JP2012251709A - Method and device for controlling air-conditioning operation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To intermittently operate air-conditioning to prevent the concentration of formaldehyde from exceeding a concentration guideline value during an actual operation of air-conditioning.SOLUTION: Before starting an actual operation of air-conditioning, a device for continuously measuring formaldehyde (the device that can continuously measure formaldehyde as far as about one week of a measurement period) is installed in an air-conditioning target space, and operated to obtain a data of changes in the formaldehyde concentration with time for several days under various conditions of air-conditioning. From the temporal changes in the formaldehyde concentration, a generation amount W of formaldehyde and a number N of ventilation times are obtained under each condition of air-conditioning in the air-conditioning target space and correlated with each other. For example, in an actual operation under a condition 3 of air-conditioning (no air-conditioning), a simulation value C(t)of the formaldehyde concentration is calculated on the basis of on a generation amount W3 of formaldehyde and a ventilation times N3; and if C(t)reaches near a concentration guideline value Cth, the operation is switched into a condition 2 of air-conditioning (carrying out air-conditioning). Under the condition 2, a simulation value C(t)of the formaldehyde concentration is similarly calculated; and if the simulation value C(t)reaches near 0, the operation is switched into the condition 3 of air-conditioning.

Description

  The present invention relates to an air-conditioning operation control method and apparatus for switching air-conditioning conditions during actual operation in an air-conditioned space based on the formaldehyde concentration.

  In recent years, intermittent operation of air conditioning has been proposed in houses and the like in order to save energy (hereinafter abbreviated as energy saving) (see Non-Patent Document 1, for example). In this case, as an index for performing intermittent operation, control by temperature is performed, and furthermore, monitoring of CO2 is performed as an evaluation of air quality and feedback to intermittent operation (for example, a case of Non-Patent Document 2). 5 and 6). In this case, during the actual operation, the CO2 concentration is continuously measured, and the air conditioning intermittent operation is performed so that the CO2 concentration does not exceed the concentration guide value.

  However, various substances exist in the room in addition to CO2. Of the volatile organic substances present in the room, formaldehyde is a carcinogenic substance for humans and should not be exposed as much as possible. However, it is used for building materials, furniture, clothing, etc. It can be said that the living space is impossible.

  Since the source of CO2 is humans and combustion, and formaldehyde is building materials, furniture, clothing, etc., formaldehyde and CO2 do not behave in the same manner in the indoor environment, and the timing of high concentration is different. For this reason, intermittent operation of air conditioning performed by monitoring CO2 does not always work effectively for controlling the formaldehyde concentration.

  On the other hand, from the viewpoint of monitoring, CO2 can be continuously monitored with an infrared monitoring converter (for example, see Non-Patent Document 3) or a solid electrolyte sensor (for example, see Non-Patent Document 4). There are few small devices that can be monitored.

  At present, there are devices that can continuously measure the concentration of formaldehyde for a period of about one week (see, for example, Non-Patent Document 5), but a small-sized device that can continuously measure the concentration of formaldehyde for several months. There is no device.

“Air-conditioner control system”, [Search May 25, 2011], Internet <URL: http://www2.ocn.ne.jp/~energies/atm/control2.html> "Energy saving example of office building", [Search May 25, 2011], Internet <URL: http://www.eccj.or.jp/office_bldg/04.html> “CO2 Converter”, [Search May 25, 2011], Internet <URL: http://www.vaisala.co.jp/instruments/products/gmd20_gmw22.html> “CO2 sensor”, [searched on May 25, 2011], Internet <URL: http://www.azbil.com/jp/product/ba/bas/sensor_iaq.html> Maruo, Nakamura; Indoor Environment 13 (2010) 163-172.

  As described above, currently there are devices that can continuously measure the concentration of formaldehyde within a period of about one week, but there are no small devices that can continuously measure the concentration of formaldehyde for several months. . For this reason, as in the case of CO2, the concentration of formaldehyde is continuously measured during actual operation, and the intermittent operation of air conditioning cannot be performed so that the concentration of formaldehyde does not exceed the concentration guideline value.

  The present invention has been made to solve such a problem, and the object is to perform intermittent operation of air conditioning so that the concentration of formaldehyde does not exceed the concentration guideline value during actual operation. An object of the present invention is to provide an air-conditioning operation control method and apparatus that can be used.

  In order to achieve such an object, an air-conditioning operation control method according to the present invention (Claim 1) continuously determines a concentration of formaldehyde in an air-conditioned space before starting actual operation for a predetermined period under a predetermined air-conditioning condition. A formaldehyde concentration measurement step to be measured, a parameter calculation step to calculate the amount of formaldehyde generated and the number of ventilations in a predetermined air-conditioning condition in the air-conditioned space based on the measured formaldehyde concentration during a predetermined period; A formaldehyde concentration simulation step for simulating the concentration of formaldehyde during actual operation under predetermined air conditioning conditions in the air-conditioned space based on the amount of formaldehyde generated and the number of ventilations, and an actual condition in the air-conditioned space based on the simulated formaldehyde concentration Switching air-conditioning conditions during operation Characterized in that it comprises a conditioning condition switching step.

  In the present invention, before the actual operation is started, the concentration of formaldehyde in the air-conditioned space is continuously measured for a predetermined period (for example, several days) under a predetermined air-conditioning condition A (for example, no air conditioning). In this case, it is possible to use the apparatus shown in Non-Patent Document 5 (an apparatus capable of continuously measuring the concentration of formaldehyde for about one week) for measuring the concentration of formaldehyde.

  Based on the measured formaldehyde concentration, the amount of formaldehyde generated and the number of ventilations in the air-conditioned condition A in the air-conditioned space are calculated, for example, by performing an analysis using a mass balance equation. Based on the calculated amount of formaldehyde generated and the number of ventilations, the concentration of formaldehyde in the air-conditioned space is simulated during the actual operation under the air conditioning condition A, and the air conditioning condition is determined based on the simulated formaldehyde concentration. Switch.

  For example, when the simulated formaldehyde concentration may exceed the concentration guideline value, the air conditioning condition is switched to the air conditioning condition B (with air conditioning) to reduce the formaldehyde concentration. In the air conditioning condition B, the concentration of formaldehyde can be simulated in the same manner as the air conditioning condition A. For example, if the simulated formaldehyde concentration reaches near 0 after switching to air conditioning condition B (with air conditioning), switching to air conditioning condition A (without air conditioning) will change the concentration of formaldehyde during actual operation. The intermittent operation of air conditioning is repeated so as not to exceed the guideline value.

  The amount of formaldehyde generated depends on the temperature. For example, if the temperature increases by 1 ° C., the amount of formaldehyde generated is 1.1 times. Therefore, in the air conditioning operation control method according to the present invention (Claim 2), the temperature in the air-conditioned space is continuously measured as the room temperature, and the calculated amount of formaldehyde generated is corrected with the measured room temperature. Based on the corrected amount of formaldehyde generated and the number of ventilations, the concentration of formaldehyde during actual operation under a predetermined air conditioning condition in the air-conditioned space is simulated. Thereby, the accuracy of the simulation of the concentration of formaldehyde can be improved.

  In addition, this invention can also be comprised as an air-conditioning operation control apparatus to which the air-conditioning operation control method mentioned above is applied. The invention according to claims 3 and 4 relates to an air-conditioning operation control device for carrying out the air-conditioning operation control method according to claims 1 and 2 described above.

  According to the present invention, the concentration of formaldehyde in the air-conditioned space before the start of actual operation is continuously measured for a predetermined period under predetermined air-conditioning conditions, and based on the measured formaldehyde concentration during the predetermined period. Calculate the amount of formaldehyde generated and the number of ventilations in the air-conditioned space under the predetermined air-conditioning conditions, and based on the calculated amount of formaldehyde generated and the number of ventilations during the actual operation under the predetermined air-conditioning conditions in the air-conditioned space Since the concentration of formaldehyde was simulated and the air conditioning conditions during actual operation in the air-conditioned space were switched based on the simulated formaldehyde concentration, the concentration of formaldehyde should not exceed the concentration guideline value during actual operation. It becomes possible to perform intermittent operation of air conditioning, energy saving and healthy It is possible to realize the air conditioner.

It is a figure (Embodiment 1) which shows the time change of the concentration of formaldehyde at the time of driving | running on each air-conditioning condition measured with the formaldehyde continuous measurement apparatus shown by the nonpatent literature 5 before starting a real driving | operation. It is a figure which shows the approximate characteristic of the time change of the density | concentration of formaldehyde created using the data of each air-conditioning condition shown by FIG. 3 is a functional block diagram of an air-conditioning operation control apparatus having a function for determining an air-conditioning operation method before starting actual operation in Embodiment 1. FIG. FIG. 3 is a functional block diagram of an air conditioning operation control device having a control function for air conditioning operation during actual operation in the first embodiment. FIG. 3 is a diagram showing a change over time of a simulation value of the concentration of formaldehyde during actual operation in the first embodiment. Change of formaldehyde concentration over time and room temperature measured with temperature measurement device when operating under each air conditioning condition measured with formaldehyde continuous measurement device shown in Non-Patent Document 5 before starting actual operation (Embodiment 2) which shows this. It is a figure which shows the approximate characteristic of the time change of the formaldehyde density | concentration created using the data of each air-conditioning condition shown by FIG. 5, and the time change of room temperature. 6 is a functional block diagram of an air-conditioning operation control apparatus having a function for determining an air-conditioning operation method before starting actual operation in Embodiment 2. FIG. FIG. 10 is a functional block diagram of an air conditioning operation control device having a control function of air conditioning operation during actual operation in the second embodiment. It is a figure which shows the time change of the simulation value of the density | concentration of formaldehyde in the actual driving | operation in Embodiment 2, and the time change of room temperature.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following, the case where no correction based on temperature is performed is described as a first embodiment, and the case where correction based on a temperature is performed is described as a second embodiment.

[Embodiment 1: When correction by temperature is not performed]
In Embodiment 1, before the actual operation is started, the formaldehyde continuous measurement apparatus shown in Non-Patent Document 5 is installed in the air-conditioned space, and is operated under various air conditioning conditions including no air conditioning for several days. As a measurement result, for example, a time change of the concentration C of formaldehyde as shown in FIG. 1 is obtained. In this example, the operation is performed under the air conditioning condition 1, the air conditioning condition 2, the air conditioning condition 3 (no air conditioning), and the air conditioning condition 4, and the time change of the concentration C of formaldehyde during the operation is obtained.

  For each air conditioning condition, an initial concentration, an external concentration, and a volume of the air-conditioned space are set and substituted into the following mass balance equation (1). In this case, the set value of the external density is set to 0, for example.

  In this mass balance equation (1), N is the number of ventilations, V is the volume of the room (volume of the air-conditioned space), W is the amount of formaldehyde generated indoors, C0 is the external concentration (external concentration), and C1 is Indicates the initial indoor concentration (initial concentration). In the mass balance equation (1), C (t) represents the concentration of formaldehyde in the room at time t when the time when each air conditioning is started is 0 respectively.

  Then, the data of each air conditioning condition shown in FIG. 1 is fitted using the mass balance equation (1) to create an approximate characteristic of the temporal change in formaldehyde concentration as shown by the solid line in FIG. The formaldehyde indoor generation amount W and ventilation frequency N under each air conditioning condition are calculated from the approximate characteristics of the formaldehyde concentration over time, and the formaldehyde indoor generation amount W and ventilation frequency N are associated with each air conditioning condition. . Moreover, power consumption PW in each air-conditioning condition is measured.

  Then, based on the indoor generated amount W of formaldehyde under each air-conditioning condition, the number of ventilations N, and the power consumption PW, the air-conditioning operation under the actual operation of the air-conditioning operation method under the condition of low power consumption and low formaldehyde concentration Decide as a method.

  For example, in FIG. 2, it is understood that some air conditioning is necessary because the formaldehyde concentration is higher than the concentration guide value Cth under the air conditioning condition 3 (without air conditioning). For the air conditioning operation for that purpose, (1) the method of continuously operating the air conditioning condition 1 and (2) the operation of the air conditioning condition 2 immediately before the concentration of formaldehyde exceeds the concentration guideline value Cth under the air conditioning condition 3 (no air conditioning). The operation is continued until the concentration of formaldehyde becomes close to 0, and then the air conditioning is stopped to obtain the air conditioning condition 3. The operation of the air conditioning condition 2 is resumed immediately before the formaldehyde concentration exceeds the concentration guideline value Cth again. A method is conceivable.

  Since the method (1) performs air conditioning continuously, the power consumption is larger than the method (2). Therefore, it can be seen that the method (2), that is, the method of intermittently operating the air conditioning between the air conditioning condition 3 and the air conditioning condition 2, is a method for realizing energy saving. In this example, the method of performing intermittent operation of air conditioning between the air conditioning condition 3 and the air conditioning condition 2 is determined as the air conditioning operation method during actual operation.

  FIG. 3 shows a functional block diagram of the air-conditioning operation control apparatus 100 having the function of determining the air-conditioning operation method before starting the actual operation. The air-conditioning operation control device 100 is realized by hardware including a processor and a storage device, and a program that realizes various functions as a control device in cooperation with these hardware, and an air-conditioning operation control unit (actual operation start) Previous air conditioning operation control unit) 1, power consumption measurement unit 2, parameter calculation unit 3, association storage unit 4, air conditioning operation method determination unit 5 during actual operation, and formaldehyde continuous measurement device 6 Yes.

  In the air conditioning operation control device 100, the continuous formaldehyde measuring device 6 is a small device shown in Non-Patent Document 5, and can continuously measure the concentration of formaldehyde within a period of about one week. This formaldehyde continuous measuring device 6 is installed in the air-conditioned space 200.

  In the system using this air-conditioning operation control apparatus 100, before starting the actual operation, a command is sent from the air-conditioning operation control unit 1 to the air-conditioning equipment 201, and for several days, the air-conditioning condition 1, the air-conditioning condition 2, and the air-conditioning condition 3 (No air conditioning), let the air condition 4 be operated.

  During this operation, the air-conditioning operation control unit 1 acquires the concentration C of formaldehyde continuously measured by the formaldehyde continuous measuring device 6, and the acquired air-conditioning condition 1, air-conditioning condition 2, air-conditioning condition 3 (no air-conditioning), air-conditioning The concentration C of formaldehyde under condition 4 is sent to the parameter calculation unit 3.

  The parameter calculation unit 3 sets the initial concentration C1, the external concentration C0, and the volume V of the air-conditioned space 200 for each air conditioning condition, and substitutes them into the mass balance equation (1). Fitting using the balance equation (1), an approximate characteristic of the formaldehyde concentration over time was created, and the amount of formaldehyde generated indoors under each air-conditioning condition based on the approximate characteristics of the formaldehyde concentration over time. Calculate W and ventilation frequency N.

  In this example, the parameter calculation unit 3 calculates the indoor generation amount of formaldehyde under the air conditioning condition 1 as W1, calculates the ventilation frequency as N1, sets the indoor generation amount of formaldehyde under the air conditioning condition 2 as W2, and sets the ventilation frequency as N2. Calculate as Moreover, the indoor generation amount of formaldehyde under the air conditioning condition 3 is calculated as W3, the number of ventilations is calculated as N3, the indoor generation amount of formaldehyde under the air conditioning condition 4 is calculated as W4, and the ventilation frequency is calculated as N4.

  Then, the parameter calculation unit 3 sends the indoor formaldehyde generation amount W and the ventilation frequency N under the calculated air conditioning conditions to the storage unit 4, and the air conditioning conditions, the indoor generation amount W of formaldehyde and the ventilation frequency N are obtained. Relate to remember.

  In addition, the air conditioning operation control unit 1 acquires the power consumption PW under each air conditioning condition from the power consumption measuring unit 2 during operation under the air conditioning condition 1, the air conditioning condition 2, the air conditioning condition 3 (no air conditioning), and the air conditioning condition 4. Then, the acquired power consumption PW under each air conditioning condition is sent to the association storage unit 4, and each air conditioning condition and the power consumption PW are stored in association with each other. In this case, the power consumption under the air conditioning condition 1 is stored as PW1, the power consumption under the air conditioning condition 2 is stored as PW2, the power consumption under the air conditioning condition 3 is stored as PW3, and the power consumption under the air conditioning condition 4 is Stored as PW4.

  The air-conditioning operation method determination unit 5 during actual operation is based on the contents stored in the association storage unit 4, and the air-conditioning operation under actual operation is performed under the condition that the power consumption is low and the concentration of formaldehyde is low. Decide as a method. In this example, the method of performing intermittent operation of air conditioning between the air conditioning condition 3 and the air conditioning condition 2 is determined as the air conditioning operation method during actual operation. In this case, air conditioning condition 3 (no air conditioning) is the first rank, and air conditioning condition 2 is the second rank.

  FIG. 4 shows a functional block diagram of an air conditioning operation control apparatus 100 having a control function for air conditioning operation during actual operation. This air-conditioning operation control apparatus 100 includes a parameter acquisition unit 7, a simulation unit 8, and an air-conditioning operation control unit (air-conditioning operation control unit during actual operation) 9 in addition to the configuration described above. The simulation unit 8 includes a first simulation unit 8-1 and a second simulation unit 8-2. In this example, it is assumed that the formaldehyde concentration in the air-conditioned space 200 is zero.

  The parameter acquisition unit 7 receives the air-conditioning operation method during actual operation determined by the air-conditioning operation method determination unit 5 (FIG. 3) during actual operation, and inputs formaldehyde under each air-conditioning condition in the air-conditioning operation method during actual operation. The indoor generation amount W and the ventilation frequency N are acquired from the association storage unit 4. In this example, since the method of performing the intermittent operation of the air conditioning between the air conditioning condition 3 and the air conditioning condition 2 is input as the air conditioning operation method during the actual operation, the parameter acquisition unit 7 The generation amount W3, the ventilation frequency N3, the indoor generation amount W2 of formaldehyde under the air conditioning condition 2, and the ventilation frequency N2 are acquired from the association storage unit 4.

  Then, the parameter acquisition unit 7 sends the indoor formaldehyde generation amount W3 under the air conditioning condition 3 and the ventilation frequency N3 to the first simulation unit 8-1, and the indoor generation amount W2 of formaldehyde under the acquired air conditioning condition 2. The ventilation frequency N2 is sent to the second simulation unit 8-2.

The first simulation unit 8-1 takes in the indoor generation amount W3 of formaldehyde and the ventilation frequency N3 from the parameter acquisition unit 7 under the air conditioning condition 3, and uses the mass balance equation (1) to Calculation of the simulation value C (t) ₁ of the concentration of formaldehyde during operation is started (point t1 shown in FIG. 5). At this time, in the mass balance equation (1), the initial concentration C1 is set to 0, and the external concentration C0 and the volume V of the air-conditioned space 200 use set values.

Further, the first simulation unit 8-1 sends a command to the air conditioning operation control unit 9 simultaneously with the start of calculation of the simulation value C (t) ₁ of the formaldehyde concentration, and starts the operation under the air conditioning condition 3. In this example, since the air conditioning condition 3 is no air conditioning, if the air conditioning is performed at that time, the air conditioning is stopped.

The first simulation unit 8-1, while calculating a simulation value C (t) ₁ at a concentration of formaldehyde during operation in the air conditioning condition 3, the simulated value C (t) ₁ at a concentration of the calculated formaldehyde When the simulation value C (t) ₁ is in the vicinity of the concentration guide value Cth (in this example, C (t) ₁ ≧ Cth) (point t2 shown in FIG. 5). The simulation unit 8-2 is instructed to start simulation.

The second simulation 8-2 receives the instruction to start the simulation from the first simulation unit 8-1, and calculates the formaldehyde indoor generation amount W 2 and the ventilation frequency N 2 under the air conditioning condition 2 from the parameter acquisition unit 7. Calculation of the simulation value C (t) ₂ of the concentration of formaldehyde during operation under the air conditioning condition 2 is started using the intake and mass balance equation (1) (point t2 shown in FIG. 5). At this time, in the mass balance equation (1), the initial concentration C1 is Cth, and the external concentration C0 and the volume V of the air-conditioned space 200 are set values.

In the second simulation 8-2, simultaneously with the start of calculation of the simulation value C (t) ₂ of the formaldehyde concentration, a command is sent to the air conditioning operation control unit 9, and the operation under the air conditioning condition 3 is interrupted. The operation under the air conditioning condition 2 is started. In this case, since the air conditioning condition 3 is no air conditioning, the air conditioning under the air conditioning condition 2 is started from the state where the air conditioning is stopped.

The second simulation unit 8-2, while calculating a simulation value C (t) ₂ of the concentration of formaldehyde during operation in the air conditioning condition 2, the simulation value C (t) ₂ concentration of the calculated formaldehyde The density value 0 is compared, and when the simulation value C (t) ₂ is near the density value 0 (point t3 shown in FIG. 5), the first simulation unit 8-1 is instructed to start the simulation.

The first simulation unit 8-1 receives the simulation start instruction from the second simulation unit 8-2, and uses the mass balance equation (1) in the air conditioning condition 3 in the same manner as described above. Calculation of the simulation value C (t) ₁ of the concentration of formaldehyde during the operation is started (t3 point shown in FIG. 5). In this example, air conditioning is stopped.

The first simulation unit 8-1 sends a command to the air-conditioning operation control unit 9 during actual operation simultaneously with the start of calculation of the simulation value C (t) ₁ of the concentration of formaldehyde, and the air-conditioning condition 2 until then The operation is interrupted, and the operation under the air conditioning condition 3 is started.

  Thereafter, by repeating the same operation, intermittent operation of air conditioning is repeated between the air conditioning condition 3 and the air conditioning condition 2 so that the formaldehyde concentration does not exceed the concentration guideline value Cth during the actual operation. Thereby, the concentration of formaldehyde is kept low, and energy-saving and healthy air conditioning is realized.

  In the first embodiment, the difference between the indoor temperature and the outdoor temperature is small, and it is not necessary to consider the temperature dependence of the amount of formaldehyde generated. However, when the temperature difference is large, it is necessary to take temperature dependency into consideration.

[Embodiment 2: When correcting by temperature]
Also in the second embodiment, as in the first embodiment, before starting the actual operation, the formaldehyde continuous measurement device shown in Non-Patent Document 5 is installed in the air-conditioned space, and there is no air conditioning for several days. Operate under various air conditioning conditions. During operation under each air conditioning condition, the temperature in the air-conditioned space is continuously measured as the room temperature T.

  By the operation before the start of the actual operation, the time change of the formaldehyde concentration C and the time change of the room temperature T as shown in FIG. In this example, the operation is performed under the air conditioning condition 1 (no air conditioning) and the air conditioning condition 2, and the time change of the formaldehyde concentration C and the time change of the room temperature T during the operation are obtained.

  Then, for each air conditioning condition, an initial concentration, an external concentration, and a volume of the air-conditioned space are set and substituted into the above-described mass balance equation (1). Then, the data of each air conditioning condition shown in FIG. 6 is fitted using the mass balance equation (1) to create an approximate characteristic of the temporal change in formaldehyde concentration as shown by the solid line in FIG. The formaldehyde indoor generation amount W and the ventilation frequency N under each air conditioning condition are calculated from the approximate characteristics of the formaldehyde concentration over time, and the formaldehyde indoor generation amount W, the ventilation frequency N and the indoor temperature T for each air conditioning condition are calculated. Make an association. Moreover, power consumption PW in each air-conditioning condition is measured.

  Based on the indoor generation amount W of formaldehyde, the ventilation frequency N, the room temperature T, and the power consumption PW under each air conditioning condition, the air conditioning is performed under the condition that the power consumption is low, the formaldehyde concentration is low, and the room temperature is low. The operation method is determined as the air-conditioning operation method during actual operation.

  For example, in FIG. 7, it can be seen that, under the air conditioning condition 1 (without air conditioning), the concentration of formaldehyde is lower than the concentration guideline value Cth, so that air conditioning is not necessary. However, the indoor generation amount of formaldehyde is a function of temperature, and if the temperature rises by 1 ° C., the generation amount of formaldehyde is 1.1 times. For this reason, if the room temperature increases under the air conditioning condition 1 (no air conditioning), the concentration of formaldehyde may exceed the concentration guide value Cth.

  Therefore, by adding the condition of the indoor temperature monitored in real time to the formaldehyde generation amount obtained in advance, the formaldehyde generation amount is corrected for temperature, and the accuracy of the simulated formaldehyde concentration is increased. The air conditioning operation is performed when it is estimated that the simulation value of the concentration of formaldehyde in which the concentration is increased exceeds the concentration guideline value Cth. In this example, on the premise that temperature correction of the amount of formaldehyde generated is performed, a method of performing intermittent operation of air conditioning between the air conditioning condition 1 and the air conditioning condition 2 is determined as an air conditioning operation method during actual operation.

  FIG. 8 shows a functional block diagram of an air-conditioning operation control apparatus 100 ′ having a function for determining an air-conditioning operation method before starting actual operation. The air conditioning operation control device 100 ′ is realized by hardware including a processor and a storage device, and a program that realizes various functions as a control device in cooperation with these hardware, and an air conditioning operation control unit (actual operation) Air-conditioning operation control unit) 1 before start, power consumption measurement unit 2, parameter calculation unit 3, association storage unit 4, air-conditioning operation method determination unit 5 during actual operation, formaldehyde continuous measurement device 6, temperature And a measuring device 10.

  In the air-conditioning operation control apparatus 100 ′, the formaldehyde continuous measurement apparatus 6 is a small apparatus shown in Non-Patent Document 5 as described in the first embodiment. Concentration can be measured continuously. The temperature measuring device 10 can continuously measure the temperature for a long time. The formaldehyde continuous measuring device 6 and the temperature measuring device 10 are installed in the air-conditioned space 200.

  In the system using this air-conditioning operation control device 100 ′, before starting actual operation, a command is sent from the air-conditioning operation control unit 1 to the air-conditioning equipment 201, and air-conditioning condition 1 (no air-conditioning), air-conditioning condition for several days 2 to drive.

  During this operation, the air-conditioning operation control unit 1 acquires formaldehyde concentration C continuously measured by the formaldehyde continuous measurement device 6, and the acquired formaldehyde concentration C under the air-conditioning condition 1 (no air-conditioning) and air-conditioning condition 2. Is sent to the parameter calculation unit 3.

  The parameter calculation unit 3 sets the initial concentration C1, the external concentration C0, and the volume V of the air-conditioned space 200 for each air conditioning condition, and substitutes them into the mass balance equation (1). Fitting is performed using the balance equation (1) to create an approximate characteristic of the formaldehyde concentration over time, and the generated amount W of formaldehyde indoors under each air-conditioning condition from the approximate characteristic of the formaldehyde concentration over time. And the ventilation frequency N is calculated.

  In this example, the parameter calculation unit 3 calculates the indoor generation amount of formaldehyde under the air conditioning condition 1 as W1, calculates the ventilation frequency as N1, sets the indoor generation amount of formaldehyde under the air conditioning condition 2 as W2, and sets the ventilation frequency as N2. Calculate as

  Then, the parameter calculation unit 3 sends the indoor formaldehyde generation amount W and the ventilation frequency N under the calculated air conditioning conditions to the storage unit 4, and the air conditioning conditions, the indoor generation amount W of formaldehyde and the ventilation frequency N are obtained. Relate to remember.

  In addition, the air conditioning operation control unit 1 acquires the power consumption PW under each air conditioning condition from the power consumption measuring unit 2 during the operation under the air conditioning condition 1 (no air conditioning) and the air conditioning condition 2, and The power consumption PW is sent to the association storage unit 4, and each air conditioning condition and the power consumption PW are stored in association with each other. In this case, the power consumption under the air conditioning condition 1 is stored as PW1, and the power consumption under the air conditioning condition 2 is stored as PW2.

  In addition, the air-conditioning operation control unit 1 acquires the indoor temperature T in the air-conditioned space 200 continuously measured by the temperature measuring device 10 during the operation under the air-conditioning condition 1 (no air-conditioning) and the air-conditioning condition 2, and the acquired The room temperature T under the air conditioning condition 1 (no air conditioning) and the air conditioning condition 2 is sent to the association storage unit 4 to store each air conditioning condition in association with the room temperature T. In this case, for example, the average value of the room temperature under the air conditioning condition 1 is stored as T1, and the average value of the room temperature under the air conditioning condition 2 is stored as T2.

  Based on the contents stored in the association storage unit 4, the air-conditioning operation method determination unit 5 during actual operation actually operates the air-conditioning operation method under the conditions of low power consumption, low formaldehyde concentration, and low room temperature. It is determined as the air conditioning operation method. In this example, the method of performing the intermittent operation of air conditioning between the air conditioning condition 1 and the air conditioning condition 2 is determined as the air conditioning operation method during actual operation. In this case, air conditioning condition 1 (no air conditioning) is the first rank, and air conditioning condition 2 is the second rank.

  FIG. 9 shows a functional block diagram of an air-conditioning operation control apparatus 100 ′ having a control function for air-conditioning operation during actual operation. This air conditioning operation control device 100 ′ includes a parameter acquisition unit 7, a simulation unit 8, and an air conditioning operation control unit 9 during actual operation in addition to the above-described configuration. The simulation unit 8 includes a first simulation unit 8-1 and a second simulation unit 8-2. In this example as well, the formaldehyde concentration in the air-conditioned space 200 is assumed to be zero.

  The parameter acquisition unit 7 receives the air-conditioning operation method during actual operation determined by the air-conditioning operation method determination unit 5 (FIG. 8) during actual operation, and inputs formaldehyde under each air-conditioning condition in the air-conditioning operation method during actual operation. The indoor generation amount W, the ventilation frequency N, and the room temperature T are acquired from the association storage unit 4. In this example, since the method of performing the intermittent operation of the air conditioning between the air conditioning condition 1 and the air conditioning condition 2 is input as the air conditioning operation method during the actual operation, the parameter acquisition unit 7 The generation amount W1, the ventilation frequency N1, the indoor temperature T1, the indoor generation amount W2 of formaldehyde under the air conditioning condition 2, the ventilation frequency N2, and the indoor temperature T2 are acquired from the storage unit 4 in association with each other.

  Then, the parameter acquisition unit 7 sends the indoor generation amount W1 of formaldehyde under the acquired air-conditioning condition 1, the ventilation frequency N1, and the indoor temperature T1 to the first simulation unit 8-1, and the formaldehyde in the acquired air-conditioning condition 2 The indoor generation amount W2, the ventilation frequency N2, and the indoor temperature T2 are sent to the second simulation unit 8-2.

The first simulation unit 8-1 takes in the indoor generation amount W1 of formaldehyde under the air conditioning condition 1 from the parameter acquisition unit 7, the ventilation frequency N1, and the indoor temperature T1, and in the air-conditioned space 200 from the temperature measuring device 10. Using the indoor temperature T as an input, the ratio between the indoor temperature T and the indoor temperature T1 in the air-conditioned space 200 is obtained, and the indoor generation amount W1 of formaldehyde is corrected (temperature correction) based on this ratio. Calculation of the simulation value C (t) ₁ ′ of the concentration of formaldehyde during operation under the air conditioning condition 1 is started from the generated amount W1 and the ventilation frequency N1 using the mass balance equation (1) (shown in FIG. 10). t1 point). At this time, in the mass balance equation (1), the initial concentration C1 is set to 0, and the external concentration C0 and the volume V of the air-conditioned space 200 use set values.

In addition, the first simulation unit 8-1 sends a command to the air conditioning operation control unit 9 simultaneously with the start of calculation of the simulation value C (t) ₁ ′ of the formaldehyde concentration to start the operation under the air conditioning condition 1. . In this example, since the air conditioning condition 3 is no air conditioning, if the air conditioning is performed at that time, the air conditioning is stopped.

The first simulation unit 8-1, while calculating a simulation value C of the concentration of formaldehyde during operation in the air conditioning condition 1 (t) ₁ ', simulation value C of the concentration of the calculated formaldehyde (t) ₁ 'And the density guideline value Cth are compared, and the simulation value C (t) ₁ ' is in the vicinity of the density guideline value Cth (in this example, C (t) ₁ '≥Cth) (point t2 shown in FIG. 10). ), The second simulation unit 8-2 is instructed to start the simulation.

The second simulation 8-2 receives the instruction to start the simulation from the first simulation unit 8-1, and the indoor generation amount W2 of formaldehyde under the air conditioning condition 2 from the parameter acquisition unit 7 and the ventilation frequency N2 The room temperature T2 is taken in, and the room temperature T in the air-conditioned space 200 from the temperature measuring device 10 is input, and the ratio between the room temperature T and the room temperature T2 in the air-conditioned space 200 is obtained. The amount of formaldehyde during operation under air-conditioning condition 2 using the mass balance equation (1) from the indoor corrected amount of formaldehyde W2 and the ventilation frequency N1 after correcting the amount W2 (temperature correction) The calculation of the simulation value C (t) ₂ ′ is started (point t2 shown in FIG. 10). At this time, in the mass balance equation (1), the initial concentration C1 is Cth, and the external concentration C0 and the volume V of the air-conditioned space 200 are set values.

The second simulation 8-2 sends a command to the air conditioning operation control unit 9 simultaneously with the start of calculation of the simulation value C (t) ₂ ′ of formaldehyde concentration, and the operation under the air conditioning condition 1 until then is performed. The operation is interrupted and the operation under the air conditioning condition 2 is started. In this case, since the air conditioning condition 1 is no air conditioning, the operation under the air conditioning condition 2 is started from the state where the air conditioning is stopped.

The second simulation unit 8-2 calculates the simulation value C (t) ₂ ′ of the calculated formaldehyde concentration while calculating the simulation value C (t) ₂ ′ of the concentration of formaldehyde during operation under the air conditioning condition _2. 'And the density value 0 are compared, and when the simulation value C (t) ₂ ' is near the density value 0 (point t3 shown in FIG. 10), the first simulation unit 8-1 is instructed to start the simulation.

The first simulation unit 8-1 receives the instruction to start the simulation from the second simulation unit 8-2, and uses the mass balance equation (1) in the same manner as described above, under the air conditioning condition 1. Calculation of the simulation value C (t) ₁ ′ of the concentration of formaldehyde during the operation is started (t3 point shown in FIG. 10).

Further, the first simulation unit 8-1 sends a command to the air conditioning operation control unit 9 simultaneously with the start of calculation of the simulation value C (t) ₁ ′ of the formaldehyde concentration, and the operation under the air conditioning condition 2 until then is performed. And the operation under the air conditioning condition 1 is started. In this example, air conditioning is stopped.

  Thereafter, the same operation is repeated, so that the accuracy of simulation of formaldehyde concentration is increased during actual operation while the concentration of formaldehyde does not exceed the concentration guideline value Cth. The intermittent operation of air conditioning is repeated. Thereby, energy-saving and healthy air conditioning can be realized by keeping the formaldehyde concentration at a low level without depending on the room temperature.

  The air-conditioning operation control method and apparatus of the present invention can be applied to various air-conditioned spaces such as houses as an air-conditioning operation control method and apparatus that switches the air-conditioning conditions during actual operation in the air-conditioned space based on the formaldehyde concentration. It is.

  DESCRIPTION OF SYMBOLS 1 ... Air-conditioning operation control part (Air-conditioning operation control part before an actual operation start), 2 ... Power consumption measurement part, 3 ... Parameter calculation part, 4 ... Association memory | storage part, 5 ... Air-conditioning operation system determination part during real operation, 6 ... formaldehyde continuous measurement device, 7 ... parameter acquisition unit, 8 ... simulation unit, 8-1 ... first simulation unit, 8-2 ... second simulation unit, 9 ... air conditioning operation control unit (air conditioning operation during actual operation) Control part), 10 ... temperature measuring device, 100, 100 '... air conditioning operation control device, 200 ... air-conditioned space, 201 ... air conditioning equipment.

Claims (4)

A formaldehyde concentration measuring step for continuously measuring the concentration of formaldehyde in the air-conditioned space before the start of actual operation for a predetermined period under predetermined air-conditioning conditions;
A parameter calculation step for calculating the amount of formaldehyde generated and the number of ventilations in the predetermined air-conditioning condition in the air-conditioned space based on the measured formaldehyde concentration during the predetermined period;
A formaldehyde concentration simulation step for simulating the concentration of formaldehyde during actual operation under the predetermined air conditioning conditions in the air-conditioned space based on the calculated amount of formaldehyde generated and the number of ventilations;
An air conditioning condition switching step of switching an air conditioning condition during actual operation in the air-conditioned space based on the simulated formaldehyde concentration. In the air-conditioning operation control method according to claim 1,
An indoor temperature measuring step for continuously measuring the temperature in the air-conditioned space as the indoor temperature;
The formaldehyde concentration simulation step corrects the calculated amount of formaldehyde generated by the measured room temperature, and the predetermined air conditioning condition in the air-conditioned space based on the corrected amount of formaldehyde generated and the number of ventilations A control method for air-conditioning operation characterized by simulating the concentration of formaldehyde during actual operation. Formaldehyde concentration measurement means for continuously measuring the concentration of formaldehyde in the air-conditioned space before the start of actual operation for a predetermined period under predetermined air-conditioning conditions;
Parameter calculating means for calculating the amount of formaldehyde generated and the number of ventilations in the predetermined air-conditioning condition in the air-conditioned space based on the measured formaldehyde concentration during the predetermined period;
Formaldehyde concentration simulation means for simulating the concentration of formaldehyde during actual operation under the predetermined air conditioning conditions in the air-conditioned space based on the calculated amount of formaldehyde generated and the number of ventilations;
An air-conditioning operation control device comprising: air-conditioning condition switching means for switching an air-conditioning condition during actual operation in the air-conditioned space based on the simulated formaldehyde concentration. In the air conditioning operation control device according to claim 3,
An indoor temperature measuring means for continuously measuring the temperature in the air-conditioned space as the indoor temperature;
The formaldehyde concentration simulation means corrects the calculated amount of formaldehyde generated based on the measured indoor temperature, and the predetermined air conditioning condition in the air-conditioned space based on the corrected amount of formaldehyde generated and the number of ventilations. An air conditioning operation control device that simulates the concentration of formaldehyde during actual operation at a factory.

Images