JP2002228225A - Method and system for operating energy saving effect achievement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To answer a request for disclosing the information of effort for reducing the environmental load by making possible to attain the numeric data indicative of the achievement of energy saving. SOLUTION: When an actual temperature set value TsetR is returned back to a management set value Tset, achievement Ei of energy saving effect is operated every data collection period (e.g. 10 min) during an interval when the actual temperature set value TsetR is returned back to the management set value Tset according to following formulas. Cooling season; Ei=(TsetR-TocuH)×C1×C2×C3, heating season; Ei=(TocuH-TsetR)×C1×C2×C3. In the formulas, TsetR is the actual temperature set value after reset operation, TocuH is a user set value before reset operation, C1 is outdoor air volume (constant value), C2 is specific heat (constant), and C3 is specific gravity (constant). The achievement Ei is not operated when an air conditioner is stepped or during outdoor air cooling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for calculating an energy saving effect result in an air conditioning system.

[0002]

2. Description of the Related Art In recent years, "environmental problems" have been highlighted as social problems, and efforts to reduce the environmental burden have been implemented from various aspects, such as the revision of the Energy Conservation Law and the Recycling Law.

For example, in an air-conditioning system disclosed in Japanese Patent Application Laid-Open No. 6-331198 (Japanese Patent No. 2992944), a temperature set value for an air-conditioning zone (hereinafter referred to as a temperature set value) from a plurality of viewpoints such as comfort and energy saving. Is referred to as a management setting value). Normally, this management set value is set as the actual temperature set value. However, if there is a change request from the resident (resident), the actual temperature set value is changed to the temperature set value from the resident side (hereinafter, this temperature set value). The value is changed to a resident-side temperature set value), and after a predetermined time elapses, is returned to the management set value.

FIG. 5 schematically shows this air conditioning system. In the figure, 1 is an air conditioning zone, 2 is an air conditioner that supplies conditioned air to the air conditioning zone 1, 3 is an air conditioner controller,
4 is a host controller, 5 is a central monitoring device, 6 is a user terminal installed in the air conditioning zone 1, and 7 is a temperature sensor arranged in the air conditioning zone 1.

[0005] The host controller 4
Temperature setting value T_comfCalculation of comfortable temperature set value
Means 4-1 and energy saving temperature set value in air conditioning zone 1
T_{sa ve}Energy saving temperature set value calculating means 4-2 for determining
Actual temperature set value T for tone zone 1_setRDetermine the temperature
And a setting value determining means 4-3.

[0006] The comfortable temperature set value calculating means 4-1 calculates the PMV (predicted average temperature) in the air conditioning zone 1 based on the temperature Ta, humidity RH, radiation temperature Tr, airflow speed Vair, activity amount met, and clothing amount clo in the air conditioning zone 1. Feeling: Pred
icted Mean Vote), and then a comfortable temperature set value T _comf that makes this PMV zero. The energy saving temperature set value calculation means 4-2 receives the room temperature set value from another air conditioning zone as an input and obtains an energy saving temperature set value T _save for preventing energy mixing loss and the like.

[0007] Comfortable temperature set value calculation means 4-1 and energy saving
(4) Comfort temperature determined by the temperature set value calculation means 4-2
Set value T_comfAnd energy saving temperature set value T_saveIs the temperature setting
The value is given to the value determining means 4-3. Temperature set value determination means 4
-3 is the comfortable temperature set value T _comf, Energy saving temperature set value T
_saveUser terminal installed in air conditioning zone 1
From 6 the resident side temperature set value T
_ocuBut also from the central monitoring device 5 as an administrator's request.
Supervisor side temperature set value T_opeIs given.

[0008] The temperature set value determining means 4-3 is provided with a comfortable temperature setting.
Constant value T_comf, Energy saving temperature set value T_{sa ve}, Resident side temperature setting
Constant value T_ocu, Administrator temperature setting value T_opeWeighting factor
a₁, A _Two, A_Three, A_FourAnd multiply these by, for example,
Addition (weighted average) as shown in equation (1)
The value obtained by averaging is used as the management set value T_setAnd T_set= A₁× T_comf+ A_Two× T_save+ (A_Three× T_ope+ A_Four× T_ocu) / (A ₁ + A_Two+ A_Three+ A_Four・ ・ ・ ・ ・ (1)

Normally, the temperature set value determining means 4-3 is
Management setting value T calculated from equation (1) _setThe actual temperature set value
T_setROutput as This actual temperature set value T_setRIs air conditioning
Machine controller 3. Air conditioner controller 3
Sets the temperature Ta in the air-conditioning zone 1 to the upper controller.
Actual temperature set value T from 4_setRAir conditioning to match
The operation of the machine 2 is controlled.

Here, when the occupant-side temperature set value T _ocu is changed, the temperature set value determination means 4-3 changes the actual temperature set value T _setR from the management set value T _set to the occupant-side temperature set value T.
Change to _ocu (point t1 shown in FIG. 6). For example, during heating,
If the occupant feels cold and raises the _occupant- side temperature set value _Tocu , the increased occupant-side temperature set value _Tocu becomes the actual temperature set value _TsetR . Thus, the operation of the air conditioner 2 is controlled such that the room temperature Ta of the air conditioning zone 1 matches the _occupant- side temperature set value _Tocu , and the occupant's dissatisfaction can be immediately eliminated.

[0011] The temperature set value determining means 4-3 is provided by a resident.
Actual temperature set value T according to the change request of _setRThe resident side temperature
Set value T_ocuAfter a predetermined time T elapses after changing to
Actual temperature set value T_setRIs the management set value T_set(See FIG. 6
T2 point). The same applies to the resident-side temperature setting
T_ocuEach time is changed, the actual temperature set value T_setRTo T_{se t}
To T_ocu(T3, t5, t7 shown in FIG. 6)
Point), after a lapse of a predetermined time T, the actual temperature set value T_setRTo T_ocu
To T_set(Points t4, t6, and t8 shown in FIG. 6).

[0012]

Recently, there has been an increasing demand for businesses in commercial buildings (office buildings) to disclose information on efforts to reduce environmental impact. In the air conditioning system described above, the management set value T _set is determined from a plurality of viewpoints such as comfort and energy saving, and the actual temperature set value T _setR is _changed to the occupant side temperature set value T _ocu in response to a change request from the _occupant . change, since then returned to the predetermined time T has elapsed managed automatically set value after T _{the set,} so as not to excessively response to a change request from the residents, energy can be saved. However, how much energy saving has been achieved cannot be obtained as numerical data, and it is not possible to meet the information disclosure request of efforts to reduce environmental load.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. It is an object of the present invention to obtain numerical data indicating how much energy saving has been achieved, and to provide information on environmental load reduction efforts. An object of the present invention is to provide a method and an apparatus for calculating the result of energy saving effect that can respond to a disclosure request.

[0014]

According to the present invention, in order to achieve the above object, an actual temperature set value set for an air conditioning zone is changed according to a change request from a occupant. In an air conditioning system including a set value automatic reset unit that changes to a set value and returns to a management set value determined from a plurality of viewpoints after a predetermined time has elapsed, an air conditioner that supplies conditioned air to an air conditioning zone has a predetermined value. If the actual temperature set value is returned to the management set value after the lapse of a predetermined time on condition that the operating state is maintained, a predetermined value is set for each data collection cycle during the period in which the actual temperature set value is returned to the management set value. The result of the energy saving effect during one data collection cycle is calculated according to a calculation formula.

According to the present invention, when the actual temperature set value is returned to the management set value, during the period in which the actual temperature set value is returned to the management set value, one of the data collection intervals (for example, 10 minutes) is used.
The result of the energy saving effect during the data collection cycle is calculated. The calculation of the result of the energy saving effect is performed only when the air conditioner is in a predetermined operation state, and is not performed, for example, when the air conditioner is stopped or when the outside air is being cooled.

In the present invention, the actual temperature set value immediately before the actual temperature set value is returned to the control set value after the lapse of the predetermined time is set as the occupant set value before reset operation _TocuH, and each of the actual temperature set values after the reset to the control set value is performed. When the actual temperature set value in the data collection cycle is set to the actual temperature set value _TsetR after the reset operation, a predetermined constant is α, and the actual energy saving effect during the data collection cycle is Ei, the actual energy saving effect Ei is as follows. It is determined by the equation (2). Cooling period: Ei = (T _setR −T _ocuH ) × α (2) Heating period: Ei = (T _ocuH −T _setR ) × α (2) In this equation (2) The predetermined constant α is the product of the outside air flow rate (constant value), the specific heat (constant), and the specific gravity (constant).

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an example of an air conditioning system used for implementing the energy saving result calculation method according to the present invention. 5, the same reference numerals as those in FIG. 5 denote the same or equivalent components, and a description thereof will be omitted.

In this embodiment, the host controller 4 'includes, for example, a comfortable temperature set value calculating means 4-1 shown in FIG. 5, an energy saving temperature set value calculated means 4-2, and a temperature set value determining means 4-3. Set value determination means 4- which is equivalent means
In addition to 0, an air conditioner operation state monitoring means 4-4, a preset value storage means 4-5 before reset operation, and a set value automatic reset operation information generating means 4-6 are provided.

The air conditioner operating state monitoring means 4-4 monitors the current operating state of the air conditioner 2 based on information from the air conditioner controller 3. Set value storage means 4 before reset operation
-5, the actual temperature set value T _setR from the set value determination means 4-0 to the air conditioner controller 3 is input, and the actual temperature set value T _setR changed to the _occupant side temperature set value _Tocu is set to a predetermined time. The actual temperature set value T _setR immediately before _returning to the management set value T _set after T has elapsed is stored and held as the resident set value _TocuH before reset operation.

Automatic setting value reset operation information generating means 4
-6 is the actual temperature set value T _setR from the set value determination means 4-0 to the air conditioner controller 3; the current operation state of the air conditioner 2 from the air conditioner operation state monitoring means 4-4; Of the occupant-side temperature set value _Tocu is input, and the set-value automatic reset operation information is generated.

FIG. 2 shows how the set value automatic reset operation information generating means 4-6 generates the set value automatic reset operation information. FIG. 2A shows an air conditioner operating state monitoring means 4.
-4 is a signal indicating the current operation state of the air conditioner 2 (operation / stop information). The “H” level indicates that the air conditioner 2 is operating (not stopped), and “L”. The level indicates that the air conditioner 2 is stopped. FIG. 2B shows the actual temperature set value T _setR from the set value determining means 4-0 to the air conditioner controller 3. FIG. 2C shows the generated set value automatic reset operation information.

Automatic setting value resetting operation information generating means 4
-6 indicates the operation / stop from the air conditioner operation state monitoring means 4-4.
If the stop information is “H” level, the resident side temperature set value
T_{oc u}Is triggered by the change operation of
The information during the automatic value reset operation is set to the “L” level (FIG. 2)
(Point t1 shown in (c)). Then, the resident side temperature set value T
_ocuActual temperature set value T changed to_setRHas passed a predetermined time T
Later (point t2 shown in FIG. 2B), the management set value T_setBack to
At the time when the setting value automatic resetting operation information is set to "H".
Return to level.

Hereinafter, the same operation is repeated, and under the condition that the air conditioner 2 is not stopped, the set value automatic reset operation information indicates that the actual temperature set value T _setR is returned to the management set value T _set. Only at the “H” level. When the air conditioner 2 is stopped, the set value automatic resetting operation information generating means 4-6 sets the set value regardless of whether the actual temperature set value T _setR is returned to the management set value T _set. The information during the automatic reset operation is set to the “L” level.

On the other hand, a data management device 5 'is provided on the side of the central monitoring device 5, and the data management device 5' is provided with an energy saving effect performance calculation means 5-1. In this embodiment, the data management device 5 'is provided separately from the central management device 5, but may be provided integrally with the central management device 5. The energy saving effect calculation means 5-1 periodically collects various information from the host controller 4 'and calculates the result of the energy saving effect. Hereinafter, the characteristic operation performed by the energy saving effect result calculation means 5-1 will be described with reference to the flowchart shown in FIG.

[Information collection] Energy saving effect actual calculation means 5
For example, -1 collects various information from the higher-order controller 4 ′ at a cycle of 10 minutes. That is, one data collection cycle is set to, for example, 10 minutes, and various types of information are collected from the upper controller 4 ′. In this case, as the various kinds of information, the set value automatic reset operation information generation means 4-6 in the set value automatic reset operation information generation means 4-6, the air conditioner operation state monitoring means 4
-4, the operating state of the air conditioner 2 monitored (information on whether outside air is being cooled (information on outside air cooling)), the actual temperature set value from the set value determining means 4-0 to the air conditioner controller 3 T
_{setR acquires} the resident set value before reset operation _TocuH stored and held by the set value before reset operation storage means 4-5 (steps 301 to 304).

Then, based on the acquired information, it is checked whether or not the air conditioner 2 is cooling the outside air (step 305). Prepare for. If the outside air cooling is not being performed, it is checked whether or not the set value automatic reset in-operation information is at the "H" level (step 306). Prepare. If the set value automatic reset operation in progress information is at the “H” level, the process proceeds to step 307 to calculate the result Ei of the energy saving effect.

The manner in which the result Ei of the energy saving effect is calculated will be described with reference to the time chart shown in FIG.
FIGS. 4 (a), (b), and (c) show FIGS. 2 (a), (b),
It corresponds to the time chart of (c). FIG. 4D shows outside air cooling information in the air conditioner operation state monitoring means 4-4. The "L" level indicates that the outside air is not being cooled (outside air cooling is OFF), and the "H" level indicates that the outside air is being cooled. (Air cooling ON). FIG. _4E shows the _occupant set value before reset operation _TocuH stored and held in the set value before reset operation storage means 4-5, and FIG. The data collection cycle is shown.

During the period from the point t1 to the point t2 shown in FIG. 4, the outside air cooling information is at the “L” level (outside air OFF), but the set value automatic reset operation information is at the “L” level. Therefore, according to NO in step 306, step 3
Returning to 01, the calculation of the result Ei of the energy saving effect in step 307 is not performed.

After the point t2 shown in FIG. 4, the actual temperature set value T _setR, which has been set as the occupant-side temperature set value T _ocu , _returns to the management set value T _set , and the set value automatic reset operation information becomes “H”. Level. At this time, the resident-side temperature set value T _ocu immediately before returning to the management set value T _set is stored in the pre-reset operation set value storage means 4-5.
_Stored and retained as _ocuH .

In the first data collection cycle after the point t2, the energy saving effect actual calculation means 5-1 receives information from the _host controller 4 'during the set value automatic reset operation, outside air cooling information, and the actual temperature set value T _setR ( Hereinafter, the actual temperature set value T _setR at this time is referred to as the actual temperature set value after the reset operation), and the occupant set value _TocuH before the reset operation is acquired (step 30).
1-304). Then, it is confirmed that the outside air cooling information is at the “L” level and the set value automatic reset operation information is at the “H” level (NO in step 305, YES in step 306). An operation is performed (step 307).

[Calculation of Energy Saving Effect Performance Ei] In step 307, the energy saving effect performance calculating means 5-1
Uses the following equation (3) as an equation for calculating the result Ei of the energy saving effect. Cooling period: Ei = (T _setR −T _ocuH ) × C1 × C2 × C3 (3) Heating period: Ei = (T _ocuH −T _setR ) × C1 × C2 × C3 (3)

In the equation (3), T _setR is the actual temperature set value after the reset operation obtained in step 301,
_TocuH is the occupant set value before the reset operation acquired in step 304, C1 is the outside air volume (constant value), C2 is the specific heat (constant), and C3 is the specific gravity (constant).

The outside air flow rate C1 is an approximate value of the outside air flow rate (a constant value that can be arbitrarily set for each air conditioner) taken in during a data collection cycle (calculation cycle), and is determined based on air flow rate measurement data at the time of construction. Is set in the energy-saving-effect-result calculating means 5-1. In the present embodiment, since the calculation cycle is 10 minutes, it is determined as the outside air volume to be taken in for 10 minutes. The specific heat C2 and the specific gravity C3 are constants. In the present embodiment, the specific heat C2 is set to 1.00 KJ / (kg · ° C.), and the specific gravity C3 is set to 1.17 kg / m ³ . C1, C2, C3
Is a constant, the outside air volume C1, the specific heat C2, and the specific gravity C3
And a constant α (α = C1 × C2 × C3), and this α is set to (T _setR −T _ocuH ) or (T _ocuH −
_TsetR ) may be multiplied to obtain the result Ei of the energy saving effect.

Thus, 10 minutes is defined as one calculation cycle, and the result Ei of the energy saving effect during this one calculation cycle is calculated. The energy-saving effect calculation means 5-1 stores the calculated energy-saving effect Ei for one calculation cycle (one data collection cycle) (step 308) and step 30.
Return to step 1 to prepare for the next data collection cycle. In the same manner, the energy-saving-effect-result calculating means 5-1 calculates the energy-saving effect results Ei during one data collection cycle every one data collection cycle (10 minutes), and stores them one after another.

As can be seen from the above description, the present embodiment
According to the state, even when the air conditioner 2 is not stopped and the outside air is being cooled.
The actual temperature set value T_setRIs the management setting
T_{se t}Is returned to the management setting value T_setReturned to
Data collection cycle, one data collection cycle
The result Ei of the energy saving effect during the collection cycle is calculated and stored.
Going to be preserved. This saves energy for each data collection cycle.
By integrating the results Ei of the energy effect, for example,
Actual value of energy saving effect every day and energy saving every month
It is possible to obtain the actual value of the rugi effect,
Convert the actual value of the energy saving effect obtained in
Response to information disclosure requests for environmental impact reduction efforts
Will be able to

For example, the actual value of the energy saving effect obtained by integrating the actual result Ei of the energy saving effect can be used for evaluation of the energy saving method based on the ratio to the amount of energy actually consumed. In addition, the actual value of the energy-saving effect obtained by integrating the energy-saving effect results Ei is converted into a monetary value based on the unit price of the chilled and heated water, and compared with the cost invested in this energy-saving method. It can be used for evaluation in terms of aspects. These physical evaluations and monetary evaluations are positioned as important factors also as external disclosure information such as environmental reports.

[0037]

As is apparent from the above description, according to the present invention, the actual temperature set value is controlled on condition that the air conditioner for supplying conditioned air to the air conditioning zone is in a predetermined operating state. When the setting value is returned to the set value, one data collection period (for example, 10
For each minute), the result of the energy saving effect during one data collection cycle is calculated, and by accumulating the result of the energy saving effect for each data collection cycle, numerical data is obtained as to how much energy saving was achieved. As a result, it becomes possible to respond to the information disclosure request of the environmental load reduction effort.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an example of an air conditioning system used for implementing an energy saving result calculation method according to the present invention.

FIG. 2 is a time chart illustrating a generation state of information during a setting value automatic reset operation.

FIG. 3 is a flowchart for explaining a characteristic operation of the energy saving effect result calculation means.

FIG. 4 is a time chart for explaining how the results of the energy saving effect are calculated.

FIG. 5 is a diagram schematically showing a conventional air conditioning system disclosed in Japanese Patent Application Laid-Open No. Hei 6-331198.

FIG. 6 shows an actual temperature set value T in the air conditioning system.
₆ is a time chart showing changes in _setR .

[Description of Signs] 1 ... air conditioning zone, 2 ... air conditioner, 3 ... air conditioner controller, 4 '... host controller, 4-0 ... set value determination means, 4-4 ... air conditioner operation state monitoring means, 4-5 ... set value storage means before reset operation 4-6 ... set value automatic reset operation information generation means 5 ... central monitoring device 5 '... data management device 5-1 ... energy saving effect calculation means 6 ... user terminal , 7 ... temperature sensor.

Claims (5)

[Claims] 1. An actual temperature set value set for an air conditioning zone is changed to a resident side temperature set value in response to a change request from a resident, and is determined from a plurality of viewpoints after a lapse of a predetermined time. An air-conditioning system comprising a set value automatic resetting means for returning to a control set value, wherein the actual temperature set value is a predetermined value on condition that an air conditioner for supplying conditioned air to the air conditioning zone is in a predetermined operation state. If the setting is returned to the management setting after a lapse of time, during the period of returning to the management setting, every one data collection cycle,
A method for calculating an energy saving effect result, wherein the result of the energy saving effect during one data collection cycle is calculated according to a predetermined calculation formula. 2. The method according to claim 1, wherein the predetermined operation state is that the air conditioner is not stopped and the operation mode of the air conditioner is not in outside air cooling. 3. The occupant set value T _ocuH before reset operation, wherein the actual temperature set value immediately before the actual temperature set value is returned to the control set value after a predetermined time has elapsed is returned to the control set value. When the actual temperature set value in each data collection cycle after the resetting is set as the actual temperature set value T _setR after the reset operation, the predetermined constant is α, and the result of the energy saving effect during the data collection cycle is Ei, Is the following equation. Cooling period: Ei = (T _setR −T _ocuH ) × α Heating period: Ei = (T _ocuH −T _setR ) × α 4. The method according to claim 3, wherein the predetermined constant α
Is the product of the outside air volume determined as a constant value and the specific heat defined as a constant, as well as the specific gravity defined as a constant. 5. An actual temperature set value set for an air-conditioning zone is changed to a resident-side temperature set value in response to a change request from a resident, and is determined from a plurality of viewpoints after a lapse of a predetermined time. A setting value automatic resetting means for returning to a management setting value, and an air conditioner for supplying conditioned air to the air conditioning zone is in a predetermined operation state, and the actual temperature setting value is set to a management setting after a predetermined time elapses. When the value is returned to the value, during the period in which the value is returned to the management setting value, every one data collection cycle,
An energy saving effect calculation device for calculating the result of the energy saving effect during one data collection cycle according to a predetermined calculation formula.