JP2008170025A - Air-conditioning control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide energy-saving air-conditioning control sensitive according to season and having high effect without sacrificing occupant's comfort by controlling both of an indoor temperature and an indoor humidity. <P>SOLUTION: This air-conditioning control device comprises an indoor temperature-indoor humidity combination calculating means 2 for calculating the combination of the indoor temperature and the indoor humidity corresponding to a target value of comfort index standard effective temperature (SET*), a temperature set value-humidity set value deciding means 3a for selecting and deciding the combination of indoor temperature and indoor humidity for energy saving from the calculated combinations of indoor temperature and indoor humidity by every specific period, and a temperature-humidity control means 4 for individually controlling the indoor temperature and the indoor humidity to achieve the decided temperature value and humidity value. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air-conditioning control apparatus that realizes fine and effective energy-saving air-conditioning control according to the season without sacrificing comfort of a living space.

  Currently, it is said that about half of the energy consumed by all building facilities is occupied by energy consumption related to air conditioning. For this reason, promoting energy saving in terms of air conditioning control greatly contributes to energy saving of the entire building equipment. On the other hand, an office building or the like as an amenity space is required to satisfy the thermal sensation of a resident in the room, so-called comfort. Energy savings and comfort may have conflicting aspects. However, it is possible to eliminate waste of energy by suppressing excessive energy consumption within the range of comfort of residents.

  As an example, air conditioning control using a comfort index PMV (Predicted Mean Vote) is known.

Conventionally, comfortable air conditioning control that uses the comfort index PMV to achieve both energy saving and occupant comfort has already been put into practical use. For example, see Patent Document 1.
Japanese Patent Laid-Open No. 05-126380 “Air Conditioning Control Device” Japanese Patent Laid-Open No. 10-292941 “Air Conditioning Control Device” ： Toshiba review, Vol.59 No.4, P40-P43 (2004) “Development and practical application of comfortable air conditioning control system for buildings”

  In the apparatus described in Patent Document 1, a method of automatically calculating a temperature set value such that the comfort index PMV is constant is employed. In this example, humidity control is not performed. The reason why the humidity is not controlled is that in an ordinary air conditioner, in order to reduce the humidity, it is necessary to supercool once and then heat to keep the room temperature constant. For example, if dehumidification control is performed during cooling in the summer, the supply air needs to be reheated. When the humidity is also controlled as described above, energy is excessively consumed as compared with the method of controlling only the temperature.

  Recently, by using a desiccant type air conditioner that adsorbs moisture into fine pores in the resin and blows dry air (dehumidification), or by using an air conditioner that uses both a direct expansion coil and a cold / hot water coil, the temperature can be reduced while reducing energy consumption.・ Humidity can be controlled individually. In addition, an air conditioning temperature / humidity control algorithm or the like that suppresses energy consumption as much as possible has been invented (see, for example, Patent Document 2).

  However, in reality, an effective air-conditioning control device that controls both temperature and humidity to achieve both energy saving and occupant comfort has not been realized.

  Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioning control device that controls both room temperature and room humidity and achieves both energy saving and occupant comfort.

  In order to achieve the above object, according to the present invention, in claim 1, an air-conditioning control apparatus using a human thermal sensation as a comfort index, the indoor temperature and the indoor humidity corresponding to the target value of the comfort index The combination of the room temperature and the room humidity that saves energy from the combination of the room temperature and the room humidity calculated by the pair of the room temperature and the room humidity. Temperature setting value / humidity setting value determining means for determining the temperature setting value and humidity setting value by selecting at regular intervals, and the temperature value and humidity value determined by the temperature setting value / humidity setting value determining means Temperature / humidity control means for individually controlling the room temperature and the room humidity, and using the standard effective temperature (SET *) or the Missal sensation temperature as the comfort index. It is characterized by a door.

  In Claim 2, it is an air-conditioning control apparatus using a human thermal sensation as a comfort index, and it is a set of a room temperature and a room humidity that calculates a combination of a room temperature and a room humidity corresponding to a target value of the comfort index. A combination of the room temperature and the room humidity that saves energy is selected from a combination of the calculation means and the room temperature and room humidity calculated by the room temperature / room humidity set calculation means, and the temperature set value and Current comfort index value for determining the current comfort index value from the temperature setting value / humidity setting value determining means to determine the humidity setting value, clothing amount setting value and activity amount setting value, temperature measurement value and humidity measurement value, etc. When the comfort means current value obtained by the computing means and the current comfort index value computing means is deviated from the target value of the comfort index, the temperature set value / humidity set value determination A temperature setting value correcting means for obtaining a temperature setting value for matching the comfort index with the target value by correcting the temperature setting value selected by the means, and the temperature setting value and the humidity setting corrected by the setting value correcting means Temperature / humidity control means for individually controlling the room temperature and the room humidity so as to be values, and using a standard effective temperature (SET *) as the comfort index.

  According to the present invention, by using the standard effective temperature (SET *) or the Misnar sensation temperature as the comfort index, while controlling both the room temperature and the room humidity, without sacrificing the comfort of the resident, The energy-saving air-conditioning control that is fine and effective according to the season can be realized.

<Standard effective temperature as a comfort index>
The above-mentioned PMV is well known as an index representing the sense of heat and coldness of human beings (warm and cold sensation), but this PMV does not take into account the sweating of the human body. ASHRAE (American Society of Heating, Cooling and Air Conditioning) has been proposed to incorporate the new effective temperature ET *, which is a thermal index based on a thermal equilibrium formula including sweating to compensate for the shortcomings of the PMV theory. Standard effective temperature: SET * (Standard New Effective Temperature). In the present invention, the standard effective temperature (SET *) is used as an index of comfort level, which will be briefly described below.

  In consideration of human comfort, it is important to consider the human thermal sensation of heat and cold when ensuring an appropriate indoor thermal environment. The following variables affect this:

(1) Ambient air temperature (dry bulb temperature) ° C
(2) Relative humidity%
(3) Average radiation temperature Temperature of surrounding walls, etc. ℃
(4) Air velocity m / s
(5) Amount of activity (internal calorific value of human body) 1 [met] = 58.2 [W / m2]
(6) Amount of clothing 1 [clo] = 0.155 [m2 ・ ℃ / W]
Even in PMV, the above six variables are taken into consideration, but the effective temperature is a method of expressing this with one body temperature. A standard effective temperature is a method of setting a standard thermal environment and expressing the actual thermal environment by the temperature of the standard thermal environment.

The standard thermal environment is described below.
1. Assume that the ambient air temperature (dry bulb temperature) is equal to the temperature of the surrounding wall.

2. The relative humidity at the ambient temperature is 50%.
3. The wind speed is about 0.1 m / s to 0.15 m / s, for example, 0.13 m / s.
4). The amount of clothing is 0.6clo when the metabolic rate is 1.17met (0.67clo when 1.0met).

  Next, the heat balance in the actual heat environment is calculated, and the average skin temperature and the skin wetted surface ratio are calculated. In the standard heat environment, the average skin temperature (tsk) and skin wettability (w) values calculated in the real heat environment are used, and the sum of sensible heat and latent heat from the skin (C + R + Esk) is real. Calculate the temperature of the standard thermal environment to be equal to the thermal environment. This temperature is called the standard effective temperature SET *.

In the actual calculation, 6 elements of the actual thermal environment are input, and the average skin temperature (tsk) and skin wetting area ratio (w) of the actual environment, the sum of sensible heat and latent heat (C + R + Esk) are calculated, Next, the wind speed of the standard thermal environment, the amount of clothing, the relative humidity of the calculated standard effective temperature 50%, that is, the saturated water vapor pressure of the standard effective temperature is obtained, and a value that is 0.5 times the value is adopted. Repeated calculations are required to determine the standard effective temperature. To explain with the formula,
1. Calculate the sum of latent heat (C + R + Esk) in the real environment.

2. Calculate the convective heat transfer coefficient hcs and radiant heat transfer coefficient hrs (hs = hcs + hrs) in the standard thermal environment, the heat and water vapor resistance of the clothing, and SET * is unknown.
3. C + R + Esk = fcls / hs / (tsk-set *) + w / LR / Fpcls / hcs / (Psk, s-0.5 / Pset *, s)
C + R + Esk, tsk, w, Psk, s is the actual thermal environment, set * is the standard effective temperature to be found, others are the standard thermal environment, the subscript sk is the skin temperature, and s is the meaning of saturation (references) : Http://home.kanto-gakuin.ac.jp/~yamazaki/yamaken/2n/sets142.htm)
An example of the standard effective temperature calculated using the above formula is shown in FIGS. FIG. 7 shows the standard effective temperature SET * with respect to the ambient temperature in the case of chair work, relative humidity 50%, and air flow velocity 0.125 m / s. FIG. 8 shows the case where the relative humidity is 70%.

<First Embodiment>
Next, a first embodiment of an air conditioning control device according to the present invention will be described. In the first embodiment, the standard effective temperature (SET *) is used as the comfort index. In addition, the air conditioner to be controlled in the embodiment is a system that can individually control the indoor temperature and the indoor humidity while suppressing energy consumption.

  FIG. 1 is a block diagram showing a first embodiment of an air conditioning control device according to the present invention.

  The air conditioning control device 1a shown in the figure includes a room temperature / room humidity pair calculating means 2 for calculating a combination of room temperature and room humidity corresponding to the standard effective temperature (SET *) target value, and the room temperature / room temperature. Temperature setting value / humidity setting value determining means 3a for selecting and determining a combination of room temperature and room humidity, which saves energy, from a combination of room temperature and room humidity calculated by the humidity pair calculating means 2 And a temperature / humidity control means 4 for individually controlling the room temperature and the humidity so as to coincide with the temperature value and the humidity value determined by the temperature setting value / humidity setting value determination means 3a. Control and adjust the temperature and humidity of the room 6. In the figure, 7 is a thermometer in the room 6 and 8 is a hygrometer in the room 6.

The room temperature / room humidity set calculating means 2 determines a standard effective temperature (SET *) target value within the comfort zone for each season, for example, and obtains a set of room temperature and room humidity that satisfies the standard effective temperature (SET *) target value. FIG. 2 shows an example of a combination of room temperature and room humidity with respect to the standard effective temperature (SET *) target value. In the example of Fig. 2, summer: wind speed is 0.13m / s, clothing thermal insulation is 0.6clo, metabolic rate is 1MET, and the standard effective temperature (SET *) target value is close to the comfort range upper limit.
SET * = 26 ℃
The right-hand line is the set of room temperature and room humidity. Similarly, in winter: wind speed is 0.13m / s, clothing thermal insulation is 1.0clo, metabolic rate is 1MET, and the standard effective temperature (SET *) target value is close to the comfort range lower limit.
SET * = 22 ℃
The left-hand line is the set of room temperature and room humidity.

  The temperature setting value / humidity setting value determining means 3a determines the temperature / humidity value for energy saving from a countless combination of the room temperature and the room humidity described above for every predetermined period. For example, the difference between the outside air enthalpy calculated from the measured values of the outside air temperature and the outside humidity by a known relational expression and the indoor air enthalpy calculated from the measured values of the room temperature and the room humidity based on the known relational expression is minimized. Choose values for room temperature and humidity (corresponding to claim 3).

  The temperature / humidity control means 4 is constituted by a DDC (Direct Digital Controller) or the like, and the temperature setting value and humidity setting in which the room temperature and the room humidity are output from the temperature setting value / humidity setting value determination means 3 at regular intervals. The amount of operation such as cold / hot water flowing in the air conditioner and the damper opening of the air pipe is automatically controlled individually based on the indoor temperature measurement value and the indoor humidity measurement value so as to match the values.

  FIG. 3 shows a specific system configuration of the air conditioner 5 in which the temperature and humidity are adjusted by the temperature / humidity control means 4.

  As shown in the figure, the air conditioner 5 includes a direct expansion coil 11 that introduces external air and cools or heats it with a refrigerant, and cools or heats the external air cooled or heated by the direct expansion coil 11 with cold water or hot water. A cold / hot water coil 12 for adjusting the temperature of the air supplied to the room by heating is supplied to the room 6 and the air adjusted by the cold / hot water coil 12 is supplied to the room 6 by the air supply fan 13.

  The direct expansion coil 11 is connected with a compressor 14 that compresses the refrigerant, a condenser 15 that condenses the compressed refrigerant, and an expansion valve 16 that expands the condensed refrigerant in this order. A cycle is configured.

  Cold / hot water is supplied to the cold / hot water coil 12 through a control valve 17 from a central heat source (not shown), and the supplied air is cooled or heated and supplied to the room 6. . The cold water after cooling the cold / hot water coil 12 is supplied to the condenser 15 as return cold water, and after cooling the condenser 15, it is returned to the central heat source.

  The return air from the room 6 (return air) is exhausted by the return air fan 18 through the damper 19, while a part of the return air is mixed with the outside air through the damper 20, the pipe 21, and the pipe 22. The direct expansion coil 11 is supplied. In addition, the outside air cooled by the direct expansion coil 11 and the return air are mixed in the piping 25 on the outlet side of the direct expansion coil 11 via the damper 23 and the pipe 24, and then supplied to the cold / hot water coil 12. ing.

  Further, a thermometer 7 and a hygrometer 8 are installed in the room 6 to be air-conditioned control. The indoor temperature signal measured by the thermometer 7 is connected to the DDC 41 of the temperature / humidity control means 4, and the control of the control valve 17 that supplies the cold / hot water to the cold / hot water coil 12 is executed by the DDC 41. . The indoor humidity signal measured by the hygrometer 8 is connected to the DDC 42, and a damper 20 that supplies the return air to the direct expansion coil 11 and a damper that supplies the return air to the cold / hot water coil 12 by the DDC 42. 23 control is executed.

  In the above configuration, the outside air introduced through the damper 26 and the pipe 22 is cooled by the direct expansion coil 11. Since the refrigerant evaporating temperature of the evaporator constituting the direct expansion coil 11 is about 5 ° C., moisture in the outside air can be removed. The indoor humidity is measured by the hygrometer 8, and the moisture removal amount is adjusted by adjusting the mixing ratio between the outside air and the return air that passes through the evaporator of the direct expansion coil 11 in order to control the indoor humidity. This is performed by adjusting the opening degree of the damper 23 and the damper 20 by the DDC 42 based on the measured humidity.

The mixed air that has passed through the direct expansion coil 11 is mixed again with an amount obtained by subtracting the return air amount that has passed through the direct expansion coil 11 from the return air amount (return air amount) that returns to the room, and is introduced into the cold / hot water coil 12. . By mixing with the return air from the room 6, the air supercooled by the direct expansion coil 11 is warmed. The temperature of the room 6 is adjusted by adjusting the supply air temperature. This control is performed when the DDC 41 automatically controls the valve opening degree of the control valve 17 based on the signal from the thermometer 7 in the room 6 based on the cold water / hot water flow rate of the cold / hot water coil 12.
According to the above first embodiment, by taking the above-described means, it is possible to control both the indoor temperature and the indoor humidity, and finely adjust according to the season without sacrificing the comfort of the resident. It is possible to realize energy-saving air conditioning control that is highly effective.

  In addition, it is possible to suppress excessive energy consumption due to room temperature adjustment reheating in temperature and humidity control, and energy saving can be achieved.

Second Embodiment
Next, 2nd Embodiment of the air-conditioning control apparatus by this invention is described. The basic apparatus configuration is the same as that in FIG. 1 and will be described with reference to FIG.

  The second embodiment is different from the first embodiment in that Misnar sense temperature is used as a comfort index.

  In addition to air temperature, it is thought that wind speed, humidity, solar radiation, body temperature, clothing, etc. will affect the perceived temperature.There are various calculation methods other than SET *, but only the influence of indoor humidity is considered. The Misnar method is often used because it is relatively easy to calculate. The Misnar method is a mathematical expression of the change in temperature experienced by humidity in the absence of wind, and is often used mainly to express the heat of heat. The Misnar body temperature (° C.) can be determined by the following equation.

Misnar temperature (° C) = T − 1 / 2.3 × (T−10) × (0.8− H / 100)
T is room temperature (° C), H is room relative humidity (%)
In the room temperature / humidity pair calculating means, the target value of the Misnar sensation temperature in the comfortable area is inputted, and a pair of the room temperature and the room humidity satisfying this is obtained. In the example shown in FIG. 4, the results of obtaining the respective sets of room temperature and room humidity when the target values of the Missnar sensation temperature are 24 ° C., 25 ° C., and 26 ° C. are shown.

  In this way, even when using the Missinal sensation temperature as a comfort index, it is possible to control both the room temperature and the room humidity, and at the same time fine and effective according to the season without sacrificing the comfort of the residents. Large energy-saving air conditioning control can be realized.

  In addition, it is possible to suppress excessive energy consumption due to room temperature adjustment reheating in temperature and humidity control, and energy saving can be achieved.

<Third Embodiment>
FIG. 5 is a block diagram showing a third embodiment of the air-conditioning control apparatus according to the present invention. In FIG. 5, the same components as those in FIG. Moreover, in this embodiment, the example which used standard effective temperature (SET *) as a comfort parameter | index is shown.

  The air conditioning control device 1b shown in the figure includes an indoor temperature / indoor humidity pair calculating means 2 for calculating a combination of an indoor temperature and an indoor humidity corresponding to the standard effective temperature (SET *) target value, and a clothing amount set value. Current comfort index value calculation means 51 for calculating the current standard effective temperature (SET *) value from the activity amount set value, the standard effective temperature (SET *) target value and the calculated standard effective temperature (SET *) current Temperature setting value correcting means 52 for correcting the temperature setting value so as to make the current standard effective temperature (SET *) value coincide with the target standard effective temperature (SET *) value when the value deviates, and the room temperature and the room humidity The combination of the room temperature and the room humidity that saves energy is selected at regular intervals from the combination of the room temperature and the room humidity calculated by the set calculation means 2, and the temperature set value correction means 52 The temperature setting value / humidity setting value determining means 3b for determining the corrected temperature setting value based on the corrected temperature setting value, and the temperature value and the humidity value determined by the temperature setting value / humidity setting value determining means 3b. Temperature / humidity control means 4 for individually controlling the room temperature and the room humidity.

  The current comfort index value calculation means 51 calculates a comfort index value from measured values such as clothing and activity amount set values, temperature, and humidity. Further, the temperature set value correction means 52 calculates a correction value by, for example, fuzzy inference to obtain a temperature set value in the current cycle. A specific method for the latter is described in detail, for example, in Japanese Patent No. 3049266 (Japanese Patent Laid-Open No. 5-126380) and Japanese Patent No. 3361017 (Japanese Patent Laid-Open No. 10-141736).

  The current comfort index value calculation means 51 uses the calculation method already described in the explanation of the standard effective temperature (SET *) using the measured values of the clothing amount and the activity amount set value, the temperature, the humidity, the average radiation temperature, and the airflow velocity. Ask. Wind velocity (air velocity) v is v ≦ 0. At 1 m / s, the value of SET * does not change with changes in v. In addition, when the air conditioning control is a constant air volume method, v can be considered constant. Therefore, in these cases, the wind speed can be omitted from the calculation of SET *. Moreover, when the sensor of average radiation temperature is not installed, average radiation temperature is estimated by calculation (refer patent 3758830 gazette). A specific configuration example of the temperature set value correcting means 52 is shown in FIG. This example is disclosed in Japanese Patent No. 3049266.

  The temperature set value correcting means 52 includes a deviation calculating section 71 for obtaining a deviation Ep between the current standard effective temperature (SET *) value calculated by the current comfort index value calculating means 51 and the standard effective temperature (SET *) target value. A change amount calculation unit 72 for calculating the change amount ΔEp of the deviation Ep, a fuzzy calculation unit 73 for inputting the deviation Ep and the change amount ΔEp of the deviation Ep and calculating the change amount of the room temperature set value by fuzzy inference, And an addition unit 74 for accumulating and adding the change amounts of the room temperature set value to obtain the room temperature set value.

  In this case, the change amount calculation unit 72 inputs the deviation Ep of the standard effective temperature (SET *) value obtained by the deviation calculation unit 71, calculates the difference from the previous value, and calculates the change amount ΔEp of the deviation Ep as a fuzzy value. It supplies to the calculating part 73.

  In the fuzzy computing unit 73, a fuzzy control rule table and a membership function (both of which are not shown) are set in advance, and the amount of change in the temperature setting value (from these fuzzy control rule table and each membership function ( Correction amount). The adding unit 74 adds the change amount of the temperature set value to the previous temperature set value to obtain the current temperature set value and supplies it to the temperature set value / humidity set value determining means 3b.

  The subsequent operation of the temperature / humidity setting value determining means 3b and the operation of the temperature / humidity control means 4 are the same as those of the first embodiment shown in FIG.

  According to the above third embodiment, by taking the above-mentioned means, it is possible to control both the indoor temperature and the indoor humidity, and finely adjust according to the season without sacrificing the comfort of the resident. Energy-saving air-conditioning control that is highly effective.

  In the third embodiment, an example in which fuzzy calculation is used as the configuration of the temperature set value correction means (see FIG. 6) is shown, but PID calculation or the like may be used.

<Other embodiments>
In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, it can change and implement variously.

  For example, in each of the embodiments described above, the temperature setting value / humidity setting value determining means 3 selects the temperature and humidity values from the set of the room temperature and the room humidity (FIGS. 2 and 4). (For example, 30%) may be provided. This is to avoid overdrying in consideration of human health. Similarly, in order to avoid an overhumidity state, an upper limit value (for example, 70%) of humidity may be provided (corresponding to claim 4).

  Further, the embodiments can be implemented in combination as much as possible, and in that case, the effect of the combination can be obtained.

The block diagram which shows 1st Embodiment of the air-conditioning control apparatus by this invention. Explanatory drawing which shows the example of the group of room temperature and room humidity which satisfy | fills standard effective temperature (SET *) target value. The block diagram which shows an example of the air-conditioning system using the direct expansion coil and cold / hot water coil to which this invention is applied. Explanatory drawing which shows the example of the group of the room temperature and room humidity which satisfy | fill a Misnar body sensation temperature target value. The block diagram which shows 3rd Embodiment of the air-conditioning control apparatus by this invention. The block diagram which shows the structure of the temperature setting value correction means of 3rd Embodiment. Explanatory drawing which shows standard effective temperature SET *. Explanatory drawing which shows standard effective temperature SET *.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b: Air-conditioning control apparatus 2: Room temperature / room humidity set calculation means 3a, 3b: Temperature set value / humidity set value determination means 4: Temperature / humidity control means 5: Air conditioner 6: Indoor 7: Thermometer 8 : Hygrometer 51: Current comfort index value calculation means 52: Temperature set value correction means 61: Airflow velocity meter 62: Average radiation thermometer

Claims (4)

An air conditioning control device that uses human thermal sensation as a comfort index,
A room temperature / room humidity set calculating means for calculating a combination of the room temperature and the room humidity corresponding to the target value of the comfort index;
Select a combination of room temperature and humidity to save energy from the combination of room temperature and room humidity calculated by the room temperature / humidity pair calculation means, and set the temperature setting value and humidity setting value at regular intervals. A temperature setting value / humidity setting value determining means to be determined;
Temperature / humidity control means for individually controlling the room temperature and the room humidity so as to be the temperature value and the humidity value determined by the temperature setting value / humidity setting value determination means,
The air conditioning control apparatus characterized by using a standard effective temperature (SET *) or a Misnar sensation temperature as the comfort index. An air conditioning control device that uses human thermal sensation as a comfort index,
A room temperature / room humidity set calculating means for calculating a combination of the room temperature and the room humidity corresponding to the target value of the comfort index;
Select a combination of room temperature and humidity to save energy from the combination of room temperature and room humidity calculated by the room temperature / humidity combination calculation means at regular intervals, and set the temperature setting value and humidity setting value. A temperature setting value / humidity setting value determining means to be determined;
A current comfort index value calculating means for obtaining a current comfort index value from a clothing amount set value and an activity amount set value and a temperature measurement value and a humidity measurement value;
When the current comfort index value calculated by the current comfort index value calculating means is deviated from the target value of the comfort index, the temperature set value selected by the temperature set value / humidity set value determining means is A temperature setting value correcting means for obtaining a temperature setting value for matching the comfort index with the target value by correcting;
Temperature / humidity control means for individually controlling the room temperature and the room humidity so as to be the temperature setting value and the humidity setting value corrected by the setting value correction means,
An air conditioning control device using a standard effective temperature (SET *) as the comfort index. In the air-conditioning control device according to claim 1 or 2,
The temperature setting value / humidity setting value determining means selects the values of the room temperature and the room humidity at which the difference between the room air enthalpy obtained from the room temperature and the room humidity and the outside air enthalpy obtained from the outside air temperature and the outside air humidity is minimized. An air-conditioning control device. In the air-conditioning control device according to any one of claims 1 to 3,
An air-conditioning control apparatus that determines a humidity setting value by providing upper and lower limit ranges for the indoor humidity value selected by the temperature setting value / humidity setting value determining means.

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