The energy reduction rate corresponding to the obtained temperature adjustment value may be obtained.

  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 with respect to a predetermined arithmetic expression for calculating a comfort value ( such as a PMV value), and detect a radiation temperature, CO _{2 and the} like in addition to the above-described temperature and humidity. 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 ( such as a PMV value) from the measurement data 5 and the element value set by the setting unit 7 using 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 values of target comfort values ( such as PMV values) 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.

In other words, among the six elements necessary for calculating the comfort index (PMV value, etc. ), input variables such as temperature, humidity, and radiation temperature use measured values, and other elements such as the amount of activity, the amount of clothes, and the airflow velocity. For the value, a setting screen that displays the setting value table 7a is used 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 comfortable value of each point ag with respect to the target comfortable 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.

Thus, with respect to the arithmetic expression for calculating a comfortable value (PMV value etc. ), first, various measured values including the temperatures at a plurality of points a to g in the room (input variables for the above arithmetic expression) are respectively 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, input variables for the above calculation formula including the temperature at a predetermined point in the comfort control introduction target room are respectively detected, and this input variable and the preset necessary values for calculating the comfort value are set. Using the calculated element value, the present comfortable value is obtained by the above formula,
The adjustment value of the air conditioning temperature necessary for changing the obtained current comfortable value to the preset target comfortable value is obtained, and the obtained temperature adjustment value is obtained using the energy reduction rate per preset temperature. To obtain the energy reduction rate equivalent to
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, input variables for the above calculation formula including temperatures at a plurality of points in the comfort control introduction target room are detected, respectively. Using the calculated element value, the current comfortable value at each point is determined by the calculation formula,
The comfort standard value is selected from the present comfortable values of the respective points determined according to the scheduled standard, and the adjustment value of the air conditioning temperature necessary for changing the comfort standard value to the preset target comfort value is obtained. Then, 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 current comfortable value at each point is obtained a plurality of times over time, and the comfort standard value is obtained from the current comfortable value of each point, with the average value of these multiple times being the current comfortable value of each point. The comfort value management method according to 2. A measured value storage means for storing a measured value including a temperature measured at a predetermined point in the comfort control introduction target room;
An element value setting means for setting an element value necessary for calculating a comfort value at a predetermined point in the comfort control introduction target room;
Comfort value calculation means for calculating a current comfortable value before the introduction of comfort control based on the measurement value stored in the measurement value storage means and the element value set in the element value setting means;
Energy reduction that calculates the air conditioning temperature adjustment value required to change the current comfort value calculated by the comfort value calculation means to the target comfort value after the introduction of comfort control, and calculates the energy reduction rate corresponding to this adjustment value Rate calculating means;
Comfort value management system characterized by having The measuring devices are provided at a plurality of points in the comfort control introduction target room, and the comfort value calculation means uses input variables measured at each point and preset element values necessary for calculating the comfort value. , Find the current comfort value at each point,
The reduction rate calculation means selects a comfortable reference value according to a predetermined standard among the obtained current comfortable values of each point, and changes the comfortable reference value to a target comfortable value after introduction of comfortable control set in advance. The air conditioning temperature adjustment value necessary for the adjustment is obtained, and the energy reduction rate corresponding to the obtained temperature adjustment value is obtained using a preset energy reduction rate per temperature. 4. Comfort value management system according to 4.

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