JP2011122753A - Device and method for controlling air conditioning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and method for controlling air conditioning, capable of suppressing excessive humidity control and conducting effective air conditioning control. <P>SOLUTION: The device for controlling air conditioning includes: an indoor humidity comparison operation part 222 which determines that humidification is controlled when an indoor humidity measured value of a room as the air-conditioning control target is lower than the lower-limit value of a predetermined target range and determines that dehumidification is controlled when the humidity measured value is higher than the upper-limit value; and a relative humidity comparison operation part 223 which acquires an indoor temperature measured value, an outdoor temperature measured value and an outdoor humidity measured value and calculates a relative humidity value of the control target room based on these acquired values when humidification control is determined and the humidification control is prohibited when the relative humidity value is above the predetermined first threshold, and when dehumidification control is determined at the indoor humidity comparison operation part and the relative humidity value is below the predetermined second threshold, the dehumidification control is prohibited. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air conditioning control device and an air conditioning control method for controlling air conditioning in a facility such as a building.

  In recent years, against the background of the effects of the Kyoto Protocol on the prevention of global warming and the tightening of global energy demand, energy-saving measures for business buildings and the like have been demanded.

  In large-scale building facilities such as commercial buildings, about half of the energy consumed by the entire facility is due to air conditioning-related equipment, so promoting energy-saving for air-conditioning control will greatly contribute to energy saving for the entire building facility. Conceivable.

  In building facilities such as commercial buildings, air-conditioning control considering PMV (Predicted Mean Vote), which is an index for quantitatively treating thermal sensation, has become mainstream. This PMV is calculated by six elements of the indoor temperature, humidity, radiation temperature, airflow, human activity, and clothing amount of the air conditioning control target.

  As an example of air conditioning control in consideration of this PMV, there is a technique described in Patent Document 1. Patent Document 1 describes an air conditioning control device that performs efficient air conditioning control by controlling indoor temperature and indoor humidity in consideration of PMV.

JP 2007-285579 A

  By the way, the indoor humidity in a building is usually greatly affected by the outside air humidity. Therefore, the dehumidification control in the room when the outside air humidity is low, such as in winter, and the humidification control in the room when the outside air humidity is high, such as in summer, are excessive. It is considered to be control and unnecessary.

  However, in the air conditioning control device described in Patent Document 1 described above, the outside air humidity is not considered when controlling the room humidity, and the room temperature and the room humidity are controlled based on the room temperature measurement value and the room humidity measurement value. As a result, excessive humidity control as described above may be performed, which is inefficient.

  Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to provide an air conditioning control device and an air conditioning control method capable of suppressing excessive humidity control and performing efficient air conditioning control.

  In order to achieve the above object, an air conditioning control device of the present invention acquires an indoor humidity measurement value in a room subject to air conditioning control and compares it with a preset target humidity range, and the acquired indoor humidity measurement value is the target humidity. When the lower limit value of the range is lower than the lower limit value of the range, the humidity control is performed, and when the acquired indoor humidity measurement value is higher than the upper limit value of the target humidity range, the indoor humidity comparison operation unit is determined to be the target of dehumidification control, When it is determined that the calculation unit is a target for humidification control, the indoor temperature measurement value, the outside air temperature measurement value, and the outside air humidity measurement value are further acquired, and the relative humidity value in the room to be controlled is obtained from these measurement values. When the relative humidity value exceeds a preset first threshold value, it is determined that the humidification control is prohibited, and the indoor humidity comparison calculation unit determines that it is a target for dehumidification control. In addition, the indoor temperature measurement value, the outside air temperature measurement value, and the outside air humidity measurement value are acquired, and the relative humidity value in the room to be controlled is calculated from these measurement values, and the relative humidity value is set in advance. And a relative humidity comparison calculation unit that prohibits dehumidification control when the threshold value is below two thresholds.

  The first threshold value may be higher than the second threshold value.

  In addition, the relative humidity comparison calculation unit acquires season or weather information from the outside, and sets the first threshold value to be lowered when it is determined that the outside air humidity becomes high based on the season or weather information. Alternatively, the second threshold value may be set to be increased when it is determined that the outside air humidity becomes low based on weather information.

  Further, in the air conditioning control method of the present invention, the air conditioning control device acquires the indoor humidity measurement value in the air conditioning control target room and compares it with a preset target humidity range, and the acquired indoor humidity measurement value is within the target humidity range. The indoor humidity comparison calculation step, which is determined as a target for humidification control when lower than the lower limit value, and is determined as a target for dehumidification control when the acquired indoor humidity measurement value is higher than the upper limit value of the target humidity range, and the indoor humidity comparison calculation step When it is determined that it is subject to humidification control, the indoor temperature measurement value, the outside air temperature measurement value, and the outside air humidity measurement value are further obtained, and the relative humidity value in the room to be controlled is calculated from these measurement values. When the relative humidity value exceeds a preset first threshold value, humidification control is prohibited, and the dehumidification control is performed in the indoor humidity comparison calculation step. When the judgment is made, the room temperature measurement value, the outside air temperature measurement value, and the outside air humidity measurement value are further obtained, and the relative humidity value in the room to be controlled is calculated from these measurement values, and this relative humidity value is preset. And a relative humidity comparison calculation step for prohibiting dehumidification control when the value is below the second threshold value.

  According to the air-conditioning control device and the air-conditioning control method of the present invention, it is possible to perform efficient air-conditioning control while suppressing excessive humidity control.

It is a block diagram which shows the structure of the air-conditioning control system using the air-conditioning control apparatus by one Embodiment of this invention. It is a flowchart which shows operation | movement of the discharge alarm apparatus by one Embodiment of this invention.

<Configuration of air conditioning control system according to one embodiment>
A configuration of an air conditioning control system using an air conditioning control device according to an embodiment of the present invention will be described with reference to FIG.

  The air conditioning control system 1 according to the present embodiment includes an input device 10, an air conditioning control device 20, an indoor humidity sensor 30, an indoor temperature sensor 40, an outside air temperature sensor 50, an outside air humidity sensor 60, and a plurality of air conditioners 70. -1 to 70-3.

  When the input device 10 is operated by an operator who monitors the air conditioning state in the air conditioning control target facility and it is necessary to prohibit the execution of the control for each of the humidification control and the dehumidification control of the air conditioning control device 20, Instruction information indicating prohibition is input and transmitted to the air conditioning control device 20.

  The air conditioning control device 20 includes a control permission information storage unit 21 and a control unit 22.

  The control permission information storage unit 21 stores control state information indicating whether the humidity control of the air conditioning control device 20 is permitted or prohibited. This control state information is normally stored as a permitted state, and when instruction information for prohibiting humidity control is acquired from the input device 10 by an operator's operation, the control state information is switched to the prohibited state and stored. The stored control state information is continuously held even after switching of the air conditioner stop / start, switching of the air conditioning control device stop / start, and the like.

  The control unit 22 includes a control content determination unit 221, an indoor humidity comparison calculation unit 222, a relative humidity comparison calculation unit 223, and a humidity control unit 224.

  The control content determination unit 221 permits the execution of humidity control when the control state information is stored in the control permission information storage unit 21 as the permitted state, and executes the humidity control when the control state information is stored as the prohibited state. Is prohibited.

  When the control content determination unit 221 permits the execution of humidity control, the indoor humidity comparison calculation unit 222 acquires the indoor humidity measurement value from the indoor humidity sensor 30 and compares it with a preset target humidity range. When the acquired indoor humidity measurement value is lower than the lower limit value of the target humidity range, it is determined as a target for humidification control, and when the acquired indoor humidity measurement value is higher than the upper limit value of the target humidity range, it is determined as a target for dehumidification control. .

  When the relative humidity comparison calculation unit 223 determines that the indoor humidity comparison calculation unit 222 is subject to humidification control, the relative humidity comparison calculation unit 223 further obtains measured values from the indoor temperature sensor 40, the outdoor air temperature sensor 50, and the outdoor air humidity sensor 60, respectively. The relative humidity value in the room of the outside air humidity is calculated from these measured values, and humidification control is prohibited when the relative humidity value exceeds a threshold value THR1 that is a preset first threshold value.

  When the indoor humidity comparison calculation unit 222 determines that the relative humidity comparison calculation unit 223 is a target for dehumidification control, the relative humidity comparison calculation unit 223 further measures the measured values from the indoor temperature sensor 40, the outside air temperature sensor 50, and the outside air humidity sensor 60, respectively. And the relative humidity value of the outside air humidity in the room is calculated from these measured values. When this relative humidity value is below a preset second threshold value THR2, dehumidification control is prohibited.

  The humidity control unit 224 determines that the indoor humidity comparison calculation unit 222 is subject to humidification control and the relative humidity comparison calculation unit 223 does not prohibit the humidification control, the air conditioners 70-1 to 70-3. The humidification control is executed on the. Further, when it is determined that the indoor humidity comparison calculation unit 222 is a target for dehumidification control and the relative humidity comparison calculation unit 223 is not prohibited from dehumidification control, the dehumidification control is performed on the air conditioners 70-1 to 70-3. Is executed.

<Operation of Air Conditioning Control System According to One Embodiment>
Next, operation | movement of the air-conditioning control system 1 by this embodiment is demonstrated with reference to the flowchart of FIG.

  When the air conditioning control system 1 is operated, the control permission information storage unit 21 of the air conditioning control device 20 normally stores permission state information in which the execution of humidity control is permitted, and the input device 10 is operated by an operator's operation. When the instruction information prohibiting the humidity control is acquired from the stored information, the stored permission state information is switched to the prohibited state.

  When the air conditioning control system 1 is operated in a state in which the permission state information is stored in the control permission information storage unit 21 of the air conditioning control device 20, the control content determination unit 221 of the control unit 22 of the air conditioning control device 20 performs control permission. It is determined whether the control state information stored in the information storage unit 21 is in a permitted state or a prohibited state (S1).

  When the control content determination unit 221 determines that the control state information is stored in the control permission information storage unit 21 as a permitted state (“YES” in S1), execution of humidity control is permitted.

  When the execution of the humidity control is permitted, the indoor humidity comparison calculation unit 222 acquires the indoor humidity measurement value of the room to be controlled from the indoor humidity sensor 30, and the indoor humidity measurement value is set in a preset target humidity range, for example, Humidity control is started so as to be within 40% to 60%. Here, the target humidity range is set to a range of ± 5% of the indoor humidity set value, and when the humidity control is executed, the target humidity range of the indoor humidity set value ± 5% is further added with ± 2% as an error. That is, ± 7% of the indoor humidity set value is set as the allowable humidity range, and the measured indoor humidity value is compared with this allowable humidity range.

  As a result of the comparison, when it is determined that the indoor humidity measurement value is below the lower limit value of the allowable humidity range (“YES” in S2), it is determined that the humidity control is to be performed.

  Further, when it is determined that the indoor humidity measurement value exceeds the upper limit value of the allowable humidity range (“NO” in S2, “YES” in S3), it is determined that the room is to be subjected to dehumidification control.

  Next, when it is determined in step S <b> 2 that the target is humidification control, the relative humidity comparison calculation unit 223 further acquires measurement values from the indoor temperature sensor 40, the outdoor air temperature sensor 50, and the outdoor air humidity sensor 60. The relative humidity value in the room of the outside air humidity is calculated from these measured values.

  The calculation of the indoor relative humidity value of the outside air humidity will be described.

  First, from the acquired outside air temperature measurement value, an outside air absolute temperature value (OTABS) is calculated based on the following formula (1).

[Equation 1]
Outside air absolute temperature (OTABS) = outside air temperature measurement + 273.15 (1)
Next, the indoor saturated water vapor pressure (PWS) is calculated based on the following formula (2) from the outside air absolute temperature value (OTABS) calculated by the above formula (1).

[Equation 2]
Saturated water vapor pressure (PWS) = (exp (-5800.2206 / OTABS + 1.3914993 + OTABS * (-0.048640239 + OTABS
* (0.000041764768-0.000000014452093 * OTABS)) + 6.5459673
* LOG (OTABS, 2.71828182845904))) / 1000 (2)
Next, the acquired outside air humidity measurement value is set as the outside air humidity value (OH), and the following equation (3) is obtained from the saturated water vapor pressure (PWS) and the outside air humidity value (OH) calculated by the above equation (2). Based on this, an outside air absolute humidity value (OHABS) is calculated.

[Equation 3]
Open air absolute humidity (OHABS) = 0.62198 * OH * PWS / 100 / (101.325-OH * PWS / 100) (3)
Next, an indoor absolute temperature value (ITABS) is calculated based on the following equation (4) from the measured indoor temperature value obtained by the above equation (3).

[Equation 4]
Room temperature absolute temperature (ITABS) = Indoor temperature measurement average +273.15 (4)
Next, based on the following formula (5), the relative room temperature is calculated based on the absolute outdoor humidity value (OHABS) calculated by the above formula (3) and the room temperature absolute temperature value (ITABS) calculated by the above formula (4). A humidity value (RH) is calculated.

[Equation 5]
Indoor relative humidity (RH) = OHABS * 101.325 / (0.62198 * ITABS / 100 + ITABS * OHABS / 100) (5)
The indoor relative humidity value calculated in this way is compared with a threshold value THR1 (for example, 60%), which is a first threshold value set in advance (S4). The first threshold value is set to a value sufficiently higher than the lower limit value of the allowable humidity range in which it is determined in step S2 that humidification control is necessary.

  As a result of the comparison, when the indoor relative humidity value exceeds the threshold value THR1 (“YES” in S4), it is considered that the outside air humidity is high and the indoor humidity rises due to the influence of the outside air humidity, so humidification control is unnecessary. It is determined that there is, and humidity control is prohibited (S8).

  Further, when the indoor relative humidity value does not exceed the threshold value THR1 (“NO” in S4), the humidity control unit 224 performs humidification control (S5).

  When it is determined in step S3 that the object is to be subjected to dehumidification control (“YES” in S3), the relative humidity comparison calculation unit 223 performs control based on the above formulas (1) to (5). The relative humidity value is calculated and compared with a threshold value THR2 (for example, 40%), which is a second threshold value set in advance (S6). The second threshold value is set to a value sufficiently lower than the upper limit value of the allowable humidity range in which it is determined in step S3 that dehumidification control is necessary.

  As a result of the comparison, when the indoor relative humidity value is lower than the threshold value THR2 (“YES” in S6), it is considered that the outside air humidity is low and the indoor humidity falls due to the influence of the outside air humidity, so dehumidification control is unnecessary. It is determined that there is, and humidity control is prohibited (S8).

  Further, when the indoor relative humidity value is not lower than the threshold value THR2 (“NO” in S6), dehumidification control is executed by the humidity control unit 224 (S7).

  Further, when it is determined in step S1 that the control state information stored in the control permission information storage unit 21 is in a prohibited state (“NO” in S1), or in step S2, the indoor humidity measurement value is the lower limit of the allowable humidity range. If it is determined that the value is not lower than the upper limit value and the upper limit value of the allowable humidity range is not exceeded (within the allowable humidity range) in step S3, humidity control is determined to be unnecessary and prohibited (S8). .

  According to the present embodiment described above, efficient air conditioning control in which excessive humidity control is suppressed in consideration of outside air humidity in a facility such as a building can be performed.

  In the above-described embodiment, the threshold values THR1 and THR2 can be freely set and changed by the operator or by information acquired from the outside, and by changing these according to the season and weather in which humidity varies greatly, further suitable humidity control It can be performed. For example, it is possible to suppress humidification control as much as possible by setting the threshold value THR1 low during summertime when the outside air humidity is high or during rainy weather. Further, by setting the threshold value THR2 high in winter when the outside air humidity is low, it is possible to suppress dehumidification control as much as possible.

  In the above embodiment, when the relative humidity value calculated by the relative humidity comparison calculation unit 223 is compared with a preset threshold value THR1 or THR2 to determine whether to execute or prohibit dehumidification. The target humidity value is set as a threshold value in advance, and when the calculated relative humidity value exceeds this threshold value (target humidity value), humidification control is prohibited, and this threshold value (target humidity value) is set. If it does not exceed, dehumidification control may be prohibited.

DESCRIPTION OF SYMBOLS 1 ... Air-conditioning control system 10 ... Input device 20 ... Air-conditioning control device 21 ... Control permission information storage part 22 ... Control part 30 ... Indoor humidity sensor 40 ... Indoor temperature sensor 50 ... Outside temperature sensor 60 ... Outside humidity sensor 70-1 to 70 -3 ... Air conditioner 221 ... Control content determination unit 222 ... Indoor humidity comparison calculation unit 223 ... Relative humidity comparison calculation unit 224 ... Humidity control unit

Claims (4)

Acquire the measured indoor humidity value of the air-conditioning control target room and compare it with the preset target humidity range. When the acquired indoor humidity measured value is lower than the lower limit value of the target humidity range, it is acquired as the target of humidification control. An indoor humidity comparison operation unit that determines that the measured humidity value is higher than the upper limit value of the target humidity range, and is a target for dehumidification control;
When it is determined that the room humidity comparison operation unit is a target for humidification control, a room temperature measurement value, an outside air temperature measurement value, and an outside air humidity measurement value are further acquired, and the room to be controlled is obtained from these measurement values. The relative humidity value is calculated, and when the relative humidity value exceeds a preset first threshold, the humidification control is prohibited,
When it is determined by the indoor humidity comparison calculation unit that the object is to be subjected to dehumidification control, the indoor temperature measurement value, the outside air temperature measurement value, and the outside air humidity measurement value are further acquired, and the room to be controlled is obtained from these measurement values. An air conditioning control apparatus comprising: a relative humidity comparison calculation unit that calculates a relative humidity value of the first and second and prohibits dehumidification control when the relative humidity value is below a preset second threshold value. The air conditioning control device according to claim 1, wherein the first threshold value is higher than the second threshold value. The relative humidity comparison calculation unit obtains season or weather information from the outside,
Based on the season or weather information, if the outside air humidity is determined to be high, the first threshold is set to be lowered,
3. The air conditioning control device according to claim 1, wherein the second threshold value is set to be increased when it is determined that the outside air humidity becomes low based on the season or weather information. The air conditioning control device acquires the indoor humidity measurement value in the room subject to air conditioning control and compares it with a preset target humidity range. When the acquired indoor humidity measurement value is lower than the lower limit value of the target humidity range, the humidification control is performed. An indoor humidity comparison calculation step for determining a target of dehumidification control when the acquired indoor humidity measurement value is higher than an upper limit value of the target humidity range;
When it is determined in the indoor humidity comparison calculation step that the target is humidification control, the indoor temperature measurement value, the outside air temperature measurement value, and the outside air humidity measurement value are further acquired, and the room to be controlled is obtained from these measurement values. The relative humidity value is calculated, and when the relative humidity value exceeds a preset first threshold, the humidification control is prohibited,
When it is determined in the indoor humidity comparison calculation step that the target is dehumidification control, the indoor temperature measurement value, the outside air temperature measurement value, and the outside air humidity measurement value are further acquired, and the room to be controlled is obtained from these measurement values. And a relative humidity comparison calculation step for prohibiting dehumidification control when the relative humidity value is below a preset second threshold value.

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